RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy17820
(210 letters)
>gnl|CDD|241283 cd01252, PH_GRP1-like, General Receptor for
Phosphoinositides-1-like Pleckstrin homology (PH)
domain. GRP1/cytohesin3 and the related proteins ARNO
(ARF nucleotide-binding site opener)/cytohesin-2 and
cytohesin-1 are ARF exchange factors that contain a
pleckstrin homology (PH) domain thought to target these
proteins to cell membranes through binding
polyphosphoinositides. The PH domains of all three
proteins exhibit relatively high affinity for
PtdIns(3,4,5)P3. Within the Grp1 family, diglycine (2G)
and triglycine (3G) splice variants, differing only in
the number of glycine residues in the PH domain,
strongly influence the affinity and specificity for
phosphoinositides. The 2G variants selectively bind
PtdIns(3,4,5)P3 with high affinity,the 3G variants bind
PtdIns(3,4,5)P3 with about 30-fold lower affinity and
require the polybasic region for plasma membrane
targeting. These ARF-GEFs share a common, tripartite
structure consisting of an N-terminal coiled-coil
domain, a central domain with homology to the yeast
protein Sec7, a PH domain, and a C-terminal polybasic
region. The Sec7 domain is autoinhibited by conserved
elements proximal to the PH domain. GRP1 binds to the
DNA binding domain of certain nuclear receptors
(TRalpha, TRbeta, AR, ER, but not RXR), and can repress
thyroid hormone receptor (TR)-mediated transactivation
by decreasing TR-complex formation on thyroid hormone
response elements. ARNO promotes sequential activation
of Arf6, Cdc42 and Rac1 and insulin secretion. Cytohesin
acts as a PI 3-kinase effector mediating biological
responses including cell spreading and adhesion,
chemotaxis, protein trafficking, and cytoskeletal
rearrangements, only some of which appear to depend on
their ability to activate ARFs. PH domains have diverse
functions, but in general are involved in targeting
proteins to the appropriate cellular location or in the
interaction with a binding partner. They share little
sequence conservation, but all have a common fold, which
is electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 118
Score = 222 bits (569), Expect = 1e-75
Identities = 86/111 (77%), Positives = 93/111 (83%)
Query: 97 FNPDKEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVHDRH 156
FNPD+EGWL K GGR KSWKRRWFIL D CLYYFEYTTDKEPRGIIPLEN+ VREV D
Sbjct: 1 FNPDREGWLLKLGGRVKSWKRRWFILTDNCLYYFEYTTDKEPRGIIPLENLSVREVEDSK 60
Query: 157 KPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCL 207
KP CFEL++ E IKACKTDS+GKVVEG HTVYR+SAAT EE DEWIK +
Sbjct: 61 KPFCFELYSPSNEVIKACKTDSDGKVVEGNHTVYRISAATEEEMDEWIKSI 111
Score = 97.4 bits (243), Expect = 3e-26
Identities = 34/40 (85%), Positives = 35/40 (87%)
Query: 5 FNPDKEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDK 44
FNPD+EGWL K GGR KSWKRRWFIL D CLYYFEYTTDK
Sbjct: 1 FNPDREGWLLKLGGRVKSWKRRWFILTDNCLYYFEYTTDK 40
>gnl|CDD|241442 cd13288, PH_Ses, Sesquipedalian family Pleckstrin homology (PH)
domain. The sesquipedalian family has 2 mammalian
members: Ses1 and Ses2, which are also callled 7 kDa
inositol polyphosphate phosphatase-interacting protein 1
and 2. They play a role in endocytic trafficking and are
required for receptor recycling from endosomes, both to
the trans-Golgi network and the plasma membrane. Members
of this family form homodimers and heterodimers.
Sesquipedalian interacts with inositol polyphosphate
5-phosphatase OCRL-1 (INPP5F) also known as Lowe
oculocerebrorenal syndrome protein, a phosphatase enzyme
that is involved in actin polymerization and is found in
the trans-Golgi network and INPP5B. Sesquipedalian
contains a single PH domain. PH domains have diverse
functions, but in general are involved in targeting
proteins to the appropriate cellular location or in the
interaction with a binding partner. They share little
sequence conservation, but all have a common fold, which
is electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 120
Score = 90.0 bits (224), Expect = 2e-23
Identities = 37/111 (33%), Positives = 54/111 (48%), Gaps = 18/111 (16%)
Query: 98 NPDKEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVHDRHK 157
DKEG+LWK+G R S+++RWF+L L+YFE D+EP G+I LE V D
Sbjct: 7 PVDKEGYLWKKGERNTSYQKRWFVLKGNLLFYFEKKGDREPLGVIVLEGCTVELSEDEE- 65
Query: 158 PHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCLS 208
P+ F + G Y ++A + E+ + W+K LS
Sbjct: 66 PYAFAIRFDG-----------------PGSRSYVLAAESQEDMESWMKALS 99
Score = 56.9 bits (138), Expect = 7e-11
Identities = 19/39 (48%), Positives = 27/39 (69%)
Query: 6 NPDKEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDK 44
DKEG+LWK+G R S+++RWF+L L+YFE D+
Sbjct: 7 PVDKEGYLWKKGERNTSYQKRWFVLKGNLLFYFEKKGDR 45
>gnl|CDD|241430 cd13276, PH_AtPH1, Arabidopsis thaliana Pleckstrin homolog (PH) 1
(AtPH1) PH domain. AtPH1 is expressed in all plant
tissue and is proposed to be the plant homolog of human
pleckstrin. Pleckstrin consists of two PH domains
separated by a linker region, while AtPH has a single PH
domain with a short N-terminal extension. AtPH1 binds
PtdIns3P specifically and is thought to be an adaptor
molecule since it has no obvious catalytic functions. PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 117
Score = 80.5 bits (199), Expect = 9e-20
Identities = 36/113 (31%), Positives = 54/113 (47%), Gaps = 23/113 (20%)
Query: 98 NPDKEGWLWKQGGRYKSWKRRWFILNDKCLYYF-EYTTDKEPRGIIPLENIQVREVHDRH 156
+P+K GWL KQGG K+W+RRWF+L L+YF + D EPRG+I L + + +
Sbjct: 6 DPEKAGWLTKQGGSIKTWRRRWFVLKQGKLFYFKDEDPDSEPRGVIDLSDCLTVKSAEEA 65
Query: 157 --KPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCL 207
K FE+ T + + A + +EK+EWI +
Sbjct: 66 TNKEFAFEVSTP--------------------ERTFYLIADSEKEKEEWISAI 98
Score = 57.8 bits (140), Expect = 4e-11
Identities = 19/33 (57%), Positives = 25/33 (75%)
Query: 6 NPDKEGWLWKQGGRYKSWKRRWFILNDKCLYYF 38
+P+K GWL KQGG K+W+RRWF+L L+YF
Sbjct: 6 DPEKAGWLTKQGGSIKTWRRRWFVLKQGKLFYF 38
>gnl|CDD|241402 cd13248, PH_PEPP1_2_3, Phosphoinositol 3-phosphate binding proteins
1, 2, and 3 pleckstrin homology (PH) domain. PEPP1
(also called PLEKHA4/PH domain-containing family A
member 4 and RHOXF1/Rhox homeobox family member 1), and
related homologs PEPP2 (also called PLEKHA5/PH
domain-containing family A member 5) and PEPP3 (also
called PLEKHA6/PH domain-containing family A member 6),
have PH domains that interact specifically with
PtdIns(3,4)P3. Other proteins that bind PtdIns(3,4)P3
specifically are: TAPP1 (tandem PH-domain-containing
protein-1) and TAPP2], PtdIns3P AtPH1, and Ptd-
Ins(3,5)P2 (centaurin-beta2). All of these proteins
contain at least 5 of the 6 conserved amino acids that
make up the putative phosphatidylinositol 3,4,5-
trisphosphate-binding motif (PPBM) located at their
N-terminus. PH domains have diverse functions, but in
general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 104
Score = 71.5 bits (176), Expect = 1e-16
Identities = 37/116 (31%), Positives = 54/116 (46%), Gaps = 23/116 (19%)
Query: 98 NPDKEGWLWKQGG-RYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVH--- 153
GWL KQGG K+WK+RWF+L D CLYY++ +++ G I L + +
Sbjct: 6 PVVFSGWLHKQGGSGLKNWKKRWFVLKDNCLYYYKDPEEEKALGSILLPSYTISPASPSD 65
Query: 154 DRHKPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCLSL 209
+ ++ F KA G T Y +A T EE ++W+K LSL
Sbjct: 66 EINRKFAF----------KAEH--------AGMRT-YYFAADTQEEMEQWMKALSL 102
Score = 56.9 bits (138), Expect = 5e-11
Identities = 19/34 (55%), Positives = 23/34 (67%), Gaps = 1/34 (2%)
Query: 6 NPDKEGWLWKQGG-RYKSWKRRWFILNDKCLYYF 38
GWL KQGG K+WK+RWF+L D CLYY+
Sbjct: 6 PVVFSGWLHKQGGSGLKNWKKRWFVLKDNCLYYY 39
>gnl|CDD|215766 pfam00169, PH, PH domain. PH stands for pleckstrin homology.
Length = 101
Score = 68.6 bits (168), Expect = 2e-15
Identities = 37/113 (32%), Positives = 55/113 (48%), Gaps = 25/113 (22%)
Query: 101 KEGWLWKQGGRY-KSWKRRWFILNDKCLYYFEY--TTDKEPRGIIPLENIQVREVHD--- 154
KEGWL K+G KSWK+R+F+L D L Y++ + P+G IPL QV +V D
Sbjct: 3 KEGWLLKKGSGGRKSWKKRYFVLFDGVLLYYKDSKKSSSRPKGSIPLSGCQVTKVPDSED 62
Query: 155 RHKPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCL 207
+ +CFE+ T G + + A + EE+ EW+K +
Sbjct: 63 GKRKNCFEIRT-------------------GDRETFLLQAESEEERKEWVKAI 96
Score = 42.8 bits (101), Expect = 7e-06
Identities = 18/39 (46%), Positives = 26/39 (66%), Gaps = 1/39 (2%)
Query: 9 KEGWLWKQGGRY-KSWKRRWFILNDKCLYYFEYTTDKSA 46
KEGWL K+G KSWK+R+F+L D L Y++ + S+
Sbjct: 3 KEGWLLKKGSGGRKSWKKRYFVLFDGVLLYYKDSKKSSS 41
Score = 34.8 bits (80), Expect = 0.007
Identities = 14/40 (35%), Positives = 23/40 (57%)
Query: 44 KSACLIENSSGRYKSWKRRWFILNDKCLYYFEYTTDKPFK 83
K L++ SG KSWK+R+F+L D L Y++ + +
Sbjct: 3 KEGWLLKKGSGGRKSWKKRYFVLFDGVLLYYKDSKKSSSR 42
>gnl|CDD|214574 smart00233, PH, Pleckstrin homology domain. Domain commonly found
in eukaryotic signalling proteins. The domain family
possesses multiple functions including the abilities to
bind inositol phosphates, and various proteins. PH
domains have been found to possess inserted domains
(such as in PLC gamma, syntrophins) and to be inserted
within other domains. Mutations in Brutons tyrosine
kinase (Btk) within its PH domain cause X-linked
agammaglobulinaemia (XLA) in patients. Point mutations
cluster into the positively charged end of the molecule
around the predicted binding site for
phosphatidylinositol lipids.
Length = 102
Score = 68.7 bits (168), Expect = 2e-15
Identities = 36/116 (31%), Positives = 54/116 (46%), Gaps = 26/116 (22%)
Query: 99 PDKEGWLWKQGGRY-KSWKRRWFILNDKCLYYFE---YTTDKEPRGIIPLENIQVREVHD 154
KEGWL+K+ G KSWK+R+F+L + L Y++ +P+G I L VRE D
Sbjct: 1 VIKEGWLYKKSGGGKKSWKKRYFVLFNSTLLYYKSKKDKKSYKPKGSIDLSGCTVREAPD 60
Query: 155 R---HKPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCL 207
KPHCFE+ T + A + EE+++W++ L
Sbjct: 61 PDSSKKPHCFEIKT-------------------SDRKTLLLQAESEEEREKWVEAL 97
Score = 40.2 bits (94), Expect = 8e-05
Identities = 16/34 (47%), Positives = 24/34 (70%), Gaps = 1/34 (2%)
Query: 7 PDKEGWLWKQGGRY-KSWKRRWFILNDKCLYYFE 39
KEGWL+K+ G KSWK+R+F+L + L Y++
Sbjct: 1 VIKEGWLYKKSGGGKKSWKKRYFVLFNSTLLYYK 34
>gnl|CDD|241417 cd13263, PH_RhoGap25-like, Rho GTPase activating protein 25 and
related proteins Pleckstrin homology (PH) domain.
RhoGAP25 (also called ArhGap25) like other RhoGaps are
involved in cell polarity, cell morphology and
cytoskeletal organization. They act as GTPase activators
for the Rac-type GTPases by converting them to an
inactive GDP-bound state and control actin remodeling by
inactivating Rac downstream of Rho leading to suppress
leading edge protrusion and promotes cell retraction to
achieve cellular polarity and are able to suppress RAC1
and CDC42 activity in vitro. Overexpression of these
proteins induces cell rounding with partial or complete
disruption of actin stress fibers and formation of
membrane ruffles, lamellipodia, and filopodia. This
hierarchy contains RhoGAP22, RhoGAP24, and RhoGAP25.
Members here contain an N-terminal PH domain followed by
a RhoGAP domain and either a BAR or TATA Binding Protein
(TBP) Associated Factor 4 (TAF4) domain. PH domains have
diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They share
little sequence conservation, but all have a common
fold, which is electrostatically polarized. Less than
10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 114
Score = 67.4 bits (165), Expect = 7e-15
Identities = 38/107 (35%), Positives = 52/107 (48%), Gaps = 8/107 (7%)
Query: 99 PDKEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVHDRHKP 158
K GWL KQGG K+W+RRWF+L LYY++ + +P+G IPL V+E+ P
Sbjct: 3 VIKSGWLKKQGGIVKNWQRRWFVLRGDQLYYYKDEDESKPQGCIPLPGNTVKELPF--NP 60
Query: 159 HCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIK 205
F FE I G H Y + A + E +EW+K
Sbjct: 61 EEPGKFL--FEIIPG----DGGTRRSANHDSYLLMANSQAEMEEWVK 101
Score = 45.8 bits (109), Expect = 7e-07
Identities = 18/32 (56%), Positives = 22/32 (68%)
Query: 7 PDKEGWLWKQGGRYKSWKRRWFILNDKCLYYF 38
K GWL KQGG K+W+RRWF+L LYY+
Sbjct: 3 VIKSGWLKKQGGIVKNWQRRWFVLRGDQLYYY 34
Score = 31.2 bits (71), Expect = 0.15
Identities = 11/22 (50%), Positives = 15/22 (68%)
Query: 53 SGRYKSWKRRWFILNDKCLYYF 74
G K+W+RRWF+L LYY+
Sbjct: 13 GGIVKNWQRRWFVLRGDQLYYY 34
>gnl|CDD|241231 cd00821, PH, Pleckstrin homology (PH) domain. PH domains have
diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They share
little sequence conservation, but all have a common
fold, which is electrostatically polarized. Less than
10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 92
Score = 66.6 bits (162), Expect = 1e-14
Identities = 41/110 (37%), Positives = 60/110 (54%), Gaps = 22/110 (20%)
Query: 101 KEGWLWKQGGRY-KSWKRRWFILNDKCLYYFEYTTD--KEPRGIIPLE-NIQVREVHDRH 156
KEGWL K+GG+ KSWK+RWF+L D L Y++ D K+P+G+IPL ++V V
Sbjct: 1 KEGWLKKRGGKGLKSWKKRWFVLFDDVLLYYKSKKDSSKKPKGLIPLSDGLEVELVSSSG 60
Query: 157 KPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKC 206
KP+CFEL T + Y + A + EE++EW++
Sbjct: 61 KPNCFELVTP------------------DRGRTYYLQAESEEEREEWLEA 92
Score = 45.0 bits (106), Expect = 1e-06
Identities = 21/38 (55%), Positives = 27/38 (71%), Gaps = 1/38 (2%)
Query: 9 KEGWLWKQGGRY-KSWKRRWFILNDKCLYYFEYTTDKS 45
KEGWL K+GG+ KSWK+RWF+L D L Y++ D S
Sbjct: 1 KEGWLKKRGGKGLKSWKKRWFVLFDDVLLYYKSKKDSS 38
Score = 36.6 bits (84), Expect = 0.001
Identities = 14/36 (38%), Positives = 19/36 (52%)
Query: 48 LIENSSGRYKSWKRRWFILNDKCLYYFEYTTDKPFK 83
L + KSWK+RWF+L D L Y++ D K
Sbjct: 5 LKKRGGKGLKSWKKRWFVLFDDVLLYYKSKKDSSKK 40
>gnl|CDD|241425 cd13271, PH2_TAPP1_2, Tandem PH-domain-containing proteins 1 and 2
Pleckstrin homology (PH) domain, C-terminal repeat. The
binding of TAPP1 (also called PLEKHA1/pleckstrin
homology domain containing, family A (phosphoinositide
binding specific) member 1) and TAPP2 (also called
PLEKHA2) adaptors to PtdIns(3,4)P(2), but not PI(3,4,
5)P3, function as negative regulators of insulin and
PI3K signalling pathways (i.e. TAPP/utrophin/syntrophin
complex). TAPP1 and TAPP2 contain two sequential PH
domains in which the C-terminal PH domain specifically
binds PtdIns(3,4)P2 with high affinity. The N-terminal
PH domain does not interact with any phosphoinositide
tested. They also contain a C-terminal PDZ-binding motif
that interacts with several PDZ-binding proteins,
including PTPN13 (known previously as PTPL1 or FAP-1) as
well as the scaffolding proteins MUPP1 (multiple
PDZ-domain-containing protein 1), syntrophin and
utrophin. PH domains have diverse functions, but in
general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 114
Score = 64.7 bits (158), Expect = 9e-14
Identities = 31/82 (37%), Positives = 43/82 (52%), Gaps = 14/82 (17%)
Query: 98 NPDKEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVHDRHK 157
N K G+ KQG K+WKRR+FIL+D + Y++ TDKEP IPL +EV H+
Sbjct: 7 NVIKSGYCVKQGAVRKNWKRRYFILDDNTISYYKSETDKEPLRTIPL-----KEVLKVHE 61
Query: 158 ---------PHCFELFTSGFEF 170
+ FE+ T+ F
Sbjct: 62 CLSGDLLMRDNLFEIITTSRTF 83
Score = 51.6 bits (124), Expect = 7e-09
Identities = 19/41 (46%), Positives = 26/41 (63%)
Query: 6 NPDKEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKSA 46
N K G+ KQG K+WKRR+FIL+D + Y++ TDK
Sbjct: 7 NVIKSGYCVKQGAVRKNWKRRYFILDDNTISYYKSETDKEP 47
Score = 35.4 bits (82), Expect = 0.004
Identities = 13/24 (54%), Positives = 19/24 (79%)
Query: 57 KSWKRRWFILNDKCLYYFEYTTDK 80
K+WKRR+FIL+D + Y++ TDK
Sbjct: 22 KNWKRRYFILDDNTISYYKSETDK 45
>gnl|CDD|241414 cd13260, PH_RASA1, RAS p21 protein activator (GTPase activating
protein) 1 Pleckstrin homology (PH) domain. RASA1 (also
called RasGap1 or p120) is a member of the RasGAP family
of GTPase-activating proteins. RASA1 contains N-terminal
SH2-SH3-SH2 domains, followed by two C2 domains, a PH
domain, a RasGAP domain, and a BTK domain. Splice
variants lack the N-terminal domains. It is a cytosolic
vertebrate protein that acts as a suppressor of RAS via
its C-terminal GAP domain function, enhancing the weak
intrinsic GTPase activity of RAS proteins resulting in
the inactive GDP-bound form of RAS, allowing control of
cellular proliferation and differentiation.
Additionally, it is involved in mitogenic signal
transmission towards downstream interacting partners
through its N-terminal SH2-SH3-SH2 domains. RASA1
interacts with a number of proteins including: G3BP1,
SOCS3, ANXA6, Huntingtin, KHDRBS1, Src, EPHB3, EPH
receptor B2, Insulin-like growth factor 1 receptor,
PTK2B, DOK1, PDGFRB, HCK, Caveolin 2, DNAJA3, HRAS,
GNB2L1 and NCK1. PH domains have diverse functions, but
in general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 103
Score = 63.5 bits (155), Expect = 2e-13
Identities = 34/116 (29%), Positives = 55/116 (47%), Gaps = 20/116 (17%)
Query: 97 FNPDKEGWLWKQGGRYKSWKRRWFILN--DKCLYYFEYTTDKEPRGIIPLENIQVREVHD 154
K+G+L K+ G+ K WK +F+L ++ LY+FE +P+G+I L V VHD
Sbjct: 1 KGIVKKGYLLKKSGKNKKWKNLYFVLEGAEQHLYFFENEKRTKPKGLIDLSYSSVYPVHD 60
Query: 155 RH--KPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCLS 208
+P+CF++ + T+Y + A TAE +W+K L
Sbjct: 61 SLFGRPNCFQIVVRAL----------------NESTIYYLCADTAELAQDWMKALR 100
Score = 37.3 bits (87), Expect = 9e-04
Identities = 14/37 (37%), Positives = 23/37 (62%), Gaps = 2/37 (5%)
Query: 5 FNPDKEGWLWKQGGRYKSWKRRWFILN--DKCLYYFE 39
K+G+L K+ G+ K WK +F+L ++ LY+FE
Sbjct: 1 KGIVKKGYLLKKSGKNKKWKNLYFVLEGAEQHLYFFE 37
>gnl|CDD|241268 cd01235, PH_Sbf1_hMTMR5, Set binding factor 1 (also called Human
MTMR5) Pleckstrin Homology (PH) domain. Sbf1 is a
myotubularin-related pseudo-phosphatase. Both Sbf1 and
myotubularin interact with the SET domains of Hrx and
other epigenetic regulatory proteins, but Sbf1 lacks
phosphatase activity due to several amino acid changes
in its structurally preserved catalytic pocket. It
contains pleckstrin (PH), GEF, and myotubularin homology
domains that are thought to be responsible for signaling
and growth control. Sbf1 functions as an inhibitor of
cellular growth. The N-terminal GEF homology domain
serves to inhibit the transforming effects of Sbf1. PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 106
Score = 62.3 bits (152), Expect = 5e-13
Identities = 31/113 (27%), Positives = 46/113 (40%), Gaps = 30/113 (26%)
Query: 102 EGWLWKQGGRYKSWKRRWFIL--NDKCLYYFEYTTDKEPRGIIPLENIQ-VREVHDRHKP 158
EG+L+K+G K WK+RWF+L L Y+E D + +G+I L+ ++ V
Sbjct: 6 EGYLYKRGALLKGWKQRWFVLDLTKHQLRYYESKEDTKCKGVIDLQEVESVYPDTPSIGA 65
Query: 159 H-------CFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWI 204
FEL T+ VY A +AE +WI
Sbjct: 66 PKSPDPGAFFELKTNK--------------------RVYYFLAPSAEAAQQWI 98
Score = 46.9 bits (112), Expect = 3e-07
Identities = 16/40 (40%), Positives = 22/40 (55%), Gaps = 2/40 (5%)
Query: 10 EGWLWKQGGRYKSWKRRWFIL--NDKCLYYFEYTTDKSAC 47
EG+L+K+G K WK+RWF+L L Y+E D
Sbjct: 6 EGYLYKRGALLKGWKQRWFVLDLTKHQLRYYESKEDTKCK 45
Score = 30.0 bits (68), Expect = 0.27
Identities = 12/32 (37%), Positives = 15/32 (46%), Gaps = 2/32 (6%)
Query: 54 GRYKSWKRRWFIL--NDKCLYYFEYTTDKPFK 83
K WK+RWF+L L Y+E D K
Sbjct: 14 ALLKGWKQRWFVLDLTKHQLRYYESKEDTKCK 45
>gnl|CDD|241309 cd10573, PH_DAPP1, Dual Adaptor for Phosphotyrosine and
3-Phosphoinositides Pleckstrin homology (PH) domain.
DAPP1 (also known as PHISH/3'
phosphoinositide-interacting SH2 domain-containing
protein or Bam32) plays a role in B-cell activation and
has potential roles in T-cell and mast cell function.
DAPP1 promotes B cell receptor (BCR) induced activation
of Rho GTPases Rac1 and Cdc42, which feed into
mitogen-activated protein kinases (MAPK) activation
pathways and affect cytoskeletal rearrangement. DAPP1can
also regulate BCR-induced activation of extracellular
signal-regulated kinase (ERK), and c-jun NH2-terminal
kinase (JNK). DAPP1 contains an N-terminal SH2 domain
and a C-terminal pleckstrin homology (PH) domain with a
single tyrosine phosphorylation site located centrally.
DAPP1 binds strongly to both PtdIns(3,4,5)P3 and
PtdIns(3,4)P2. The PH domain is essential for plasma
membrane recruitment of PI3K upon cell activation. PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 96
Score = 60.4 bits (147), Expect = 2e-12
Identities = 39/109 (35%), Positives = 51/109 (46%), Gaps = 21/109 (19%)
Query: 101 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPL-ENIQVREVHDRHKPH 159
KEG+L KQGG K+WK RWF+L L YF+ TD +P + L E V+ + + KP+
Sbjct: 5 KEGYLTKQGGIVKNWKTRWFVLRKNELKYFKTRTDTKPIRTLDLTECSSVQADYSQGKPN 64
Query: 160 CFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCLS 208
CF L + M A T EE DEW+K L
Sbjct: 65 CFRLVFPD--------------------RTFYMYAKTEEEADEWVKLLK 93
Score = 42.7 bits (101), Expect = 8e-06
Identities = 20/36 (55%), Positives = 24/36 (66%)
Query: 9 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDK 44
KEG+L KQGG K+WK RWF+L L YF+ TD
Sbjct: 5 KEGYLTKQGGIVKNWKTRWFVLRKNELKYFKTRTDT 40
Score = 30.0 bits (68), Expect = 0.24
Identities = 15/32 (46%), Positives = 19/32 (59%), Gaps = 1/32 (3%)
Query: 54 GRYKSWKRRWFILNDKCLYYFEYTTD-KPFKI 84
G K+WK RWF+L L YF+ TD KP +
Sbjct: 14 GIVKNWKTRWFVLRKNELKYFKTRTDTKPIRT 45
>gnl|CDD|241436 cd13282, PH1_PLEKHH1_PLEKHH2, Pleckstrin homology (PH) domain
containing, family H (with MyTH4 domain) members 1 and 2
(PLEKHH1) PH domain, repeat 1. PLEKHH1 and PLEKHH2
(also called PLEKHH1L) are thought to function in
phospholipid binding and signal transduction. There are
3 Human PLEKHH genes: PLEKHH1, PLEKHH2, and PLEKHH3.
There are many isoforms, the longest of which contain a
FERM domain, a MyTH4 domain, two PH domains, a peroximal
domain, a vacuolar domain, and a coiled coil stretch.
The FERM domain has a cloverleaf tripart structure
(FERM_N, FERM_M, FERM_C/N, alpha-, and C-lobe/A-lobe,
B-lobe, C-lobe/F1, F2, F3). The C-lobe/F3 within the
FERM domain is part of the PH domain family. PH domains
have diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They share
little sequence conservation, but all have a common
fold, which is electrostatically polarized. Less than
10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 96
Score = 56.2 bits (136), Expect = 9e-11
Identities = 31/109 (28%), Positives = 51/109 (46%), Gaps = 24/109 (22%)
Query: 101 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTD--KEPRGIIPLENIQVREVHDRHKP 158
K G+L K GG+ K+WKRRWF+L + L+Y++ D ++P+G I L E+
Sbjct: 1 KAGYLTKLGGKVKTWKRRWFVLKNGELFYYKSPNDVIRKPQGQIAL--DGSCEIARAEGA 58
Query: 159 HCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCL 207
FE+ T + Y ++A + + DEWI+ +
Sbjct: 59 QTFEIVT--------------------EKRTYYLTADSENDLDEWIRVI 87
Score = 47.3 bits (113), Expect = 2e-07
Identities = 16/30 (53%), Positives = 23/30 (76%)
Query: 9 KEGWLWKQGGRYKSWKRRWFILNDKCLYYF 38
K G+L K GG+ K+WKRRWF+L + L+Y+
Sbjct: 1 KAGYLTKLGGKVKTWKRRWFVLKNGELFYY 30
Score = 36.1 bits (84), Expect = 0.002
Identities = 11/22 (50%), Positives = 17/22 (77%)
Query: 53 SGRYKSWKRRWFILNDKCLYYF 74
G+ K+WKRRWF+L + L+Y+
Sbjct: 9 GGKVKTWKRRWFVLKNGELFYY 30
>gnl|CDD|241456 cd13302, PH2_Pleckstrin_2, Pleckstrin 2 Pleckstrin homology (PH)
domain, repeat 2. Pleckstrin is a protein found in
platelets. This name is derived from platelet and
leukocyte C kinase substrate and the KSTR string of
amino acids. Pleckstrin 2 contains two PH domains and a
DEP (dishvelled, egl-10, and pleckstrin) domain. Unlike
pleckstrin 1, pleckstrin 2 does not contain obvious
sites of PKC phosphorylation. Pleckstrin 2 plays a role
in actin rearrangement, large lamellipodia and
peripheral ruffle formation, and may help orchestrate
cytoskeletal arrangement. The PH domains of pleckstrin 2
are thought to contribute to lamellipodia formation.
This cd contains the second PH domain repeat. PH domains
have diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They share
little sequence conservation, but all have a common
fold, which is electrostatically polarized. Less than
10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 109
Score = 56.0 bits (135), Expect = 2e-10
Identities = 37/107 (34%), Positives = 49/107 (45%), Gaps = 14/107 (13%)
Query: 101 KEGWLWKQGGRYKSWKRRWFILNDK--CLYYFEYTTDKEPRGIIPLENIQVREVHDRHKP 158
K+G L KQG R K+WK R F+L D L+Y++ ++P G I L V V D P
Sbjct: 9 KQGCLLKQGHRRKNWKVRKFVLRDDPAYLHYYDPAKGEDPLGAIHLRGCVVTAVEDNSNP 68
Query: 159 HCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIK 205
+ + FE I A Y + AAT E+ EWIK
Sbjct: 69 AKGSVEGNLFEIITA------------DEVHYYLQAATPAERTEWIK 103
Score = 34.4 bits (79), Expect = 0.009
Identities = 26/88 (29%), Positives = 40/88 (45%), Gaps = 16/88 (18%)
Query: 9 KEGWLWKQGGRYKSWKRRWFILNDK--CLYYFEYTTDKS--------ACLI----ENSSG 54
K+G L KQG R K+WK R F+L D L+Y++ + C++ +NS+
Sbjct: 9 KQGCLLKQGHRRKNWKVRKFVLRDDPAYLHYYDPAKGEDPLGAIHLRGCVVTAVEDNSNP 68
Query: 55 RYKSWKRRWF--ILNDKCLYYFEYTTDK 80
S + F I D+ YY + T
Sbjct: 69 AKGSVEGNLFEIITADEVHYYLQAATPA 96
>gnl|CDD|241409 cd13255, PH_TAAP2-like, Tandem PH-domain-containing protein 2
Pleckstrin homology (PH) domain. The binding of TAPP2
(also called PLEKHA2) adaptors to PtdIns(3,4)P(2), but
not PI(3,4, 5)P3, function as negative regulators of
insulin and PI3K signalling pathways (i.e.
TAPP/utrophin/syntrophin complex). TAPP2 contains two
sequential PH domains in which the C-terminal PH domain
specifically binds PtdIns(3,4)P2 with high affinity. The
N-terminal PH domain does not interact with any
phosphoinositide tested. They also contain a C-terminal
PDZ-binding motif that interacts with several
PDZ-binding proteins, including PTPN13 (known previously
as PTPL1 or FAP-1) as well as the scaffolding proteins
MUPP1 (multiple PDZ-domain-containing protein 1),
syntrophin and utrophin. The members here are most
sequence similar to TAPP2 proteins, but may not be
actual TAPP2 proteins. PH domains have diverse
functions, but in general are involved in targeting
proteins to the appropriate cellular location or in the
interaction with a binding partner. They share little
sequence conservation, but all have a common fold, which
is electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 110
Score = 55.5 bits (134), Expect = 2e-10
Identities = 34/112 (30%), Positives = 48/112 (42%), Gaps = 25/112 (22%)
Query: 101 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPR--GIIPLENIQ-VREVHDRHK 157
K G+L K+G R K+WK+RWF+L L Y Y DKE R +I L +I EV +
Sbjct: 8 KAGYLEKKGERRKTWKKRWFVLRPTKLAY--YKNDKEYRLLRLIDLTDIHTCTEVQLKKH 65
Query: 158 PHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCLSL 209
+ F + T T Y A + E + WI ++L
Sbjct: 66 DNTFGIVTP-------------------ARTFYVQ-ADSKAEMESWISAINL 97
Score = 45.9 bits (109), Expect = 9e-07
Identities = 18/36 (50%), Positives = 23/36 (63%), Gaps = 2/36 (5%)
Query: 9 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDK 44
K G+L K+G R K+WK+RWF+L L Y Y DK
Sbjct: 8 KAGYLEKKGERRKTWKKRWFVLRPTKLAY--YKNDK 41
Score = 32.8 bits (75), Expect = 0.039
Identities = 14/36 (38%), Positives = 21/36 (58%), Gaps = 2/36 (5%)
Query: 49 IENSSGRYKSWKRRWFILNDKCLYYFEYTTDKPFKI 84
+E R K+WK+RWF+L L Y Y DK +++
Sbjct: 12 LEKKGERRKTWKKRWFVLRPTKLAY--YKNDKEYRL 45
>gnl|CDD|241455 cd13301, PH1_Pleckstrin_2, Pleckstrin 2 Pleckstrin homology (PH)
domain, repeat 1. Pleckstrin is a protein found in
platelets. This name is derived from platelet and
leukocyte C kinase substrate and the KSTR string of
amino acids. Pleckstrin 2 contains two PH domains and a
DEP (dishvelled, egl-10, and pleckstrin) domain. Unlike
pleckstrin 1, pleckstrin 2 does not contain obvious
sites of PKC phosphorylation. Pleckstrin 2 plays a role
in actin rearrangement, large lamellipodia and
peripheral ruffle formation, and may help orchestrate
cytoskeletal arrangement. The PH domains of pleckstrin 2
are thought to contribute to lamellipodia formation.
This cd contains the first PH domain repeat. PH domains
have diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They share
little sequence conservation, but all have a common
fold, which is electrostatically polarized. Less than
10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 108
Score = 55.1 bits (133), Expect = 3e-10
Identities = 31/105 (29%), Positives = 47/105 (44%), Gaps = 17/105 (16%)
Query: 101 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVHDRHKPHC 160
KEG+L K+G +WK RWF+L + L Y++ TD P+G+I L+ + C
Sbjct: 5 KEGFLVKKGHVVNNWKARWFVLLEDKLEYYKKKTDSSPKGMILLKGCTITS-------PC 57
Query: 161 FELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIK 205
E F K+ K + + A + EE+D W K
Sbjct: 58 LEYEKRPLVF----------KLTTAKGQDHFLQACSREERDAWAK 92
Score = 37.3 bits (87), Expect = 8e-04
Identities = 17/38 (44%), Positives = 24/38 (63%)
Query: 9 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKSA 46
KEG+L K+G +WK RWF+L + L Y++ TD S
Sbjct: 5 KEGFLVKKGHVVNNWKARWFVLLEDKLEYYKKKTDSSP 42
Score = 28.1 bits (63), Expect = 1.5
Identities = 11/26 (42%), Positives = 16/26 (61%)
Query: 58 SWKRRWFILNDKCLYYFEYTTDKPFK 83
+WK RWF+L + L Y++ TD K
Sbjct: 18 NWKARWFVLLEDKLEYYKKKTDSSPK 43
>gnl|CDD|241282 cd01251, PH2_ADAP, ArfGAP with dual PH domains Pleckstrin homology
(PH) domain, repeat 2. ADAP (also called centaurin
alpha) is a phophatidlyinositide binding protein
consisting of an N-terminal ArfGAP domain and two PH
domains. In response to growth factor activation, PI3K
phosphorylates phosphatidylinositol 4,5-bisphosphate to
phosphatidylinositol 3,4,5-trisphosphate. Centaurin
alpha 1 is recruited to the plasma membrane following
growth factor stimulation by specific binding of its PH
domain to phosphatidylinositol 3,4,5-trisphosphate.
Centaurin alpha 2 is constitutively bound to the plasma
membrane since it binds phosphatidylinositol
4,5-bisphosphate and phosphatidylinositol
3,4,5-trisphosphate with equal affinity. This cd
contains the second PH domain repeat. PH domains have
diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They share
little sequence conservation, but all have a common
fold, which is electrostatically polarized. Less than
10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 105
Score = 54.5 bits (132), Expect = 4e-10
Identities = 29/89 (32%), Positives = 43/89 (48%), Gaps = 9/89 (10%)
Query: 100 DKEGWLWKQGGRYK-SWKRRWFILNDKCLYYFEYTTDKEPRGIIPL----ENIQVREV-- 152
KEG+L K G + +++RWF L+D+ L YF+ D P+G I + E VRE
Sbjct: 3 LKEGYLEKTGPKQTDGFRKRWFTLDDRRLMYFKDPLDAFPKGEIFIGSKEEGYSVREGLP 62
Query: 153 --HDRHKPHCFELFTSGFEFIKACKTDSE 179
H F L T F+ + +T+ E
Sbjct: 63 AGIKGHWGFGFTLVTPDRTFVLSAETEEE 91
Score = 44.1 bits (105), Expect = 3e-06
Identities = 14/33 (42%), Positives = 22/33 (66%), Gaps = 1/33 (3%)
Query: 8 DKEGWLWKQGGRYK-SWKRRWFILNDKCLYYFE 39
KEG+L K G + +++RWF L+D+ L YF+
Sbjct: 3 LKEGYLEKTGPKQTDGFRKRWFTLDDRRLMYFK 35
>gnl|CDD|241404 cd13250, PH_ACAP, ArfGAP with coiled-coil, ankyrin repeat and PH
domains Pleckstrin homology (PH) domain. ACAP (also
called centaurin beta) functions both as a Rab35
effector and as an Arf6-GTPase-activating protein (GAP)
by which it controls actin remodeling and membrane
trafficking. ACAP contain an NH2-terminal
bin/amphiphysin/Rvs (BAR) domain, a phospholipid-binding
domain, a PH domain, a GAP domain, and four ankyrin
repeats. The AZAPs constitute a family of Arf GAPs that
are characterized by an NH2-terminal pleckstrin homology
(PH) domain and a central Arf GAP domain followed by two
or more ankyrin repeats. On the basis of sequence and
domain organization, the AZAP family is further
subdivided into four subfamilies: 1) the ACAPs contain
an NH2-terminal bin/amphiphysin/Rvs (BAR) domain (a
phospholipid-binding domain that is thought to sense
membrane curvature), a single PH domain followed by the
GAP domain, and four ankyrin repeats; 2) the ASAPs also
contain an NH2-terminal BAR domain, the tandem PH
domain/GAP domain, three ankyrin repeats, two
proline-rich regions, and a COOH-terminal Src homology 3
domain; 3) the AGAPs contain an NH2-terminal GTPase-like
domain (GLD), a split PH domain, and the GAP domain
followed by four ankyrin repeats; and 4) the ARAPs
contain both an Arf GAP domain and a Rho GAP domain, as
well as an NH2-terminal sterile-a motif (SAM), a
proline-rich region, a GTPase-binding domain, and five
PH domains. PMID 18003747 and 19055940 Centaurin can
bind to phosphatidlyinositol (3,4,5)P3. PH domains have
diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They share
little sequence conservation, but all have a common
fold, which is electrostatically polarized. Less than
10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 98
Score = 53.8 bits (130), Expect = 7e-10
Identities = 26/111 (23%), Positives = 49/111 (44%), Gaps = 26/111 (23%)
Query: 101 KEGWLWKQ-GGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQ---VREVHDRH 156
KEG+L+K+ +K+WKRRWF + + L Y K+ + +E+++ V+ D
Sbjct: 1 KEGYLFKRSSNAFKTWKRRWFSIQNGQLVY--QKRFKKDTPTVVVEDLRLCTVKPCEDID 58
Query: 157 KPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCL 207
+ CFE+ + Y + A + E++ WI+ +
Sbjct: 59 RRFCFEVVSP--------------------TKSYMLQAESEEDRQAWIQAI 89
Score = 43.4 bits (103), Expect = 5e-06
Identities = 14/31 (45%), Positives = 21/31 (67%), Gaps = 1/31 (3%)
Query: 9 KEGWLWKQ-GGRYKSWKRRWFILNDKCLYYF 38
KEG+L+K+ +K+WKRRWF + + L Y
Sbjct: 1 KEGYLFKRSSNAFKTWKRRWFSIQNGQLVYQ 31
Score = 39.9 bits (94), Expect = 7e-05
Identities = 12/37 (32%), Positives = 19/37 (51%)
Query: 52 SSGRYKSWKRRWFILNDKCLYYFEYTTDKPFKIPEDD 88
SS +K+WKRRWF + + L Y + + +D
Sbjct: 9 SSNAFKTWKRRWFSIQNGQLVYQKRFKKDTPTVVVED 45
>gnl|CDD|241529 cd13378, PH_RhoGAP2, Rho GTPase activating protein 2 Pleckstrin
homology (PH) domain. RhoGAP2 (also called RhoGap22 or
ArhGap22) are involved in cell polarity, cell morphology
and cytoskeletal organization. They activate a GTPase
belonging to the RAS superfamily of small GTP-binding
proteins. The encoded protein is insulin-responsive, is
dependent on the kinase Akt, and requires the
Akt-dependent 14-3-3 binding protein which binds
sequentially to two serine residues resulting in
regulation of cell motility. Members here contain an
N-terminal PH domain followed by a RhoGAP domain and
either a BAR or TATA Binding Protein (TBP) Associated
Factor 4 (TAF4) domain. PH domains have diverse
functions, but in general are involved in targeting
proteins to the appropriate cellular location or in the
interaction with a binding partner. They share little
sequence conservation, but all have a common fold, which
is electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 116
Score = 53.4 bits (128), Expect = 1e-09
Identities = 30/110 (27%), Positives = 54/110 (49%), Gaps = 12/110 (10%)
Query: 101 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVH---DRHK 157
K GWL KQ K+W++RWF+L L+Y++ + +P+G I L+ QV E+ +
Sbjct: 5 KAGWLKKQRSIMKNWQQRWFVLRGDQLFYYKDEEETKPQGCISLQGSQVNELPPNPEEPG 64
Query: 158 PHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCL 207
H FE+ G + + V H + + A + + ++W+K +
Sbjct: 65 KHLFEILPGG---------AGDREKVPMNHEAFLLMANSQSDMEDWVKAI 105
Score = 35.3 bits (81), Expect = 0.004
Identities = 14/31 (45%), Positives = 21/31 (67%)
Query: 9 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFE 39
K GWL KQ K+W++RWF+L L+Y++
Sbjct: 5 KAGWLKKQRSIMKNWQQRWFVLRGDQLFYYK 35
Score = 28.4 bits (63), Expect = 1.2
Identities = 15/48 (31%), Positives = 25/48 (52%), Gaps = 1/48 (2%)
Query: 57 KSWKRRWFILN-DKCLYYFEYTTDKPFKIPEDDGNDLMHTFFNPDKEG 103
K+W++RWF+L D+ YY + KP G+ + NP++ G
Sbjct: 17 KNWQQRWFVLRGDQLFYYKDEEETKPQGCISLQGSQVNELPPNPEEPG 64
>gnl|CDD|241407 cd13253, PH1_ARAP, ArfGAP with RhoGAP domain, ankyrin repeat and PH
domain Pleckstrin homology (PH) domain, repeat 1. ARAP
proteins (also called centaurin delta) are
phosphatidylinositol 3,4,5-trisphosphate-dependent
GTPase-activating proteins that modulate actin
cytoskeleton remodeling by regulating ARF and RHO family
members. They bind phosphatidylinositol
3,4,5-trisphosphate (PtdIns(3,4,5)P3) and
phosphatidylinositol 3,4-bisphosphate (PtdIns(3,4,5)P2)
binding. There are 3 mammalian ARAP proteins: ARAP1,
ARAP2, and ARAP3. All ARAP proteins contain a N-terminal
SAM (sterile alpha motif) domain, 5 PH domains, an
ArfGAP domain, 2 ankyrin domain, A RhoGap domain, and a
Ras-associating domain. This hierarchy contains the
first PH domain in ARAP. PH domains have diverse
functions, but in general are involved in targeting
proteins to the appropriate cellular location or in the
interaction with a binding partner. They share little
sequence conservation, but all have a common fold, which
is electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 93
Score = 52.7 bits (127), Expect = 2e-09
Identities = 25/82 (30%), Positives = 39/82 (47%), Gaps = 6/82 (7%)
Query: 100 DKEGWLWKQGGR-YKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENI-QVREVHDRHK 157
K GWL K + +++RW + + L YF + +GIIPL +I VR V D
Sbjct: 1 TKSGWLDKLSPQGNYVFQKRWVVFDGDSLRYFNSEKEMYSKGIIPLSSIKTVRSVGDNK- 59
Query: 158 PHCFELFTSGFEFIKACKTDSE 179
FE+ T F+ +++ E
Sbjct: 60 ---FEVVTGNRTFVFRAESEDE 78
Score = 38.0 bits (89), Expect = 4e-04
Identities = 10/33 (30%), Positives = 16/33 (48%), Gaps = 1/33 (3%)
Query: 8 DKEGWLWKQGGR-YKSWKRRWFILNDKCLYYFE 39
K GWL K + +++RW + + L YF
Sbjct: 1 TKSGWLDKLSPQGNYVFQKRWVVFDGDSLRYFN 33
>gnl|CDD|241435 cd13281, PH_PLEKHD1, Pleckstrin homology (PH) domain containing,
family D (with coiled-coil domains) member 1 PH domain.
Human PLEKHD1 (also called UPF0639, pleckstrin homology
domain containing, family D (with M protein repeats)
member 1) is a single transcript and contains a single
PH domain. PLEKHD1 is conserved in human, chimpanzee, ,
dog, cow, mouse, chicken, zebrafish, and Caenorhabditis
elegans. PH domains have diverse functions, but in
general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 139
Score = 52.7 bits (127), Expect = 4e-09
Identities = 22/80 (27%), Positives = 37/80 (46%), Gaps = 12/80 (15%)
Query: 101 KEGWLWKQ--GGRYKSWKRRWFILNDKCLYYFEYTTDKE----------PRGIIPLENIQ 148
G LWK+ G + W +R+F+L + L Y+ + K+ P+G+IPL
Sbjct: 14 LSGVLWKRPFGRQSAKWSKRFFVLKECFLLYYAESEKKDFEKTRRFNIHPKGVIPLGGCS 73
Query: 149 VREVHDRHKPHCFELFTSGF 168
+ D +P+CF + F
Sbjct: 74 IEAGRDPGRPYCFLISHPDF 93
Score = 32.3 bits (74), Expect = 0.080
Identities = 12/39 (30%), Positives = 20/39 (51%), Gaps = 2/39 (5%)
Query: 9 KEGWLWKQ--GGRYKSWKRRWFILNDKCLYYFEYTTDKS 45
G LWK+ G + W +R+F+L + L Y+ + K
Sbjct: 14 LSGVLWKRPFGRQSAKWSKRFFVLKECFLLYYAESEKKD 52
>gnl|CDD|241427 cd13273, PH_SWAP-70, Switch-associated protein-70 Pleckstrin
homology (PH) domain. SWAP-70 (also called
Differentially expressed in FDCP 6/DEF-6 or IRF4-binding
protein) functions in cellular signal transduction
pathways (in conjunction with Rac), regulates cell
motility through actin rearrangement, and contributes to
the transformation and invasion activity of mouse embryo
fibroblasts. Metazoan SWAP-70 is found in B lymphocytes,
mast cells, and in a variety of organs. Metazoan SWAP-70
contains an N-terminal EF-hand motif, a centrally
located PH domain, and a C-terminal coiled-coil domain.
The PH domain of Metazoan SWAP-70 contains a
phosphoinositide-binding site and a nuclear localization
signal (NLS), which localize SWAP-70 to the plasma
membrane and nucleus, respectively. The NLS is a
sequence of four Lys residues located at the N-terminus
of the C-terminal a-helix; this is a unique
characteristic of the Metazoan SWAP-70 PH domain. The
SWAP-70 PH domain binds PtdIns(3,4,5)P3 and
PtdIns(4,5)P2 embedded in lipid bilayer vesicles. There
are additional plant SWAP70 proteins, but these are not
included in this hierarchy. Rice SWAP70 (OsSWAP70)
exhibits GEF activity toward the its Rho GTPase, OsRac1,
and regulates chitin-induced production of reactive
oxygen species and defense gene expression in rice.
Arabidopsis SWAP70 (AtSWAP70) plays a role in both PAMP-
and effector-triggered immunity. Plant SWAP70 contains
both DH and PH domains, but their arrangement is the
reverse of that in typical DH-PH-type Rho GEFs, wherein
the DH domain is flanked by a C-terminal PH domain. PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 110
Score = 51.9 bits (125), Expect = 5e-09
Identities = 31/106 (29%), Positives = 46/106 (43%), Gaps = 22/106 (20%)
Query: 101 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPL-ENIQVREVHDRHKPH 159
K+G+LWK+G +W+ RWF+L L Y++ KE +G I L N V + DR
Sbjct: 10 KKGYLWKKGHLLPTWRERWFVLKPNSLSYYKSEDLKEKKGEIALDSNCCVESLPDREGKK 69
Query: 160 C-FELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWI 204
C F + T Y +SA+ + + EWI
Sbjct: 70 CRFCVKTP--------------------DKTYELSASDHKTRQEWI 95
Score = 39.6 bits (93), Expect = 1e-04
Identities = 18/65 (27%), Positives = 32/65 (49%), Gaps = 7/65 (10%)
Query: 9 KEGWLWKQGGRYKSWKRRWFILNDKCLYYF--EYTTDKSACLIENSSGR-----YKSWKR 61
K+G+LWK+G +W+ RWF+L L Y+ E +K + +S+ + K+
Sbjct: 10 KKGYLWKKGHLLPTWRERWFVLKPNSLSYYKSEDLKEKKGEIALDSNCCVESLPDREGKK 69
Query: 62 RWFIL 66
F +
Sbjct: 70 CRFCV 74
>gnl|CDD|241530 cd13379, PH_RhoGap24, Rho GTPase activating protein 24 Pleckstrin
homology (PH) domain. RhoGap24 (also called ARHGAP24,
p73RhoGAp, and Filamin-A-associated RhoGAP) like other
RhoGAPs are involved in cell polarity, cell morphology
and cytoskeletal organization. They act as GTPase
activators for the Rac-type GTPases by converting them
to an inactive GDP-bound state and control actin
remodeling by inactivating Rac downstream of Rho leading
to suppress leading edge protrusion and promotes cell
retraction to achieve cellular polarity and are able to
suppress RAC1 and CDC42 activity in vitro.
Overexpression of these proteins induces cell rounding
with partial or complete disruption of actin stress
fibers and formation of membrane ruffles, lamellipodia,
and filopodia. Members here contain an N-terminal PH
domain followed by a RhoGAP domain and either a BAR or
TATA Binding Protein (TBP) Associated Factor 4 (TAF4)
domain. PH domains have diverse functions, but in
general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 114
Score = 48.8 bits (116), Expect = 8e-08
Identities = 33/107 (30%), Positives = 51/107 (47%), Gaps = 8/107 (7%)
Query: 101 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVHDRHKPHC 160
K GWL KQGG K+W RWF+L LYYF+ + +P G I L +V E P
Sbjct: 5 KCGWLRKQGGFVKTWHTRWFVLKGDQLYYFKDEDETKPLGTIFLPGNRVTE-----HPCN 59
Query: 161 FELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCL 207
E +F+ + + + H Y + A+T + ++W+K +
Sbjct: 60 EE---EPGKFLFEVVPGGDRERMTANHETYLLMASTQNDMEDWVKSI 103
Score = 40.7 bits (95), Expect = 5e-05
Identities = 18/31 (58%), Positives = 21/31 (67%)
Query: 9 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFE 39
K GWL KQGG K+W RWF+L LYYF+
Sbjct: 5 KCGWLRKQGGFVKTWHTRWFVLKGDQLYYFK 35
Score = 28.0 bits (62), Expect = 1.6
Identities = 11/27 (40%), Positives = 15/27 (55%)
Query: 49 IENSSGRYKSWKRRWFILNDKCLYYFE 75
+ G K+W RWF+L LYYF+
Sbjct: 9 LRKQGGFVKTWHTRWFVLKGDQLYYFK 35
>gnl|CDD|241450 cd13296, PH2_MyoX, Myosin X Pleckstrin homology (PH) domain, repeat
2. MyoX, a MyTH-FERM myosin, is a molecular motor that
has crucial functions in the transport and/or tethering
of integrins in the actin-based extensions known as
filopodia, microtubule binding, and in netrin-mediated
axon guidance. It functions as a dimer. MyoX walks on
bundles of actin, rather than single filaments, unlike
the other unconventional myosins. MyoX is present in
organisms ranging from humans to choanoflagellates, but
not in Drosophila and Caenorhabditis elegans.MyoX
consists of a N-terminal motor/head region, a neck made
of 3 IQ motifs, and a tail consisting of a coiled-coil
domain, a PEST region, 3 PH domains, a myosin tail
homology 4 (MyTH4), and a FERM domain at its very
C-terminus. The first PH domain in the MyoX tail is a
split-PH domain, interupted by the second PH domain such
that PH 1a and PH 1b flanks PH 2. The third PH domain
(PH 3) follows the PH 1b domain. This cd contains the
second PH repeat. PH domains have diverse functions, but
in general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 111
Score = 48.2 bits (115), Expect = 1e-07
Identities = 30/115 (26%), Positives = 47/115 (40%), Gaps = 29/115 (25%)
Query: 101 KEGWLWKQGG-----RYKSWKRRWFILNDKCLYYFEYTTDKE-PRGIIPLENIQVREVHD 154
K GWL+K+GG K+WK RWF+L D L Y+E + G I + + +E+ D
Sbjct: 9 KSGWLYKKGGGSSTLSRKNWKSRWFVLRDTVLKYYENDQEGAKALGTIDIRSA--KEIVD 66
Query: 155 RH-KPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCLS 208
K + F++ T Y A + E+ +W L+
Sbjct: 67 NTPKENGFDITTPS--------------------RTYHFVAESPEDASQWFSVLT 101
Score = 42.0 bits (99), Expect = 2e-05
Identities = 19/45 (42%), Positives = 26/45 (57%), Gaps = 5/45 (11%)
Query: 9 KEGWLWKQGG-----RYKSWKRRWFILNDKCLYYFEYTTDKSACL 48
K GWL+K+GG K+WK RWF+L D L Y+E + + L
Sbjct: 9 KSGWLYKKGGGSSTLSRKNWKSRWFVLRDTVLKYYENDQEGAKAL 53
Score = 32.8 bits (75), Expect = 0.037
Identities = 11/23 (47%), Positives = 15/23 (65%)
Query: 57 KSWKRRWFILNDKCLYYFEYTTD 79
K+WK RWF+L D L Y+E +
Sbjct: 26 KNWKSRWFVLRDTVLKYYENDQE 48
>gnl|CDD|241462 cd13308, PH_3BP2, SH3 domain-binding protein 2 Pleckstrin homology
(PH) domain. SH3BP2 (the gene that encodes the adaptor
protein 3BP2), HD, ITU, IT10C3, and ADD1 are located
near the Huntington's Disease Gene on Human Chromosome
4pl6.3. SH3BP2 lies in a region that is often missing in
individuals with Wolf-Hirschhorn syndrome (WHS). Gain of
function mutations in SH3BP2 causes enhanced B-cell
antigen receptor (BCR)-mediated activation of nuclear
factor of activated T cells (NFAT), resulting in a rare,
genetic disorder called cherubism. This results in an
increase in the signaling complex formation with Syk,
phospholipase C-gamma2 (PLC-gamma2), and Vav1. It was
recently discovered that Tankyrase regulates 3BP2
stability through ADP-ribosylation and ubiquitylation by
the E3-ubiquitin ligase. Cherubism mutations uncouple
3BP2 from Tankyrase-mediated protein destruction, which
results in its stabilization and subsequent
hyperactivation of the Src, Syk, and Vav signaling
pathways. SH3BP2 is also a potential negative regulator
of the abl oncogene. PH domains have diverse functions,
but in general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 113
Score = 48.2 bits (115), Expect = 1e-07
Identities = 28/111 (25%), Positives = 46/111 (41%), Gaps = 18/111 (16%)
Query: 100 DKEGWLWKQGGRYKS---WKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVHDRH 156
G+L K+GG K W R+ I++ C+YYF+ + +P+G+ L R +
Sbjct: 10 THSGYLTKKGGSQKQLLKWPLRYVIIHKGCVYYFKNSQSAKPKGVFSLNGYNRRAAEETT 69
Query: 157 KPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCL 207
F F+ I K H + SA + +E EW++ L
Sbjct: 70 SKKKF-----VFKIIHLSK----------DHRTWYFSAKSEDEMKEWMESL 105
Score = 40.5 bits (95), Expect = 7e-05
Identities = 13/42 (30%), Positives = 21/42 (50%), Gaps = 3/42 (7%)
Query: 8 DKEGWLWKQGGRYKS---WKRRWFILNDKCLYYFEYTTDKSA 46
G+L K+GG K W R+ I++ C+YYF+ +
Sbjct: 10 THSGYLTKKGGSQKQLLKWPLRYVIIHKGCVYYFKNSQSAKP 51
>gnl|CDD|241452 cd13298, PH1_PH_fungal, Fungal proteins Pleckstrin homology (PH)
domain, repeat 1. The functions of these fungal
proteins are unknown, but they all contain 2 PH domains.
This cd represents the first PH repeat. PH domains have
diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They share
little sequence conservation, but all have a common
fold, which is electrostatically polarized. Less than
10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 106
Score = 47.6 bits (114), Expect = 1e-07
Identities = 21/67 (31%), Positives = 38/67 (56%), Gaps = 1/67 (1%)
Query: 101 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENI-QVREVHDRHKPH 159
K GWL K+ + K+WK+RWF+L L Y++ + + R +I L + V + D+ + +
Sbjct: 8 KSGWLLKRSRKTKTWKKRWFVLRPCQLSYYKDEKEYKLRRVINLSELTAVAPLKDKKRKN 67
Query: 160 CFELFTS 166
F ++T
Sbjct: 68 VFAIYTP 74
Score = 34.1 bits (79), Expect = 0.010
Identities = 17/40 (42%), Positives = 23/40 (57%), Gaps = 2/40 (5%)
Query: 9 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKSACL 48
K GWL K+ + K+WK+RWF+L L Y Y +K L
Sbjct: 8 KSGWLLKRSRKTKTWKKRWFVLRPCQLSY--YKDEKEYKL 45
Score = 26.8 bits (60), Expect = 4.3
Identities = 13/31 (41%), Positives = 19/31 (61%), Gaps = 1/31 (3%)
Query: 44 KSACLIENSSGRYKSWKRRWFILNDKCLYYF 74
KS L++ S K+WK+RWF+L L Y+
Sbjct: 8 KSGWLLKRSRKT-KTWKKRWFVLRPCQLSYY 37
>gnl|CDD|241470 cd13316, PH_Boi, Boi family Pleckstrin homology domain. Yeast Boi
proteins Boi1 and Boi2 are functionally redundant and
important for cell growth with Boi mutants displaying
defects in bud formation and in the maintenance of cell
polarity.They appear to be linked to Rho-type GTPase,
Cdc42 and Rho3. Boi1 and Boi2 display two-hybrid
interactions with the GTP-bound ("active") form of
Cdc42, while Rho3 can suppress of the lethality caused
by deletion of Boi1 and Boi2. These findings suggest
that Boi1 and Boi2 are targets of Cdc42 that promote
cell growth in a manner that is regulated by Rho3. Boi
proteins contain a N-terminal SH3 domain, followed by a
SAM (sterile alpha motif) domain, a proline-rich region,
which mediates binding to the second SH3 domain of Bem1,
and C-terminal PH domain. The PH domain is essential for
its function in cell growth and is important for
localization to the bud, while the SH3 domain is needed
for localization to the neck. PH domains have diverse
functions, but in general are involved in targeting
proteins to the appropriate cellular location or in the
interaction with a binding partner. They share little
sequence conservation, but all have a common fold, which
is electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 95
Score = 47.4 bits (113), Expect = 1e-07
Identities = 30/107 (28%), Positives = 45/107 (42%), Gaps = 20/107 (18%)
Query: 103 GWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVHDRHKP--HC 160
GW+ K+G RY +WK R+F+L LYY + D + +G+I L +V KP +
Sbjct: 3 GWMKKRGERYGTWKTRYFVLKGTRLYYLKSENDSKEKGLIDLTGHRVTVDDSNSKPGRYG 62
Query: 161 FELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCL 207
F+L V V+ + E EW+K L
Sbjct: 63 FKL------------------VPPAVEKVHYFAVDEKEVLREWMKAL 91
Score = 39.7 bits (93), Expect = 9e-05
Identities = 15/35 (42%), Positives = 21/35 (60%)
Query: 11 GWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKS 45
GW+ K+G RY +WK R+F+L LYY + D
Sbjct: 3 GWMKKRGERYGTWKTRYFVLKGTRLYYLKSENDSK 37
Score = 30.4 bits (69), Expect = 0.19
Identities = 12/31 (38%), Positives = 16/31 (51%)
Query: 53 SGRYKSWKRRWFILNDKCLYYFEYTTDKPFK 83
RY +WK R+F+L LYY + D K
Sbjct: 9 GERYGTWKTRYFVLKGTRLYYLKSENDSKEK 39
>gnl|CDD|241274 cd01241, PH_PKB, Protein Kinase B-like pleckstrin homology (PH)
domain. PKB (also called Akt), a member of the AGC
kinase family, is a phosphatidylinositol 3'-kinase
(PI3K)-dependent Ser/Thr kinase which alters the
activity of the targeted protein. The name AGC is based
on the three proteins that it is most similar to
cAMP-dependent protein kinase 1 (PKA; also known as
PKAC), cGMP-dependent protein kinase (PKG; also known as
CGK1) and protein kinase C (PKC). Human Akt has three
isoforms derived for distinct genes: Akt1/PKBalpha,
Akt2/PKBbeta, and Akt3/PKBgamma. All Akts have an
N-terminal PH domain with an activating Thr
phosphorylation site, a kinase domain, and a short
C-terminal regulatory tail with an activating Ser
phosphorylation site. The PH domain recruits Akt to the
plasma membrane by binding to phosphoinositides
(PtdIns-3,4-P2) and is required for activation. The
phosphorylation of Akt at its Thr and Ser
phosphorylation sites leads to increased Akt activity
toward forkhead transcription factors, the mammalian
target of rapamycin (mTOR), and the
Bcl-xL/Bcl-2-associated death promoter (BAD), all of
which possess a consensus motif R-X-R-XX-ST-B (X = amino
acid, B = bulky hydrophobic residue) for Akt
phosphorylation. PH domains have diverse functions, but
in general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 121
Score = 48.1 bits (115), Expect = 2e-07
Identities = 24/109 (22%), Positives = 39/109 (35%), Gaps = 33/109 (30%)
Query: 98 NPDKEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVHDRHK 157
+ KEGWL K+G K+W+ RWF+L + D + +G Q ++V K
Sbjct: 2 SVVKEGWLTKRGEYIKTWRPRWFVL---------KSDDGKFKGYKEKP--QDKDVDPTPK 50
Query: 158 P-HCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIK 205
P + F + +T Y + +E E
Sbjct: 51 PLNNFS--------VAIKRT-------------YLIKTEKPKEVIENTF 78
Score = 45.1 bits (107), Expect = 2e-06
Identities = 13/25 (52%), Positives = 18/25 (72%)
Query: 6 NPDKEGWLWKQGGRYKSWKRRWFIL 30
+ KEGWL K+G K+W+ RWF+L
Sbjct: 2 SVVKEGWLTKRGEYIKTWRPRWFVL 26
Score = 28.1 bits (63), Expect = 1.6
Identities = 6/13 (46%), Positives = 9/13 (69%)
Query: 54 GRYKSWKRRWFIL 66
K+W+ RWF+L
Sbjct: 14 EYIKTWRPRWFVL 26
>gnl|CDD|241369 cd13215, PH-GRAM1_AGT26, Autophagy-related protein 26/Sterol
3-beta-glucosyltransferase Pleckstrin homology (PH)
domain, repeat 1. ATG26 (also called
UGT51/UDP-glycosyltransferase 51), a member of the
glycosyltransferase 28 family, resulting in the
biosynthesis of sterol glucoside. ATG26 in decane
metabolism and autophagy. There are 32 known
autophagy-related (ATG) proteins, 17 are components of
the core autophagic machinery essential for all
autophagy-related pathways and 15 are the additional
components required only for certain pathways or
species. The core autophagic machinery includes 1) the
ATG9 cycling system (ATG1, ATG2, ATG9, ATG13, ATG18, and
ATG27), 2) the phosphatidylinositol 3-kinase complex
(ATG6/VPS30, ATG14, VPS15, and ATG34), and 3) the
ubiquitin-like protein system (ATG3, ATG4, ATG5, ATG7,
ATG8, ATG10, ATG12, and ATG16). Less is known about how
the core machinery is adapted or modulated with
additional components to accommodate the nonselective
sequestration of bulk cytosol (autophagosome formation)
or selective sequestration of specific cargos (Cvt
vesicle, pexophagosome, or bacteria-containing
autophagosome formation). The pexophagosome-specific
additions include the ATG30-ATG11-ATG17
receptor-adaptors complex, the coiled-coil protein
ATG25, and the sterol glucosyltransferase ATG26. ATG26
is necessary for the degradation of medium peroxisomes.
It contains 2 GRAM domains and a single PH domain. PH
domains are only found in eukaryotes. They share little
sequence conservation, but all have a common fold, which
is electrostatically polarized. PH domains also have
diverse functions. They are often involved in targeting
proteins to the plasma membrane, but few display strong
specificity in lipid binding. Any specificity is usually
determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 130
Score = 47.9 bits (115), Expect = 2e-07
Identities = 28/109 (25%), Positives = 42/109 (38%), Gaps = 22/109 (20%)
Query: 101 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKE-PRGIIPLENIQVREVHDRHK-P 158
K G+L K+G R + R WF+L L ++ +TD P G I L E+ D+ K
Sbjct: 31 KSGYLSKRGKRTPRYNRYWFVLKGDVLSWYRSSTDLYFPHGTIDLRYGISAEITDKDKET 90
Query: 159 HCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCL 207
F++ T+ Y A + EW+K L
Sbjct: 91 THFKITTN--------------------SRTYTFKADSEPSAKEWVKAL 119
Score = 36.4 bits (85), Expect = 0.002
Identities = 13/35 (37%), Positives = 20/35 (57%)
Query: 9 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTD 43
K G+L K+G R + R WF+L L ++ +TD
Sbjct: 31 KSGYLSKRGKRTPRYNRYWFVLKGDVLSWYRSSTD 65
Score = 29.1 bits (66), Expect = 0.75
Identities = 8/28 (28%), Positives = 13/28 (46%)
Query: 52 SSGRYKSWKRRWFILNDKCLYYFEYTTD 79
R + R WF+L L ++ +TD
Sbjct: 38 RGKRTPRYNRYWFVLKGDVLSWYRSSTD 65
>gnl|CDD|241463 cd13309, PH_SKIP, SifA and kinesin-interacting protein Pleckstrin
homology (PH) domain. SKIP (also called
PLEKHM2/Pleckstrin homology domain-containing family M
member 2) is a soluble cytosolic protein that contains a
RUN domain and a PH domain separated by a unstructured
linker region. SKIP is a target of the Salmonella
effector protein SifA and the SifA-SKIP complex
regulates kinesin-1 on the bacterial vacuole. The PH
domain of SKIP binds to the N-terminal region of SifA
while the N-terminus of SKIP is proposed to bind the TPR
domain of the kinesin light chain. The opposite side of
the SKIP PH domain is proposed to bind
phosphoinositides. TSifA, SKIP, SseJ, and RhoA family
GTPases are also thought to promote host membrane
tubulation. Recently, it was shown that the lysosomal
GTPase Arl8 binds to the kinesin-1 linker SKIP and that
both are required for the normal intracellular
distribution of lysosomes. Interestingly, two kinesin
light chain binding motifs (WD) in SKIP have now been
identified to match a consensus sequence for a kinesin
light chain binding site found in several proteins
including calsyntenin-1/alcadein, caytaxin, and vaccinia
virus A36. SKIP has also been shown to interact with
Rab1A. PH domains have diverse functions, but in general
are involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 103
Score = 47.4 bits (113), Expect = 2e-07
Identities = 27/117 (23%), Positives = 43/117 (36%), Gaps = 26/117 (22%)
Query: 101 KEGWLWKQGGRYKS----WKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQ---VREVH 153
KEG L + G WK +F+L + LY + +D+ P I L Q R ++
Sbjct: 2 KEGPLMYKTGTSYLGGETWKPGYFLLKNGVLYQYPDRSDRLPLLSISLGGEQCGGCRRIN 61
Query: 154 DRHKPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCLSLH 210
+ +PH FEL + ++A E EW++ L
Sbjct: 62 NTDRPHSFELILTD-------------------RPSLELAAPDEYEASEWLQSLCQS 99
>gnl|CDD|241271 cd01238, PH_Btk, Bruton's tyrosine kinase pleckstrin homology (PH)
domain. Btk is a member of the Tec family of
cytoplasmic protein tyrosine kinases that includes BMX,
IL2-inducible T-cell kinase (Itk) and Tec. Btk plays a
role in the maturation of B cells. Tec proteins general
have an N-terminal PH domain, followed by a Tek homology
(TH) domain, a SH3 domain, a SH2 domain and a kinase
domain. The Btk PH domain binds phosphatidylinositol
3,4,5-trisphosphate and responds to signalling via
phosphatidylinositol 3-kinase. The PH domain is also
involved in membrane anchoring which is confirmed by the
discovery of a mutation of a critical arginine residue
in the BTK PH domain. This results in severe human
immunodeficiency known as X-linked agammaglobulinemia
(XLA) in humans and a related disorder is mice.PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 140
Score = 47.2 bits (113), Expect = 5e-07
Identities = 35/112 (31%), Positives = 50/112 (44%), Gaps = 25/112 (22%)
Query: 101 KEGWLWK--QGGRYKS---WKRRWFILNDKCLYYFEY--TTDKEPRGIIPLENIQ-VREV 152
KEG L K QG + +K RWF+L L Y+E + +G I L I+ V EV
Sbjct: 1 KEGLLVKRSQGKKRFGPVNYKERWFVLTKSSLSYYEGDGGKRGKEKGSIDLSKIKCVEEV 60
Query: 153 HDRHKPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWI 204
D F + F +VV +T+Y + A + E++DEWI
Sbjct: 61 KDD------ASFERKYPF----------QVVYDDYTLY-VFAPSEEDRDEWI 95
Score = 38.7 bits (91), Expect = 4e-04
Identities = 16/45 (35%), Positives = 20/45 (44%), Gaps = 5/45 (11%)
Query: 9 KEGWLWK--QGGRYKS---WKRRWFILNDKCLYYFEYTTDKSACL 48
KEG L K QG + +K RWF+L L Y+E K
Sbjct: 1 KEGLLVKRSQGKKRFGPVNYKERWFVLTKSSLSYYEGDGGKRGKE 45
Score = 33.4 bits (77), Expect = 0.033
Identities = 9/25 (36%), Positives = 13/25 (52%)
Query: 57 KSWKRRWFILNDKCLYYFEYTTDKP 81
++K RWF+L L Y+E K
Sbjct: 18 VNYKERWFVLTKSSLSYYEGDGGKR 42
>gnl|CDD|241391 cd13237, PH2_FGD5_FGD6, FYVE, RhoGEF and PH domain
containing/faciogenital dysplasia proteins 5 and 6
pleckstrin homology (PH) domain, C-terminus. FGD5
regulates promotes angiogenesis of vascular endothelial
growth factor (VEGF) in vascular endothelial cells,
including network formation, permeability, directional
movement, and proliferation. The specific function of
FGD6 is unknown. In general, FGDs have a RhoGEF (DH)
domain, followed by a PH domain, a FYVE domain and a
C-terminal PH domain. All FGDs are guanine nucleotide
exchange factors that activate the Rho GTPase Cdc42, an
important regulator of membrane trafficking. The RhoGEF
domain is responsible for GEF catalytic activity, while
the PH domain is involved in intracellular targeting of
the DH domain. PH domains have diverse functions, but in
general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 90
Score = 45.8 bits (109), Expect = 6e-07
Identities = 24/80 (30%), Positives = 37/80 (46%), Gaps = 3/80 (3%)
Query: 103 GWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVHDRH---KPH 159
G+L+++ + KSWKR WF+L DK LY ++ + D IPL V + +
Sbjct: 3 GYLYRRKRKKKSWKRLWFVLKDKVLYTYKASEDVVALESIPLLGYTVVPAKEGFEGDESL 62
Query: 160 CFELFTSGFEFIKACKTDSE 179
F+L G D+E
Sbjct: 63 VFQLLHKGQLPYIFRADDAE 82
Score = 43.9 bits (104), Expect = 3e-06
Identities = 16/36 (44%), Positives = 25/36 (69%)
Query: 11 GWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKSA 46
G+L+++ + KSWKR WF+L DK LY ++ + D A
Sbjct: 3 GYLYRRKRKKKSWKRLWFVLKDKVLYTYKASEDVVA 38
Score = 35.0 bits (81), Expect = 0.004
Identities = 13/29 (44%), Positives = 18/29 (62%)
Query: 52 SSGRYKSWKRRWFILNDKCLYYFEYTTDK 80
+ KSWKR WF+L DK LY ++ + D
Sbjct: 8 RKRKKKSWKRLWFVLKDKVLYTYKASEDV 36
>gnl|CDD|241266 cd01233, PH_KIFIA_KIFIB, KIFIA and KIFIB protein pleckstrin
homology (PH) domain. The kinesin-3 family motors KIFIA
(Caenorhabditis elegans homolog unc-104) and KIFIB
transport synaptic vesicle precursors that contain
synaptic vesicle proteins, such as synaptophysin,
synaptotagmin and the small GTPase RAB3A, but they do
not transport organelles that contain plasma membrane
proteins. They have a N-terminal motor domain, followed
by a coiled-coil domain, and a C-terminal PH domain.
KIF1A adopts a monomeric form in vitro, but acts as a
processive dimer in vivo. KIF1B has alternatively
spliced isoforms distinguished by the presence or
absence of insertion sequences in the conserved
amino-terminal region of the protein; this results in
their different motor activities. KIF1A and KIF1B bind
to RAB3 proteins through the adaptor protein
mitogen-activated protein kinase (MAPK) -activating
death domain (MADD; also calledDENN), which was first
identified as a RAB3 guanine nucleotide exchange factor
(GEF). PH domains have diverse functions, but in general
are involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 111
Score = 45.7 bits (109), Expect = 8e-07
Identities = 19/85 (22%), Positives = 37/85 (43%), Gaps = 8/85 (9%)
Query: 101 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVHDRH---- 156
K+G+L W RRW +L L+ + D + RG+I L +V +
Sbjct: 16 KKGYLLFLEDATDGWVRRWVVLRRPYLHIYSSEKDGDERGVINLSTARVE--YSPDQEAL 73
Query: 157 --KPHCFELFTSGFEFIKACKTDSE 179
+P+ F ++T ++ +++ E
Sbjct: 74 LGRPNVFAVYTPTNSYLLQARSEKE 98
Score = 26.8 bits (60), Expect = 4.3
Identities = 8/22 (36%), Positives = 11/22 (50%)
Query: 9 KEGWLWKQGGRYKSWKRRWFIL 30
K+G+L W RRW +L
Sbjct: 16 KKGYLLFLEDATDGWVRRWVVL 37
>gnl|CDD|241453 cd13299, PH2_PH_fungal, Fungal proteins Pleckstrin homology (PH)
domain, repeat 2. The functions of these fungal
proteins are unknown, but they all contain 2 PH domains.
This cd represents the second PH repeat. PH domains have
diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They share
little sequence conservation, but all have a common
fold, which is electrostatically polarized. Less than
10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 102
Score = 44.9 bits (107), Expect = 1e-06
Identities = 17/68 (25%), Positives = 36/68 (52%), Gaps = 4/68 (5%)
Query: 102 EGWLWKQGGR-YKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQ-VREVH--DRHK 157
+G+L + WK+ W +L ++ L +++ ++ P IIP+++I V E+ + K
Sbjct: 9 QGYLQVLKKKGVNQWKKYWLVLRNRSLSFYKDQSEYSPVKIIPIDDIIDVVELDPLSKSK 68
Query: 158 PHCFELFT 165
C ++ T
Sbjct: 69 KWCLQIIT 76
Score = 31.8 bits (73), Expect = 0.067
Identities = 7/30 (23%), Positives = 16/30 (53%), Gaps = 1/30 (3%)
Query: 10 EGWLWKQGGR-YKSWKRRWFILNDKCLYYF 38
+G+L + WK+ W +L ++ L ++
Sbjct: 9 QGYLQVLKKKGVNQWKKYWLVLRNRSLSFY 38
Score = 25.7 bits (57), Expect = 9.5
Identities = 8/30 (26%), Positives = 17/30 (56%), Gaps = 1/30 (3%)
Query: 56 YKSWKRRWFILNDKCLYYFEYTTD-KPFKI 84
WK+ W +L ++ L +++ ++ P KI
Sbjct: 20 VNQWKKYWLVLRNRSLSFYKDQSEYSPVKI 49
>gnl|CDD|241291 cd01260, PH_CNK_mammalian-like, Connector enhancer of KSR (Kinase
suppressor of ras) (CNK) pleckstrin homology (PH)
domain. CNK family members function as protein
scaffolds, regulating the activity and the subcellular
localization of RAS activated RAF. There is a single CNK
protein present in Drosophila and Caenorhabditis elegans
in contrast to mammals which have 3 CNK proteins (CNK1,
CNK2, and CNK3). All of the CNK members contain a
sterile a motif (SAM), a conserved region in CNK (CRIC)
domain, and a PSD-95/DLG-1/ZO-1 (PDZ) domain, and, with
the exception of CNK3, a PH domain. A CNK2 splice
variant CNK2A also has a PDZ domain-binding motif at its
C terminus and Drosophila CNK (D-CNK) also has a domain
known as the Raf-interacting region (RIR) that mediates
binding of the Drosophila Raf kinase. This cd contains
CNKs from mammals, chickens, amphibians, fish, and
crustacea. PH domains have diverse functions, but in
general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 114
Score = 43.9 bits (104), Expect = 4e-06
Identities = 21/70 (30%), Positives = 35/70 (50%), Gaps = 4/70 (5%)
Query: 98 NPDKEGWLWKQ----GGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVH 153
D +GWLWK+ G + WKR WF+L LY++ D++ G I L + ++
Sbjct: 12 RGDCDGWLWKKKEAKGFFGQKWKRYWFVLKGSSLYWYNNPQDEKAEGFINLPDFKIERAS 71
Query: 154 DRHKPHCFEL 163
+ K + F+
Sbjct: 72 ECKKKYAFKA 81
Score = 37.0 bits (86), Expect = 0.001
Identities = 17/45 (37%), Positives = 24/45 (53%), Gaps = 4/45 (8%)
Query: 6 NPDKEGWLWKQ----GGRYKSWKRRWFILNDKCLYYFEYTTDKSA 46
D +GWLWK+ G + WKR WF+L LY++ D+ A
Sbjct: 12 RGDCDGWLWKKKEAKGFFGQKWKRYWFVLKGSSLYWYNNPQDEKA 56
Score = 28.1 bits (63), Expect = 1.7
Identities = 8/16 (50%), Positives = 11/16 (68%)
Query: 59 WKRRWFILNDKCLYYF 74
WKR WF+L LY++
Sbjct: 33 WKRYWFVLKGSSLYWY 48
>gnl|CDD|241294 cd01263, PH_anillin, Anillin Pleckstrin homology (PH) domain.
Anillin (Rhotekin/RTKN; also called PLEKHK/Pleckstrin
homology domain-containing family K) is an actin binding
protein involved in cytokinesis. It interacts with
GTP-bound Rho proteins and results in the inhibition of
their GTPase activity. Dysregulation of the Rho signal
transduction pathway has been implicated in many forms
of cancer. Anillin proteins have a N-terminal HRI
domain/ACC (anti-parallel coiled-coil) finger domain or
Rho-binding domain binds small GTPases from the Rho
family. The C-terminal PH domain helps target anillin to
ectopic septin containing foci. PH domains have diverse
functions, but in general are involved in targeting
proteins to the appropriate cellular location or in the
interaction with a binding partner. They share little
sequence conservation, but all have a common fold, which
is electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 119
Score = 43.8 bits (104), Expect = 5e-06
Identities = 30/106 (28%), Positives = 44/106 (41%), Gaps = 17/106 (16%)
Query: 110 GRYKSWKRRWFILNDKCLYYFEYTTD---KEPRGIIPLENIQVREVH--DR---HKPHCF 161
+W RRW +L L +++Y D K+P G I L +V R +P+ F
Sbjct: 15 SGLGAWHRRWCVLRGGYLSFWKYPEDEEKKKPIGSIDLRKCINEKVEPASRELCARPNTF 74
Query: 162 ELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCL 207
EL T A +D + +SA T EE+ EW+ L
Sbjct: 75 ELETL----RPAEDSDGTNEKKR-----VLLSADTKEERIEWLDAL 111
>gnl|CDD|241406 cd13252, PH1_ADAP, ArfGAP with dual PH domains Pleckstrin homology
(PH) domain, repeat 1. ADAP (also called centaurin
alpha) is a phophatidlyinositide binding protein
consisting of an N-terminal ArfGAP domain and two PH
domains. In response to growth factor activation, PI3K
phosphorylates phosphatidylinositol 4,5-bisphosphate to
phosphatidylinositol 3,4,5-trisphosphate. Centaurin
alpha 1 is recruited to the plasma membrane following
growth factor stimulation by specific binding of its PH
domain to phosphatidylinositol 3,4,5-trisphosphate.
Centaurin alpha 2 is constitutively bound to the plasma
membrane since it binds phosphatidylinositol
4,5-bisphosphate and phosphatidylinositol
3,4,5-trisphosphate with equal affinity. This cd
contains the first PH domain repeat. PH domains have
diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They share
little sequence conservation, but all have a common
fold, which is electrostatically polarized. Less than
10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 125
Score = 43.8 bits (104), Expect = 6e-06
Identities = 18/51 (35%), Positives = 31/51 (60%), Gaps = 2/51 (3%)
Query: 101 KEGWLWKQGGRYKSWKRRWFILNDKC--LYYFEYTTDKEPRGIIPLENIQV 149
KEG+LWK+G +K+R F+L+++ L YF KEP+ +I ++ +
Sbjct: 13 KEGFLWKRGKDNNQFKQRKFVLSEREGTLKYFVKEDAKEPKAVISIKELNA 63
Score = 33.0 bits (76), Expect = 0.034
Identities = 14/32 (43%), Positives = 22/32 (68%), Gaps = 2/32 (6%)
Query: 9 KEGWLWKQGGRYKSWKRRWFILNDKC--LYYF 38
KEG+LWK+G +K+R F+L+++ L YF
Sbjct: 13 KEGFLWKRGKDNNQFKQRKFVLSEREGTLKYF 44
>gnl|CDD|241419 cd13265, PH_evt, Evectin Pleckstrin homology (PH) domain. There
are 2 members of the evectin family (also called
pleckstrin homology domain containing, family B): evt-1
(also called PLEKHB1) and evt-2 (also called PLEKHB2).
evt-1 is specific to the nervous system, where it is
expressed in photoreceptors and myelinating glia. evt-2
is widely expressed in both neural and nonneural
tissues. Evectins possess a single N-terminal PH domain
and a C-terminal hydrophobic region. evt-1 is thought to
function as a mediator of post-Golgi trafficking in
cells that produce large membrane-rich organelles. It is
a candidate gene for the inherited human retinopathy
autosomal dominant familial exudative vitreoretinopathy
and a susceptibility gene for multiple sclerosis. evt-2
is essential for retrograde endosomal membrane transport
from the plasma membrane (PM) to the Golgi. Two membrane
trafficking pathways pass through recycling endosomes: a
recycling pathway and a retrograde pathway that links
the PM to the Golgi/ER. Its PH domain that is unique in
that it specifically recognizes phosphatidylserine (PS),
but not polyphosphoinositides. PS is an anionic
phospholipid class in eukaryotic biomembranes, is highly
enriched in the PM, and plays key roles in various
physiological processes such as the coagulation cascade,
recruitment and activation of signaling molecules, and
clearance of apoptotic cells. PH domains are only found
in eukaryotes. They share little sequence conservation,
but all have a common fold, which is electrostatically
polarized. PH domains have diverse functions, but in
general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 108
Score = 42.7 bits (101), Expect = 1e-05
Identities = 17/45 (37%), Positives = 26/45 (57%), Gaps = 1/45 (2%)
Query: 101 KEGWLWKQGGRYKSWKRRWFIL-NDKCLYYFEYTTDKEPRGIIPL 144
K GWL +Q K WK+ WF+L +D L Y+E + ++ G I +
Sbjct: 5 KSGWLLRQSTILKRWKKNWFVLYSDGELSYYEDESRRDVEGRINM 49
Score = 39.6 bits (93), Expect = 1e-04
Identities = 15/37 (40%), Positives = 22/37 (59%), Gaps = 1/37 (2%)
Query: 9 KEGWLWKQGGRYKSWKRRWFIL-NDKCLYYFEYTTDK 44
K GWL +Q K WK+ WF+L +D L Y+E + +
Sbjct: 5 KSGWLLRQSTILKRWKKNWFVLYSDGELSYYEDESRR 41
Score = 26.1 bits (58), Expect = 6.7
Identities = 11/29 (37%), Positives = 17/29 (58%), Gaps = 1/29 (3%)
Query: 53 SGRYKSWKRRWFIL-NDKCLYYFEYTTDK 80
S K WK+ WF+L +D L Y+E + +
Sbjct: 13 STILKRWKKNWFVLYSDGELSYYEDESRR 41
>gnl|CDD|241433 cd13279, PH_Cla4_Ste20, Pleckstrin homology (PH) domain. Budding
yeast contain two main p21-activated kinases (PAKs),
Cla4 and Ste20. The yeast Ste20 protein kinase is
involved in pheromone response, though the function of
Ste20 mammalian homologs is unknown. Cla4 is involved in
budding and cytokinesis and interacts with Cdc42, a
GTPase required for polarized cell growth as is Pak.
Cla4 and Ste20 kinases share a function in localizing
cell growth with respect to the septin ring. They both
contain a PH domain, a Cdc42/Rac interactive binding
(CRIB) domain, and a C-terminal Protein Kinase catalytic
(PKc) domain. PH domains have diverse functions, but in
general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 91
Score = 41.1 bits (97), Expect = 3e-05
Identities = 22/83 (26%), Positives = 39/83 (46%), Gaps = 5/83 (6%)
Query: 101 KEGWL-WKQGG-RYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVHDRHKP 158
K GW+ K+ G W +R+ +L ++ L +++ + IPL++I D KP
Sbjct: 3 KSGWVSVKEDGLLSFRWSKRYLVLREQSLDFYKNESSSSASLSIPLKDISNVSRTDL-KP 61
Query: 159 HCFELFTSGFE--FIKACKTDSE 179
+CFE+ + K+D E
Sbjct: 62 YCFEIVRKSSTKSIYISVKSDDE 84
>gnl|CDD|241426 cd13272, PH_INPP4A_INPP4B, Type I inositol 3,4-bisphosphate
4-phosphatase and Type II inositol 3,4-bisphosphate
4-phosphatase Pleckstrin homology (PH) domain. INPP4A
(also called Inositol polyphosphate 4-phosphatase type
I) and INPP4B (also called Inositol polyphosphate
4-phosphatase type II) both catalyze the hydrolysis of
the 4-position phosphate of phosphatidylinositol
3,4-bisphosphate and inositol 1,3,4-trisphosphate. They
differ in that INPP4A additionally catalyzes the
hydrolysis of the 4-position phosphate of inositol
3,4-bisphosphate, while INPP4B catalyzes the hydrolysis
of the 4-position phosphate of inositol
1,4-bisphosphate. They both have a single PH domain
followed by a C2 domain. PH domains have diverse
functions, but in general are involved in targeting
proteins to the appropriate cellular location or in the
interaction with a binding partner. They share little
sequence conservation, but all have a common fold, which
is electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 116
Score = 41.5 bits (98), Expect = 3e-05
Identities = 29/112 (25%), Positives = 45/112 (40%), Gaps = 23/112 (20%)
Query: 100 DKEGWLWKQGGRYKSWKRRWFILNDKCLYYF-EYTTDKEPRGIIPLENIQVREVHDRHKP 158
+++ +++ +K RWF L L+YF EP G+I LEN +V+
Sbjct: 3 ERQMGFFRKSEVFK---ERWFKLRGNLLFYFKSNEPGSEPAGVIVLENCRVQREEPDPGG 59
Query: 159 HCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCLSLH 210
F L F + K YR S + EE+DEWI+ +
Sbjct: 60 FAFSL-----VFK------------DEKK--YRFSCRSEEERDEWIEAIKQA 92
>gnl|CDD|241296 cd01265, PH_TBC1D2A, TBC1 domain family member 2A pleckstrin
homology (PH) domain. TBC1D2A (also called
PARIS-1/Prostate antigen recognized and identified by
SEREX 1 and ARMUS) contains a PH domain and a TBC-type
GTPase catalytic domain. TBC1D2A integrates signaling
between Arf6, Rac1, and Rab7 during junction
disassembly. Activated Rac1 recruits TBC1D2A to locally
inactivate Rab7 via its C-terminal TBC/RabGAP domain and
facilitate E-cadherin degradation in lysosomes. The
TBC1D2A PH domain mediates localization at cell-cell
contacts and coprecipitates with cadherin complexes. PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 101
Score = 40.7 bits (96), Expect = 4e-05
Identities = 20/48 (41%), Positives = 26/48 (54%), Gaps = 4/48 (8%)
Query: 103 GWLWK--QGGRYKSWKRRWFILND-KC-LYYFEYTTDKEPRGIIPLEN 146
G+L K G K+WK RWF+ ++ KC LYY+ D P G I L
Sbjct: 4 GYLNKLETKGLLKTWKSRWFVFDERKCQLYYYRSPQDITPLGSIDLSG 51
Score = 33.4 bits (77), Expect = 0.017
Identities = 16/37 (43%), Positives = 22/37 (59%), Gaps = 4/37 (10%)
Query: 11 GWLWK--QGGRYKSWKRRWFILND-KC-LYYFEYTTD 43
G+L K G K+WK RWF+ ++ KC LYY+ D
Sbjct: 4 GYLNKLETKGLLKTWKSRWFVFDERKCQLYYYRSPQD 40
Score = 32.3 bits (74), Expect = 0.047
Identities = 13/32 (40%), Positives = 18/32 (56%), Gaps = 2/32 (6%)
Query: 54 GRYKSWKRRWFILND-KC-LYYFEYTTDKPFK 83
G K+WK RWF+ ++ KC LYY+ D
Sbjct: 13 GLLKTWKSRWFVFDERKCQLYYYRSPQDITPL 44
>gnl|CDD|241253 cd01218, PH_Phafin2-like, Phafin2 (also called EAPF, FLJ13187,
ZFYVE18 or PLEKHF2) Pleckstrin Homology (PH) domain.
Phafin2 is differentially expressed in the liver cancer
cell and regulates the structure and function of the
endosomes through Rab5-dependent processes. Phafin2
modulates the cell's response to extracellular
stimulation by modulating the receptor density on the
cell surface. Phafin2 contains a PH domain and a FYVE
domain. PH domains have diverse functions, but in
general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 123
Score = 40.7 bits (96), Expect = 6e-05
Identities = 31/109 (28%), Positives = 47/109 (43%), Gaps = 28/109 (25%)
Query: 101 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKE----PRGIIPLENIQVREVHDRH 156
EG L K R K K R F L + L Y +K+ R IIPLE++++ ++ D
Sbjct: 32 GEGVLTKVC-R-KKPKPRQFFLFNDILVYGSIVINKKKYNKQR-IIPLEDVKIEDLEDTG 88
Query: 157 KP-HCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWI 204
+ + +++ + F VY AATA EK EW+
Sbjct: 89 ELKNGWQIISPKKSF-----------------VVY---AATATEKSEWM 117
>gnl|CDD|241277 cd01244, PH_GAP1-like, RAS p21 protein activator (GTPase activating
protein) family pleckstrin homology (PH) domain.
RASAL1, GAP1(m), GAP1(IP4BP), and CAPRI are all members
of the GAP1 family of GTPase-activating proteins. They
contain N-terminal SH2-SH3-SH2 domains, followed by two
C2 domains, a PH domain, a RasGAP domain, and a BTK
domain. With the notable exception of GAP1(m), they all
possess an arginine finger-dependent GAP activity on the
Ras-related protein Rap1. They act as a suppressor of
RAS enhancing the weak intrinsic GTPase activity of RAS
proteins resulting in the inactive GDP-bound form of
RAS, allowing control of cellular proliferation and
differentiation. PH domains share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. PH domains have diverse
functions, but in general are involved in targeting
proteins to the appropriate cellular location or in the
interaction with a binding partner. They share little
sequence conservation, but all have a common fold, which
is electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 107
Score = 39.9 bits (94), Expect = 9e-05
Identities = 20/57 (35%), Positives = 33/57 (57%), Gaps = 7/57 (12%)
Query: 101 KEGWLWK--QGGRY----KSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVRE 151
KEG+L K QG + K++K+R+F L ++ L Y + + +P IPL++I E
Sbjct: 1 KEGYLIKRAQGRKGKLGRKNFKKRYFRLTNEALSYSK-SKGSQPLCSIPLQDILAVE 56
Score = 29.9 bits (68), Expect = 0.34
Identities = 16/47 (34%), Positives = 26/47 (55%), Gaps = 6/47 (12%)
Query: 9 KEGWLWK--QGGRY----KSWKRRWFILNDKCLYYFEYTTDKSACLI 49
KEG+L K QG + K++K+R+F L ++ L Y + + C I
Sbjct: 1 KEGYLIKRAQGRKGKLGRKNFKKRYFRLTNEALSYSKSKGSQPLCSI 47
>gnl|CDD|241480 cd13326, PH_CNK_insect-like, Connector enhancer of KSR (Kinase
suppressor of ras) (CNK) pleckstrin homology (PH)
domain. CNK family members function as protein
scaffolds, regulating the activity and the subcellular
localization of RAS activated RAF. There is a single CNK
protein present in Drosophila and Caenorhabditis elegans
in contrast to mammals which have 3 CNK proteins (CNK1,
CNK2, and CNK3). All of the CNK members contain a
sterile a motif (SAM), a conserved region in CNK (CRIC)
domain, and a PSD-95/DLG-1/ZO-1 (PDZ) domain, and a PH
domain. A CNK2 splice variant CNK2A also has a PDZ
domain-binding motif at its C terminus and Drosophila
CNK (D-CNK) also has a domain known as the
Raf-interacting region (RIR) that mediates binding of
the Drosophila Raf kinase. This cd contains CNKs from
insects, spiders, mollusks, and nematodes. PH domains
have diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They share
little sequence conservation, but all have a common
fold, which is electrostatically polarized. Less than
10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 90
Score = 39.3 bits (92), Expect = 1e-04
Identities = 22/81 (27%), Positives = 37/81 (45%), Gaps = 8/81 (9%)
Query: 102 EGWLW---KQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQV---REVHDR 155
+GWL+ ++G W +RWF+L LY F + +I L V EV R
Sbjct: 2 QGWLYQRRRKGKGGGKWAKRWFVLKGSNLYGFRSQESTKADCVIFLPGFTVSPAPEVKSR 61
Query: 156 HKPHCFELFTSGFEFIKACKT 176
+ F+++ +G F A ++
Sbjct: 62 --KYAFKVYHTGTVFYFAAES 80
Score = 31.5 bits (72), Expect = 0.062
Identities = 15/44 (34%), Positives = 23/44 (52%), Gaps = 4/44 (9%)
Query: 10 EGWLW---KQGGRYKSWKRRWFILNDKCLYYFEYTTD-KSACLI 49
+GWL+ ++G W +RWF+L LY F K+ C+I
Sbjct: 2 QGWLYQRRRKGKGGGKWAKRWFVLKGSNLYGFRSQESTKADCVI 45
Score = 26.5 bits (59), Expect = 3.6
Identities = 8/18 (44%), Positives = 10/18 (55%)
Query: 57 KSWKRRWFILNDKCLYYF 74
W +RWF+L LY F
Sbjct: 16 GKWAKRWFVLKGSNLYGF 33
>gnl|CDD|241432 cd13278, PH_Bud4, Bud4 Pleckstrin homology (PH) domain. Bud4 is an
anillin-like yeast protein involved in the formation and
the disassembly of the double ring structure formed by
the septins during cytokinesis. Bud4 acts with Bud3 and
and in parallel with septin phosphorylation by the
p21-activated kinase Cla4 and the septin-dependent
kinase Gin4. Bud4 is regulated by the cyclin-dependent
protein kinase Cdk1, the master regulator of cell cycle
progression. Bud4 contains an anillin-like domain
followed by a PH domain. In addition there are two
consensus Cdk phosphorylation sites: one at the
N-terminus and one right before the C-terminal PH
domain. Anillins also have C-terminal PH domains. PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 139
Score = 39.9 bits (94), Expect = 2e-04
Identities = 36/126 (28%), Positives = 49/126 (38%), Gaps = 40/126 (31%)
Query: 101 KEGWLWKQGGRYKSWKRRWFILN-DKCLYYFEYTTDKEPRGIIPLENI-------QVREV 152
KEG+L ++GG + W+RR+F L K + Y E T ++PR I L + RE
Sbjct: 21 KEGYLLQEGGDCEYWRRRFFKLQGTKLVAYHEVT--RKPRATINLLKVVDVVDDDDARER 78
Query: 153 HDRHK---------PHCFEL-FTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDE 202
K CF L F +G E I Y A + EEK +
Sbjct: 79 TSSFKRNFTDLVLFEECFRLVFANG-EVI----------------DFY---ADSKEEKAD 118
Query: 203 WIKCLS 208
W L
Sbjct: 119 WYSKLK 124
Score = 36.4 bits (85), Expect = 0.003
Identities = 11/23 (47%), Positives = 17/23 (73%)
Query: 9 KEGWLWKQGGRYKSWKRRWFILN 31
KEG+L ++GG + W+RR+F L
Sbjct: 21 KEGYLLQEGGDCEYWRRRFFKLQ 43
>gnl|CDD|241447 cd13293, PH_CpORP2-like, Cryptosporidium-like Oxysterol binding
protein related protein 2 Pleckstrin homology (PH)
domain. There are 2 types of ORPs found in
Cryptosporidium: CpORP1 and CpORP2. Cryptosporium
differs from other apicomplexans like Plasmodium,
Toxoplasma, and Eimeria which possess only a single
long-type ORP consisting of an N-terminal PH domain
followed by a C-terminal ligand binding (LB) domain.
CpORP2 is like this, but CpORP1 differs and has a
truncated N-terminus resulting in only having a LB
domain present. The exact functions of these proteins
are largely unknown though CpORP1 is thought to be
involved in lipid transport across the parasitophorous
vacuole membrane. Oxysterol binding proteins are a
multigene family that is conserved in yeast, flies,
worms, mammals and plants. In general OSBPs and ORPs
have been found to be involved in the transport and
metabolism of cholesterol and related lipids in
eukaryotes. They all contain a C-terminal oxysterol
binding domain, and most contain an N-terminal PH
domain. OSBP PH domains bind to membrane
phosphoinositides and thus likely play an important role
in intracellular targeting. They are members of the
oxysterol binding protein (OSBP) family which includes
OSBP, OSBP-related proteins (ORP), Goodpasture antigen
binding protein (GPBP), and Four phosphate adaptor
protein 1 (FAPP1). They have a wide range of purported
functions including sterol transport, cell cycle
control, pollen development and vessicle transport from
Golgi recognize both PI lipids and ARF proteins. PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 88
Score = 38.5 bits (90), Expect = 2e-04
Identities = 19/53 (35%), Positives = 26/53 (49%), Gaps = 1/53 (1%)
Query: 102 EGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVHD 154
EG+L K + SWK R+FIL L Y + +G I L+ +R V D
Sbjct: 2 EGYLKKWTNIFNSWKPRYFILYPGILCYSK-QKGGPKKGTIHLKICDIRLVPD 53
Score = 36.2 bits (84), Expect = 0.002
Identities = 13/28 (46%), Positives = 16/28 (57%)
Query: 10 EGWLWKQGGRYKSWKRRWFILNDKCLYY 37
EG+L K + SWK R+FIL L Y
Sbjct: 2 EGYLKKWTNIFNSWKPRYFILYPGILCY 29
Score = 28.8 bits (65), Expect = 0.56
Identities = 9/16 (56%), Positives = 10/16 (62%)
Query: 58 SWKRRWFILNDKCLYY 73
SWK R+FIL L Y
Sbjct: 14 SWKPRYFILYPGILCY 29
>gnl|CDD|241290 cd01259, PH_APBB1IP, Amyloid beta (A4) Precursor protein-Binding,
family B, member 1 Interacting Protein pleckstrin
homology (PH) domain. APBB1IP consists of a
Ras-associated (RA) domain, a PH domain, a
family-specific BPS region, and a C-terminal SH2 domain.
Grb7, Grb10 and Grb14 are paralogs that are also present
in this hierarchy. These adapter proteins bind a variety
of receptor tyrosine kinases, including the insulin and
insulin-like growth factor-1 (IGF1) receptors. Grb10 and
Grb14 are important tissue-specific negative regulators
of insulin and IGF1 signaling based and may contribute
to type 2 (non-insulin-dependent) diabetes in humans.
RA-PH function as a single structural unit and is
dimerized via a helical extension of the PH domain. The
PH domain here are proposed to bind phosphoinositides
non-cannonically ahd are unlikely to bind an activated
GTPase. The tandem RA-PH domains are present in a second
adapter-protein family, MRL proteins, Caenorhabditis
elegans protein MIG-1012, the mammalian proteins RIAM
and lamellipodin and the Drosophila melanogaster protein
Pico12, all of which are Ena/VASP-binding proteins
involved in actin-cytoskeleton rearrangement. PH domains
have diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They share
little sequence conservation, but all have a common
fold, which is electrostatically polarized. Less than
10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 124
Score = 38.8 bits (91), Expect = 3e-04
Identities = 20/47 (42%), Positives = 29/47 (61%), Gaps = 2/47 (4%)
Query: 99 PDKEGWLW-KQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPL 144
P+ EG+L+ K+ G+ KSWK+R+F+L LYY KE R + L
Sbjct: 6 PEIEGFLYLKEDGK-KSWKKRYFVLRASGLYYSPKGKSKESRDLQCL 51
Score = 35.3 bits (82), Expect = 0.006
Identities = 16/32 (50%), Positives = 24/32 (75%), Gaps = 2/32 (6%)
Query: 7 PDKEGWLW-KQGGRYKSWKRRWFILNDKCLYY 37
P+ EG+L+ K+ G+ KSWK+R+F+L LYY
Sbjct: 6 PEIEGFLYLKEDGK-KSWKKRYFVLRASGLYY 36
Score = 29.5 bits (67), Expect = 0.58
Identities = 10/17 (58%), Positives = 13/17 (76%)
Query: 57 KSWKRRWFILNDKCLYY 73
KSWK+R+F+L LYY
Sbjct: 20 KSWKKRYFVLRASGLYY 36
>gnl|CDD|241531 cd13380, PH_Skap1, Src kinase-associated phosphoprotein 1
Pleckstrin homology (PH) domain. Adaptor protein Skap1
(also called Skap55/Src kinase-associated phosphoprotein
of 55 kDa) and its partner, ADAP (adhesion and
degranulation promoting adapter protein) help reorganize
the cytoskeleton and/or promote integrin-mediated
adhesion upon immunoreceptor activation. Skap1 is also
involved in T Cell Receptor (TCR)-induced RapL-Rap1
complex formation and LFA-1 activation. Skap1 has an
N-terminal coiled-coil conformation which is proposed to
be involved in homodimer formation, a central PH domain
and a C-terminal SH3 domain that associates with ADAP.
The Skap1 PH domain plays a role in controlling integrin
function via recruitment of ADAP-SKAP complexes to
integrins as well as in controlling the ability of ADAP
to interact with the CBM signalosome and regulate
NF-kappaB. SKAP1 is necessary for RapL binding to
membranes in a PH domain-dependent manner and the PI3K
pathway. Skap adaptor proteins couple receptors to
cytoskeletal rearrangements. Skap55/Skap1, Skap2, and
Skap-homology (Skap-hom) have an N-terminal coiled-coil
conformation, a central PH domain and a C-terminal SH3
domain. Their PH domains bind 3'-phosphoinositides as
well as directly affecting targets such as in Skap55
where it directly affecting integrin regulation by ADAP
and NF-kappaB activation or in Skap-hom where the
dimerization and PH domains comprise a
3'-phosphoinositide-gated molecular switch that controls
ruffle formation. PH domains have diverse functions, but
in general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 106
Score = 38.4 bits (89), Expect = 3e-04
Identities = 22/89 (24%), Positives = 42/89 (47%), Gaps = 11/89 (12%)
Query: 101 KEGWLWKQGGRYK----SWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREV---- 152
K+G+L K+ + W++RW +L + YY+ K+P+G +++ +
Sbjct: 3 KQGYLEKRSKDHGFFGSEWQKRWCVLTTRAFYYYANEKSKQPKGGFLIKDSLAQMAPHLR 62
Query: 153 HDRHKPHCFELFTSG---FEFIKACKTDS 178
D + CFEL T +EF A +++
Sbjct: 63 KDSRRDSCFELTTPNQRTYEFTAASPSEA 91
>gnl|CDD|241420 cd13266, PH_Skap_family, Src kinase-associated phosphoprotein
family Pleckstrin homology (PH) domain. Skap adaptor
proteins couple receptors to cytoskeletal
rearrangements. Src kinase-associated phosphoprotein of
55 kDa (Skap55)/Src kinase-associated phosphoprotein 1
(Skap1), Skap2, and Skap-homology (Skap-hom) have an
N-terminal coiled-coil conformation, a central PH domain
and a C-terminal SH3 domain. Their PH domains bind
3'-phosphoinositides as well as directly affecting
targets such as in Skap55 where it directly affecting
integrin regulation by ADAP and NF-kappaB activation or
in Skap-hom where the dimerization and PH domains
comprise a 3'-phosphoinositide-gated molecular switch
that controls ruffle formation. PH domains are only
found in eukaryotes. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. PH domains have diverse
functions, but in general are involved in targeting
proteins to the appropriate cellular location or in the
interaction with a binding partner. They share little
sequence conservation, but all have a common fold, which
is electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 106
Score = 37.1 bits (86), Expect = 0.001
Identities = 22/94 (23%), Positives = 39/94 (41%), Gaps = 23/94 (24%)
Query: 115 WKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREV----HDRHKPHCFELFTSGFEF 170
W++RW +L++ YY+ DK+ +G ++ + R D K CFE+
Sbjct: 21 WQKRWCVLSNTAFYYYGSEKDKQQKGEFAIDGYRARMNPTLRKDSKKDCCFEISAPD--- 77
Query: 171 IKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWI 204
VY+ +AA+ +E EW+
Sbjct: 78 ----------------KRVYQFTAASPKEAREWV 95
>gnl|CDD|241288 cd01257, PH_IRS, Insulin receptor substrate (IRS) pleckstrin
homology (PH) domain. Insulin receptor substrate (IRS)
molecules are mediators in insulin signaling and play a
role in maintaining basic cellular functions such as
growth and metabolism. They act as docking proteins
between the insulin receptor and a complex network of
intracellular signaling molecules containing Src
homology 2 (SH2) domains. Four members (IRS-1, IRS-2,
IRS-3, IRS-4) of this family have been identified that
differ as to tissue distribution, subcellular
localization, developmental expression, binding to the
insulin receptor, and interaction with SH2
domain-containing proteins. IRS molecules have an
N-terminal PH domain, followed by an IRS-like PTB domain
which has a PH-like fold. PH domains have diverse
functions, but in general are involved in targeting
proteins to the appropriate cellular location or in the
interaction with a binding partner. They share little
sequence conservation, but all have a common fold, which
is electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.cytoskeletal
associated molecules, and in lipid associated enzymes.
Length = 106
Score = 36.5 bits (85), Expect = 0.001
Identities = 28/118 (23%), Positives = 49/118 (41%), Gaps = 35/118 (29%)
Query: 101 KEGWLWKQGGRYKSWKRRWFILNDK------CLYYFE----YTTDKEPRGIIPLEN-IQV 149
K G+L K K+ ++R+F+L + L Y+E + + EP+ +IPL + +
Sbjct: 5 KSGYLKKL----KTMRKRYFVLRAESHGGPARLEYYENEKKFRRNAEPKRVIPLSSCFNI 60
Query: 150 REVHDRHKPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCL 207
+ D H L+T K + + A + EE+DEW + L
Sbjct: 61 NKRADAKHKHLIALYT--------------------KDECFGLVAESEEEQDEWYQAL 98
>gnl|CDD|241540 cd13389, PH1_FGD5_FGD6, FYVE, RhoGEF and PH domain
containing/faciogenital dysplasia proteins 5 and 6
Pleckstrin Homology (PH) domain. FGD5 regulates
promotes angiogenesis of vascular endothelial growth
factor (VEGF) in vascular endothelial cells, including
network formation, permeability, directional movement,
and proliferation. The specific function of FGD6 is
unknown. In general, FGDs have a RhoGEF (DH) domain,
followed by a PH domain, a FYVE domain and a C-terminal
PH domain. All FGDs are guanine nucleotide exchange
factors that activate the Rho GTPase Cdc42, an important
regulator of membrane trafficking. The RhoGEF domain is
responsible for GEF catalytic activity, while the PH
domain is involved in intracellular targeting of the DH
domain. PH domains have diverse functions, but in
general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 125
Score = 36.9 bits (86), Expect = 0.002
Identities = 27/112 (24%), Positives = 44/112 (39%), Gaps = 26/112 (23%)
Query: 101 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPR----GIIPLENIQVREVHDRH 156
KEG L K K + R+ L + L Y + +PL ++V D
Sbjct: 16 KEGELMKVSR--KEMQPRYLFLFNDVLLYTTPVQSGVGKYKLKNELPLSGMKVSLPEDEE 73
Query: 157 KPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCLS 208
+ F++ ++ F +SA++AEE+DEW+K LS
Sbjct: 74 YSNEFQIESTKRSFT--------------------LSASSAEERDEWVKALS 105
>gnl|CDD|241421 cd13267, PH_DOCK-D, Dedicator of cytokinesis-D subfamily Pleckstrin
homology (PH) domain. DOCK-D subfamily (also called
Zizimin subfamily) consists of Dock9/Zizimin1,
Dock10/Zizimin3, and Dock11/Zizimin2. DOCK-D has a
N-terminal DUF3398 domain, a PH-like domain, a Dock
Homology Region 1, DHR1 (also called CZH1), a C2 domain,
and a C-terminal DHR2 domain (also called CZH2).
Zizimin1 is enriched in the brain, lung, and kidney;
zizimin2 is found in B and T lymphocytes, and zizimin3
is enriched in brain, lung, spleen and thymus. Zizimin1
functions in autoinhibition and membrane targeting.
Zizimin2 is an immune-related and age-regulated guanine
nucleotide exchange factor, which facilitates filopodial
formation through activation of Cdc42, which results in
activation of cell migration. No function has been
determined for Zizimin3 to date. The N-terminal half of
zizimin1 binds to the GEF domain through three distinct
areas, including CZH1, to inhibit the interaction with
Cdc42. In addition its PH domain binds phosphoinositides
and mediates zizimin1 membrane targeting. DOCK is a
family of proteins involved in intracellular signalling
networks. They act as guanine nucleotide exchange
factors for small G proteins of the Rho family, such as
Rac and Cdc42. There are 4 subfamilies of DOCK family
proteins based on their sequence homology: A-D. PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 125
Score = 36.5 bits (85), Expect = 0.002
Identities = 37/122 (30%), Positives = 54/122 (44%), Gaps = 36/122 (29%)
Query: 101 KEGWLWK---QGGRY-----KSWKRRWFILN---DKCLYYFEYTTD---KEPRGIIPLEN 146
KEG+L+K + KS+KRR+F L D Y E+ D KE +G I L++
Sbjct: 8 KEGYLYKGPENSSMFISLAMKSFKRRFFHLKQLVDGS-YILEFYKDEKSKEAKGTIYLDS 66
Query: 147 -IQVREVHDRHKPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIK 205
V + R K CFEL ++ +GK Y ++A + E D+WI
Sbjct: 67 CTGVVQNSKRRK-FCFEL-----------------RMQDGK--SYVLAAESESEMDDWIS 106
Query: 206 CL 207
L
Sbjct: 107 KL 108
>gnl|CDD|241446 cd13292, PH_Osh1p_Osh2p_yeast, Yeast oxysterol binding protein
homologs 1 and 2 Pleckstrin homology (PH) domain. Yeast
Osh1p is proposed to function in postsynthetic sterol
regulation, piecemeal microautophagy of the nucleus, and
cell polarity establishment. Yeast Osh2p is proposed to
function in sterol metabolism and cell polarity
establishment. Both Osh1p and Osh2p contain 3 N-terminal
ankyrin repeats, a PH domain, a FFAT motif (two
phenylalanines in an acidic tract), and a C-terminal
OSBP-related domain. OSBP andOsh1p PH domains
specifically localize to the Golgi apparatus in a
PtdIns4P-dependent manner. Oxysterol binding proteins
are a multigene family that is conserved in yeast,
flies, worms, mammals and plants. In general OSBPs and
ORPs have been found to be involved in the transport and
metabolism of cholesterol and related lipids in
eukaryotes. They all contain a C-terminal oxysterol
binding domain, and most contain an N-terminal PH
domain. OSBP PH domains bind to membrane
phosphoinositides and thus likely play an important role
in intracellular targeting. They are members of the
oxysterol binding protein (OSBP) family which includes
OSBP, OSBP-related proteins (ORP), Goodpasture antigen
binding protein (GPBP), and Four phosphate adaptor
protein 1 (FAPP1). They have a wide range of purported
functions including sterol transport, cell cycle
control, pollen development and vessicle transport from
Golgi recognize both PI lipids and ARF proteins. PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 103
Score = 35.7 bits (83), Expect = 0.002
Identities = 21/67 (31%), Positives = 33/67 (49%), Gaps = 4/67 (5%)
Query: 99 PDKEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTD--KEPRGIIPLENIQVREVHDRH 156
P +G+L K K +K RWF+L D L Y+ + D RG I ++N ++ D
Sbjct: 2 PTMKGYLKKWTNYAKGYKTRWFVLEDGVLSYYRHQDDEGSACRGSINMKNARLV--SDPS 59
Query: 157 KPHCFEL 163
+ FE+
Sbjct: 60 EKLRFEV 66
Score = 27.3 bits (61), Expect = 2.5
Identities = 17/42 (40%), Positives = 24/42 (57%), Gaps = 1/42 (2%)
Query: 7 PDKEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDK-SAC 47
P +G+L K K +K RWF+L D L Y+ + D+ SAC
Sbjct: 2 PTMKGYLKKWTNYAKGYKTRWFVLEDGVLSYYRHQDDEGSAC 43
>gnl|CDD|241431 cd13277, PH_Bem3, Bud emergence protein 3 (Bem3) Pleckstrin
homology (PH) domain. Bud emergence in Saccharomyces
cerevisiae involves cell cycle-regulated reorganizations
of cortical cytoskeletal elements and requires the
action of the Rho-type GTPase Cdc42. Bem3 contains a
RhoGAP domain and a PH domain. Though Bem3 and Bem2 both
contain a RhoGAP, but only Bem3 is able to stimulate the
hydrolysis of GTP on Cdc42. Bem3 is thought to be the
GAP for Cdc42. PH domains have diverse functions, but in
general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 111
Score = 36.1 bits (84), Expect = 0.003
Identities = 30/116 (25%), Positives = 47/116 (40%), Gaps = 21/116 (18%)
Query: 101 KEGWLWKQG----GRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVH--- 153
KEG+L K+ G WK R+ +L+ L +E + + I L N Q+
Sbjct: 5 KEGYLLKRRKKTLGSTGGWKLRYGVLDGNILELYE-SRGGQLLESIKLRNAQIERQPNLP 63
Query: 154 -DRHKPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCLS 208
D++ GF + K+ T Y + A T +E+DEW+ LS
Sbjct: 64 DDKYG------TRHGFLINEHKKSGLSST------TKYYLCAETDKERDEWVSALS 107
Score = 30.3 bits (69), Expect = 0.26
Identities = 12/35 (34%), Positives = 18/35 (51%), Gaps = 4/35 (11%)
Query: 9 KEGWLWKQG----GRYKSWKRRWFILNDKCLYYFE 39
KEG+L K+ G WK R+ +L+ L +E
Sbjct: 5 KEGYLLKRRKKTLGSTGGWKLRYGVLDGNILELYE 39
Score = 26.9 bits (60), Expect = 3.9
Identities = 6/18 (33%), Positives = 10/18 (55%)
Query: 58 SWKRRWFILNDKCLYYFE 75
WK R+ +L+ L +E
Sbjct: 22 GWKLRYGVLDGNILELYE 39
>gnl|CDD|241272 cd01239, PH_PKD, Protein kinase D (PKD/PKCmu) pleckstrin homology
(PH) domain. Protein Kinase C family is composed of
three members, PKD1 (PKCmu), PKD2 and PKD3 (PKCnu). Like
the C-type protein kinases (PKCs), PKDs are activated by
diacylglycerol (DAG). They are involved in vesicular
transport, cell proliferation, survival, migration and
immune responses. PKD consists of tandem C1 domains,
followed by a PH domain and a kinase domain. While the
PKD PH domain has not been shown to bind phosphorylated
inositol lipids and is not required for membrane
translocation, it is required for nuclear export. PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 127
Score = 36.2 bits (84), Expect = 0.003
Identities = 23/80 (28%), Positives = 33/80 (41%), Gaps = 14/80 (17%)
Query: 101 KEGWLW----KQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENI------QVR 150
KEGW+ K R KR ++ L+ KC+ F+ T IPL I
Sbjct: 10 KEGWMVHYTNKDPQR----KRHYWRLDTKCITLFQNETTSRYYKEIPLSEILAVEPADNP 65
Query: 151 EVHDRHKPHCFELFTSGFEF 170
+ PHCFE+ T+ +
Sbjct: 66 SLPPGTPPHCFEIKTANLVY 85
>gnl|CDD|241429 cd13275, PH_M-RIP, Myosin phosphatase-RhoA Interacting Protein
Pleckstrin homology (PH) domain. M-RIP is proposed to
play a role in myosin phosphatase regulation by RhoA.
M-RIP contains 2 PH domains followed by a Rho binding
domain (Rho-BD), and a C-terminal myosin binding
subunit (MBS) binding domain (MBS-BD). The amino
terminus of M-RIP with its adjacent PH domains and
polyproline motifs mediates binding to both actin and
Galpha. M-RIP brings RhoA and MBS into close proximity
where M-RIP can target RhoA to the myosin phosphatase
complex to regulate the myosin phosphorylation state.
M-RIP does this via its C-terminal coiled-coil domain
which interacts with the MBS leucine zipper domain of
myosin phosphatase, while its Rho-BD, directly binds
RhoA in a nucleotide-independent manner. PH domains
have diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They
share little sequence conservation, but all have a
common fold, which is electrostatically polarized. Less
than 10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved
across all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 103
Score = 35.4 bits (82), Expect = 0.004
Identities = 14/30 (46%), Positives = 18/30 (60%), Gaps = 1/30 (3%)
Query: 9 KEGWLWKQGGRYKSWKRRWFILNDKCLYYF 38
K+GWL KQ WK+ WF+L D L Y+
Sbjct: 1 KKGWLMKQDED-GEWKKHWFVLRDASLRYY 29
Score = 35.4 bits (82), Expect = 0.004
Identities = 14/30 (46%), Positives = 18/30 (60%), Gaps = 1/30 (3%)
Query: 101 KEGWLWKQGGRYKSWKRRWFILNDKCLYYF 130
K+GWL KQ WK+ WF+L D L Y+
Sbjct: 1 KKGWLMKQDED-GEWKKHWFVLRDASLRYY 29
Score = 25.7 bits (57), Expect = 9.7
Identities = 8/16 (50%), Positives = 11/16 (68%)
Query: 59 WKRRWFILNDKCLYYF 74
WK+ WF+L D L Y+
Sbjct: 14 WKKHWFVLRDASLRYY 29
>gnl|CDD|241438 cd13284, PH_OSBP_ORP4, Human Oxysterol binding protein and
OSBP-related protein 4 Pleckstrin homology (PH) domain.
Human OSBP is proposed to function is sterol-dependent
regulation of ERK dephosphorylation and sphingomyelin
synthesis as well as modulation of insulin signaling
and hepatic lipogenesis. It contains a N-terminal PH
domain, a FFAT motif (two phenylalanines in an acidic
tract), and a C-terminal OSBP-related domain. OSBPs and
Osh1p PH domains specifically localize to the Golgi
apparatus in a PtdIns4P-dependent manner. ORP4 is
proposed to function in Vimentin-dependent sterol
transport and/or signaling. Human ORP4 has 2 forms, a
long (ORP4L) and a short (ORP4S). ORP4L contains a
N-terminal PH domain, a FFAT motif (two phenylalanines
in an acidic tract), and a C-terminal OSBP-related
domain. ORP4S is truncated and contains only an
OSBP-related domain. Oxysterol binding proteins are a
multigene family that is conserved in yeast, flies,
worms, mammals and plants. They all contain a
C-terminal oxysterol binding domain, and most contain
an N-terminal PH domain. OSBP PH domains bind to
membrane phosphoinositides and thus likely play an
important role in intracellular targeting. They are
members of the oxysterol binding protein (OSBP) family
which includes OSBP, OSBP-related proteins (ORP),
Goodpasture antigen binding protein (GPBP), and Four
phosphate adaptor protein 1 (FAPP1). They have a wide
range of purported functions including sterol
transport, cell cycle control, pollen development and
vessicle transport from Golgi recognize both PI lipids
and ARF proteins. PH domains have diverse functions,
but in general are involved in targeting proteins to
the appropriate cellular location or in the interaction
with a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved
across all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 99
Score = 35.0 bits (81), Expect = 0.004
Identities = 12/30 (40%), Positives = 19/30 (63%)
Query: 9 KEGWLWKQGGRYKSWKRRWFILNDKCLYYF 38
+GWL K K ++RRWF+L++ L Y+
Sbjct: 1 FKGWLLKWTNYLKGYQRRWFVLSNGLLSYY 30
Score = 35.0 bits (81), Expect = 0.004
Identities = 12/30 (40%), Positives = 19/30 (63%)
Query: 101 KEGWLWKQGGRYKSWKRRWFILNDKCLYYF 130
+GWL K K ++RRWF+L++ L Y+
Sbjct: 1 FKGWLLKWTNYLKGYQRRWFVLSNGLLSYY 30
Score = 26.2 bits (58), Expect = 6.5
Identities = 8/18 (44%), Positives = 14/18 (77%)
Query: 57 KSWKRRWFILNDKCLYYF 74
K ++RRWF+L++ L Y+
Sbjct: 13 KGYQRRWFVLSNGLLSYY 30
>gnl|CDD|241255 cd01220, PH1_FARP1-like, FERM, RhoGEF and pleckstrin
domain-containing protein 1 and related proteins
Pleckstrin Homology (PH) domain, repeat 1. Members here
include FARP1 (also called Chondrocyte-derived
ezrin-like protein; PH domain-containing family C member
2), FARP2 (also called FIR/FERM domain including RhoGEF;
FGD1-related Cdc42-GEF/FRG), and FARP6 (also called Zinc
finger FYVE domain-containing protein 24). They are
members of the Dbl family guanine nucleotide exchange
factors (GEFs) which are upstream positive regulators of
Rho GTPases. Little is known about FARP1 and FARP6,
though FARP1 has increased expression in differentiated
chondrocytes. FARP2 is thought to regulate neurite
remodeling by mediating the signaling pathways from
membrane proteins to Rac. It is found in brain, lung,
and testis, as well as embryonic hippocampal and
cortical neurons. FARP1 and FARP2 are composed of a
N-terminal FERM domain, a proline-rich (PR) domain,
Dbl-homology (DH), and two C-terminal PH domains. FARP6
is composed of Dbl-homology (DH), and two C-terminal PH
domains separated by a FYVE domain. This hierarchy
contains the first PH repeat. PH domains have diverse
functions, but in general are involved in targeting
proteins to the appropriate cellular location or in the
interaction with a binding partner. They share little
sequence conservation, but all have a common fold, which
is electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 123
Score = 35.0 bits (81), Expect = 0.007
Identities = 29/117 (24%), Positives = 46/117 (39%), Gaps = 35/117 (29%)
Query: 101 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKEP--------RGIIPLENIQVREV 152
+EG L K K ++R F L L Y T + P G +PL + V E
Sbjct: 24 REGCLLKLSK--KGLQQRMFFLFSDVLIY----TSRGPTSTLQFKVHGQLPLRGLMVEES 77
Query: 153 -HDRHKPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCLS 208
+ PHCF ++ G + ++A++ EEK+ W++ LS
Sbjct: 78 EPEMGVPHCFTIY--------------------GGNRALTVAASSEEEKERWLEDLS 114
>gnl|CDD|241278 cd01247, PH_FAPP1_FAPP2, Four phosphate adaptor protein 1 and 2
Pleckstrin homology (PH) domain. Human FAPP1 (also
called PLEKHA3/Pleckstrin homology domain-containing,
family A member 3) regulates secretory transport from
the trans-Golgi network to the plasma membrane. It is
recruited through binding of PH domain to
phosphatidylinositol 4-phosphate (PtdIns(4)P) and a
small GTPase ADP-ribosylation factor 1 (ARF1). These
two binding sites have little overlap the FAPP1 PH
domain to associate with both ligands simultaneously
and independently. FAPP1 has a N-terminal PH domain
followed by a short proline-rich region. FAPP1 is a
member of the oxysterol binding protein (OSBP) family
which includes OSBP, OSBP-related proteins (ORP), and
Goodpasture antigen binding protein (GPBP). They have a
wide range of purported functions including sterol
transport, cell cycle control, pollen development and
vessicle transport from Golgi recognize both PI lipids
and ARF proteins. FAPP2 (also called PLEKHA8/Pleckstrin
homology domain-containing, family A member 8), a
member of the Glycolipid lipid transfer protein(GLTP)
family has an N-terminal PH domain that targets the TGN
and C-terminal GLTP domain. FAPP2 functions to traffic
glucosylceramide (GlcCer) which is made in the Golgi.
It's interaction with vesicle-associated membrane
protein-associated protein (VAP) could be a means of
regulation. Some FAPP2s share the FFAT-like motifs
found in GLTP. PH domains have diverse functions, but
in general are involved in targeting proteins to the
appropriate cellular location or in the interaction
with a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved
across all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 100
Score = 34.6 bits (80), Expect = 0.007
Identities = 12/29 (41%), Positives = 17/29 (58%)
Query: 10 EGWLWKQGGRYKSWKRRWFILNDKCLYYF 38
EG L+K W+ RWF+L+D L Y+
Sbjct: 2 EGVLYKWTNYLSGWQPRWFVLDDGVLSYY 30
Score = 34.6 bits (80), Expect = 0.007
Identities = 12/29 (41%), Positives = 17/29 (58%)
Query: 102 EGWLWKQGGRYKSWKRRWFILNDKCLYYF 130
EG L+K W+ RWF+L+D L Y+
Sbjct: 2 EGVLYKWTNYLSGWQPRWFVLDDGVLSYY 30
Score = 27.7 bits (62), Expect = 2.0
Identities = 8/16 (50%), Positives = 12/16 (75%)
Query: 59 WKRRWFILNDKCLYYF 74
W+ RWF+L+D L Y+
Sbjct: 15 WQPRWFVLDDGVLSYY 30
>gnl|CDD|241415 cd13261, PH_RasGRF1_2, Ras-specific guanine nucleotide-releasing
factors 1 and 2 Pleckstrin homology (PH) domain.
RasGRF1 (also called GRF1; CDC25Mm/Ras-specific
nucleotide exchange factor CDC25; GNRP/Guanine
nucleotide-releasing protein) and RasGRF2 (also called
GRF2; Ras guanine nucleotide exchange factor 2) are a
family of guanine nucleotide exchange factors (GEFs).
They both promote the exchange of Ras-bound GDP by GTP,
thereby regulating the RAS signaling pathway. RasGRF1
and RasGRF2 form homooligomers and heterooligomers. GRF1
has 3 isoforms and GRF2 has 2 isoforms. The longest
isoforms of RasGRF1 and RasGRF2 contain the following
domains: a Rho-GEF domain sandwiched between 2 PH
domains, IQ domains, a REM (Ras exchanger motif) domain,
and a Ras-GEF domainwhich gives them the capacity to
activate both Ras and Rac GTPases in response to signals
from a variety of neurotransmitter receptors. Their IQ
domains allow them to act as calcium sensors to mediate
the actions of NMDA-type and calcium-permeable AMPA-type
glutamate receptors. GRF1 also mediates the action of
dopamine receptors that signal through cAMP. GRF1 and
GRF2 play strikingly different roles in regulating MAP
kinase family members, neuronal synaptic plasticity,
specific forms of learning and memory, and behavioral
responses to psychoactive drugs. PH domains have diverse
functions, but in general are involved in targeting
proteins to the appropriate cellular location or in the
interaction with a binding partner. They share little
sequence conservation, but all have a common fold, which
is electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 136
Score = 35.0 bits (81), Expect = 0.008
Identities = 15/45 (33%), Positives = 22/45 (48%)
Query: 101 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLE 145
+ G+L K+ W +WF L L+YFE + P G+ LE
Sbjct: 7 RRGYLSKKSSDNSKWHTKWFALYQNLLFYFENESSSRPSGLYLLE 51
Score = 28.1 bits (63), Expect = 2.1
Identities = 11/32 (34%), Positives = 16/32 (50%)
Query: 9 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFEY 40
+ G+L K+ W +WF L L+YFE
Sbjct: 7 RRGYLSKKSSDNSKWHTKWFALYQNLLFYFEN 38
Score = 27.0 bits (60), Expect = 5.4
Identities = 8/18 (44%), Positives = 10/18 (55%)
Query: 59 WKRRWFILNDKCLYYFEY 76
W +WF L L+YFE
Sbjct: 21 WHTKWFALYQNLLFYFEN 38
>gnl|CDD|241532 cd13381, PH_Skap-hom_Skap2, Src kinase-associated phosphoprotein
homolog and Skap 2 Pleckstrin homology (PH) domain.
Adaptor protein Skap-hom, a homolog of Skap55, which
interacts with actin and with ADAP (adhesion and
degranulation promoting adapter protein) undergoes
tyrosine phosphorylation in response to plating of bone
marrow-derived macrophages on fibronectin. Skap-hom has
an N-terminal coiled-coil conformation that is involved
in homodimer formation, a central PH domain and a
C-terminal SH3 domain that associates with ADAP. The
Skap-hom PH domain regulates intracellular targeting;
its interaction with the DM domain inhibits Skap-hom
actin-based ruffles in macrophages and its binding to
3'-phosphoinositides reverses this autoinhibition. The
Skap-hom PH domain binds PI[3,4]P2 and PI[3,4,5]P3, but
not to PI[3]P, PI[5]P, or PI[4,5]P2. Skap2 is a
downstream target of Heat shock transcription factor 4
(HSF4) and functions in the regulation of actin
reorganization during lens differentiation. It is
thought that SKAP2 anchors the complex of tyrosine
kinase adaptor protein 2 (NCK20/focal adhesion to
fibroblast growth factor receptors at the lamellipodium
in lens epithelial cells. Skap2 has an N-terminal
coiled-coil conformation which interacts with the SH2
domain of NCK2, a central PH domain and a C-terminal SH3
domain that associates with ADAP (adhesion and
degranulation promoting adapter protein)/FYB (the Fyn
binding protein). Skap2 PH domain binds to membrane
lipids. Skap adaptor proteins couple receptors to
cytoskeletal rearrangements. Src kinase-associated
phosphoprotein of 55 kDa (Skap55)/Src kinase-associated
phosphoprotein 1 (Skap1), Skap2, and Skap-hom have an
N-terminal coiled-coil conformation, a central PH domain
and a C-terminal SH3 domain. Their PH domains bind
3'-phosphoinositides as well as directly affecting
targets such as in Skap55 where it directly affecting
integrin regulation by ADAP and NF-kappaB activation or
in Skap-hom where the dimerization and PH domains
comprise a 3'-phosphoinositide-gated molecular switch
that controls ruffle formation. PH domains have diverse
functions, but in general are involved in targeting
proteins to the appropriate cellular location or in the
interaction with a binding partner. They share little
sequence conservation, but all have a common fold, which
is electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 106
Score = 34.1 bits (78), Expect = 0.011
Identities = 23/95 (24%), Positives = 41/95 (43%), Gaps = 23/95 (24%)
Query: 115 WKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVH----DRHKPHCFELFTSGFEF 170
W++RW L+ YY+ DK+ +G ++ VR + D K CFE+
Sbjct: 21 WQKRWCALSKTVFYYYGSDKDKQQKGEFAIDGYTVRMNNTLRKDAKKDCCFEI------- 73
Query: 171 IKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIK 205
D +Y+ +AA+ +E +EW++
Sbjct: 74 ---SAPDKR---------IYQFTAASPKEAEEWVQ 96
>gnl|CDD|241445 cd13291, PH_ORP10_ORP11, Human Oxysterol binding protein (OSBP)
related proteins 10 and 11 (ORP10 and ORP11) Pleckstrin
homology (PH) domain. Human ORP10 is involvedt in
intracellular transport or organelle positioning and is
proposed to function as a regulator of cellular lipid
metabolism. Human ORP11 localizes at the Golgi-late
endosome interface and is thought to form a dimer with
ORP9 functioning as an intracellular lipid sensor or
transporter. Both ORP10 and ORP11 contain a N-terminal
PH domain, a FFAT motif (two phenylalanines in an acidic
tract), and a C-terminal OSBP-related domain. Oxysterol
binding proteins are a multigene family that is
conserved in yeast, flies, worms, mammals and plants. In
general OSBPs and ORPs have been found to be involved in
the transport and metabolism of cholesterol and related
lipids in eukaryotes. They all contain a C-terminal
oxysterol binding domain, and most contain an N-terminal
PH domain. OSBP PH domains bind to membrane
phosphoinositides and thus likely play an important role
in intracellular targeting. They are members of the
oxysterol binding protein (OSBP) family which includes
OSBP, OSBP-related proteins (ORP), Goodpasture antigen
binding protein (GPBP), and Four phosphate adaptor
protein 1 (FAPP1). They have a wide range of purported
functions including sterol transport, cell cycle
control, pollen development and vessicle transport from
Golgi recognize both PI lipids and ARF proteins. PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 107
Score = 34.2 bits (79), Expect = 0.012
Identities = 19/49 (38%), Positives = 28/49 (57%), Gaps = 4/49 (8%)
Query: 102 EGWLWKQGGRYKSWKRRWFILNDKC--LYYF--EYTTDKEPRGIIPLEN 146
EG L K K W+ RWF+L+ + L YF E + +++PRG +PL
Sbjct: 2 EGQLSKYTNVVKGWQNRWFVLDPEAGSLEYFVSEESKNQKPRGSLPLAG 50
Score = 26.8 bits (60), Expect = 3.5
Identities = 13/31 (41%), Positives = 17/31 (54%), Gaps = 2/31 (6%)
Query: 10 EGWLWKQGGRYKSWKRRWFILNDKC--LYYF 38
EG L K K W+ RWF+L+ + L YF
Sbjct: 2 EGQLSKYTNVVKGWQNRWFVLDPEAGSLEYF 32
>gnl|CDD|241482 cd13328, PH1_FDG_family, FYVE, RhoGEF and PH domain
containing/faciogenital dysplasia family proteins
pleckstrin homology (PH), N-terminal domain. In
general, FGDs have a RhoGEF (DH) domain, followed by an
N-terminal PH domain, a FYVE domain and a C-terminal PH
domain. All FGDs are guanine nucleotide exchange factors
that activates the Rho GTPase Cdc42, an important
regulator of membrane trafficking. The RhoGEF domain is
responsible for GEF catalytic activity, while the
N-terminal PH domain is involved in intracellular
targeting of the DH domain. Mutations in the FGD1 gene
are responsible for the X-linked disorder known as
faciogenital dysplasia (FGDY). PH domains have diverse
functions, but in general are involved in targeting
proteins to the appropriate cellular location or in the
interaction with a binding partner. They share little
sequence conservation, but all have a common fold, which
is electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 91
Score = 33.6 bits (77), Expect = 0.015
Identities = 29/116 (25%), Positives = 42/116 (36%), Gaps = 35/116 (30%)
Query: 101 KEGWLWKQGGRYKSWKRRWFIL-NDKCLYYFEYTTDKEPRGI---------IPLENIQVR 150
KEG + K + + + R L ND LY + R I + ++ + V+
Sbjct: 1 KEGHILKLSAKNGTSQERHLFLFNDMLLY-----CVPKLRLIGQKYGVRARMDVDGMNVQ 55
Query: 151 EVHDRHKPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKC 206
V PH F +EGK + A+TAEEKD WI
Sbjct: 56 VVKGDEVPHTFY--------------------IEGKQKSLELQASTAEEKDAWIDA 91
>gnl|CDD|241392 cd13238, PH2_FGD4_insect-like, FYVE, RhoGEF and PH domain
containing/faciogenital dysplasia protein 4 pleckstrin
homology (PH) domain, C-terminus, in insect and related
arthropods. In general, FGDs have a RhoGEF (DH) domain,
followed by an N-terminal PH domain, a FYVE domain and a
C-terminal PH domain. All FGDs are guanine nucleotide
exchange factors that activates the Rho GTPase Cdc42, an
important regulator of membrane trafficking. The RhoGEF
domain is responsible for GEF catalytic activity, while
the N-terminal PH domain is involved in intracellular
targeting of the DH domain. FGD4 is one of the genes
associated with Charcot-Marie-Tooth neuropathy type 4
(CMT4), a group of progressive motor and sensory axonal
and demyelinating neuropathies that are distinguished
from other forms of CMT by autosomal recessive
inheritance. Those affected have distal muscle weakness
and atrophy associated with sensory loss and,
frequently, pes cavus foot deformity. This cd contains
insects, crustaceans, and chelicerates. PH domains have
diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They share
little sequence conservation, but all have a common
fold, which is electrostatically polarized. Less than
10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 96
Score = 33.0 bits (75), Expect = 0.021
Identities = 23/102 (22%), Positives = 35/102 (34%), Gaps = 30/102 (29%)
Query: 113 KSWKRRWFILN-DKCLYYFEYTTDKEPRGIIPLENIQVREVH---------DRHKPHCFE 162
K+W RRWF L+ D LY ++ DK P+ V D+ + F+
Sbjct: 13 KTWIRRWFALHPDFVLYSYKSEEDKLALTATPVPGFLVTLGEKGSAEDPLNDKDRIRAFK 72
Query: 163 LFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWI 204
+F Y A +EKD+W+
Sbjct: 73 MFHV--------------------KKSYYFQANDGDEKDKWV 94
Score = 26.4 bits (58), Expect = 4.2
Identities = 13/27 (48%), Positives = 17/27 (62%), Gaps = 1/27 (3%)
Query: 21 KSWKRRWFILN-DKCLYYFEYTTDKSA 46
K+W RRWF L+ D LY ++ DK A
Sbjct: 13 KTWIRRWFALHPDFVLYSYKSEEDKLA 39
>gnl|CDD|241287 cd01256, PH_dynamin, Dynamin pleckstrin homology (PH) domain.
Dynamin is a GTPase that regulates endocytic vesicle
formation. It has an N-terminal GTPase domain, followed
by a PH domain, a GTPase effector domain and a
C-terminal proline arginine rich domain. Dynamin-like
proteins, which are found in metazoa, plants and yeast
have the same domain architecture as dynamin, but lack
the PH domain. PH domains have diverse functions, but in
general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 112
Score = 33.4 bits (77), Expect = 0.024
Identities = 27/105 (25%), Positives = 47/105 (44%), Gaps = 16/105 (15%)
Query: 103 GWLWKQ--GGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREV--HDRHKP 158
GWL G K WF+L + L +++ +KE + ++PL+N+++R+V
Sbjct: 7 GWLTINNIGFMKGGSKEYWFVLTAESLSWYKDEEEKEKKYMLPLDNLKLRDVEKGFMSSK 66
Query: 159 HCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEW 203
H F LF +++ + V + +S T EE D W
Sbjct: 67 HIFALF------------NTDQRNVYKDYKQLELSCETQEEVDSW 99
>gnl|CDD|241536 cd13385, PH_Gab3, Grb2-associated binding protein 3 pleckstrin
homology (PH) domain. The Gab subfamily includes
several Gab proteins, Drosophila DOS and C. elegans
SOC-1. They are scaffolding adaptor proteins, which
possess N-terminal PH domains and a C-terminus with
proline-rich regions and multiple phosphorylation sites.
Following activation of growth factor receptors, Gab
proteins are tyrosine phosphorylated and activate PI3K,
which generates 3-phosphoinositide lipids. By binding to
these lipids via the PH domain, Gab proteins remain in
proximity to the receptor, leading to further signaling.
While not all Gab proteins depend on the PH domain for
recruitment, it is required for Gab activity. The
members in this cd include the Gab1, Gab2, and Gab3
proteins. PH domains have diverse functions, but in
general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 125
Score = 33.3 bits (76), Expect = 0.024
Identities = 29/117 (24%), Positives = 48/117 (41%), Gaps = 24/117 (20%)
Query: 103 GWLWKQGGRYK----SWKRRWFIL-------NDKCLYYFEYTTDKEPRGIIPLENIQVRE 151
GWL K K +W++RWF+L N L Y+ K+P +I L +V
Sbjct: 10 GWLIKSPPEKKLKRYAWRKRWFVLRRGRMSGNPDVLEYYRNKHSKKPIRVIDLNECEV-- 67
Query: 152 VHDRHKPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCLS 208
+G FIK ++ +V+ + + A T EE +W++ +S
Sbjct: 68 -----------TKHAGVNFIKKEFQNNFVFIVKTTTRTFYLVAKTEEEMQDWVQNIS 113
>gnl|CDD|241478 cd13324, PH_Gab-like, Grb2-associated binding protein family
Pleckstrin homology (PH) domain. Gab proteins are
scaffolding adaptor proteins, which possess N-terminal
PH domains and a C-terminus with proline-rich regions
and multiple phosphorylation sites. Following activation
of growth factor receptors, Gab proteins are tyrosine
phosphorylated and activate PI3K, which generates
3-phosphoinositide lipids. By binding to these lipids
via the PH domain, Gab proteins remain in proximity to
the receptor, leading to further signaling. While not
all Gab proteins depend on the PH domain for
recruitment, it is required for Gab activity. There are
3 families: Gab1, Gab2, and Gab3. PH domains have
diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They share
little sequence conservation, but all have a common
fold, which is electrostatically polarized. Less than
10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 103
Score = 32.4 bits (74), Expect = 0.043
Identities = 19/55 (34%), Positives = 26/55 (47%), Gaps = 13/55 (23%)
Query: 102 EGWLWK-----QGGRYKSWKRRWFIL-------NDKCLYYFEYTTDKEPRGIIPL 144
EGWL K + R WK+RWF+L + L Y++ K+P G I L
Sbjct: 2 EGWLRKSPPEKKIKRAA-WKKRWFVLRSGRLSGDPDVLEYYKDDHCKKPIGAIDL 55
Score = 25.8 bits (57), Expect = 8.9
Identities = 16/46 (34%), Positives = 19/46 (41%), Gaps = 10/46 (21%)
Query: 10 EGWLWK-----QGGRYKSWKRRWFILNDKCL----YYFEYTTDKSA 46
EGWL K + R WK+RWF+L L EY D
Sbjct: 2 EGWLRKSPPEKKIKRAA-WKKRWFVLRSGRLSGDPDVLEYYKDDHC 46
>gnl|CDD|241537 cd13386, PH1_FGD2, FYVE, RhoGEF and PH domain
containing/faciogenital dysplasia protein 2 pleckstrin
homology (PH), N-terminal domain. In general, FGDs have
a RhoGEF (DH) domain, followed by an N-terminal PH
domain, a FYVE domain and a C-terminal PH domain. All
FGDs are guanine nucleotide exchange factors that
activates the Rho GTPase Cdc42, an important regulator
of membrane trafficking. The RhoGEF domain is
responsible for GEF catalytic activity, while the
N-terminal PH domain is involved in intracellular
targeting of the DH domain. Not much is known about
FGD2. FGD1 is the best characterized member of the
group with mutations here leading to the X-linked
disorder known as faciogenital dysplasia (FGDY). PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 107
Score = 31.9 bits (72), Expect = 0.062
Identities = 28/110 (25%), Positives = 43/110 (39%), Gaps = 25/110 (22%)
Query: 101 KEGWLWKQGGRYKSWKRRW-FILNDKCLY----YFEYTTDKEPRGIIPLENIQVREVHDR 155
KEG + K R S ++ F+ N+ LY + + + R I + ++VRE+ D
Sbjct: 2 KEGPIQKISFRRNSTMEKYLFLFNNMLLYCVPKVIQVGAEFQVRTRIDVAGMKVRELMDA 61
Query: 156 HKPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIK 205
PH F +V GK + A + EE WIK
Sbjct: 62 EFPHSF--------------------LVSGKQRTLELQARSQEEMIAWIK 91
>gnl|CDD|241267 cd01234, PH_CADPS, Ca2+-dependent activator protein (also called
CAPS) Pleckstrin homology (PH) domain. CADPS/CAPS
consists of two members, CAPS1 which regulates
catecholamine release from neuroendocrine cells and
CAPS2 which is involved in the release of two
neurotrophins, brain-derived neurotrophic factor (BDNF)
and neurotrophin-3 (NT-3) from cerebellar granule cells.
CADPS plays an important role in vesicle exocytosis in
neurons and endocrine cells where it functions to prime
the exocytic machinery for Ca2+-triggered fusion.
Priming involves the assembly of trans SNARE complexes.
The initial interaction of vesicles with target
membranes is mediated by diverse stage-specific
tethering factors or multi-subunit tethering complexes.
CADPS and Munc13 proteins are proposed to be the
functional homologs of the stage-specific tethering
factors that prime membrane fusion. Interestingly,
regions in the C-terminal half of CADPS are similar to
the C-terminal region of Munc13-1 that was reported to
bind syntaxin-1. CADPS has independent interactions with
each of the SNARE proteins (Q-SNARE and R-SNARE)
required for vesicle fusion. CADPS interacts with
Q-SNARE proteins syntaxin-1 (H3 SNARE) and SNAP-25 (SN1)
and might promote Q-SNARE heterodimer formation. Through
its N-terminal R-SNARE VAMP-2 interactions, CADPS bound
to heterodimeric Q-SNARE complexes could be involved in
catalyzing the zippering of VAMP-2 into recipient
complexes. It also contains a central PH domain that
binds to phosphoinositide 4,5 bisphosphate containing
liposomes. Membrane association may also be mediated by
binding to phosphatidlyserine via general electrostatic
interactions. PH domains have diverse functions, but in
general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 122
Score = 31.6 bits (72), Expect = 0.12
Identities = 29/112 (25%), Positives = 44/112 (39%), Gaps = 20/112 (17%)
Query: 98 NPDKEGWLWKQG-GRYKSWKRRWFILNDKCLYYF---EYTTDK-EPRGIIPLENIQVREV 152
N G+L+ G +K WK+R+F+L Y F Y K EP+ ++ L+ V
Sbjct: 7 NMKHCGYLYALGKSVWKKWKKRYFVLVQVSQYTFAMCSYREKKSEPQEMMQLDGYTV--- 63
Query: 153 HDRHKPHCFELFTSGFEFIKACK--------TDSEGKVVEGKHTVYRMSAAT 196
D +P G F A K +D E + + V + AT
Sbjct: 64 -DYTEPQPDLGLEGGRFFFNAVKEGDSVLFASDDE---NDRQLWVQALYRAT 111
>gnl|CDD|241521 cd13370, PH_GAP1m_mammal-like, GTPase activating protein 1 m
pleckstrin homology (PH) domain. GAP1(m) (also called
RASA2/RAS p21 protein activator (GTPase activating
protein) 2) is a member of the GAP1 family of
GTPase-activating proteins, along with RASAL1,
GAP1(IP4BP), and CAPRI. With the notable exception of
GAP1(m), they all possess an arginine finger-dependent
GAP activity on the Ras-related protein Rap1. GAP1(m)
contains two C2 domains, a PH domain, a RasGAP domain,
and a BTK domain. Its C2 domains, like those of
GAP1IP4BP, do not contain the C2 motif that is known to
be required for calcium-dependent phospholipid binding.
GAP1(m) is regulated by the binding of its PH domains to
phophoinositides, PIP3 (phosphatidylinositol
3,4,5-trisphosphate). It suppresses RAS, enhancing the
weak intrinsic GTPase activity of RAS proteins resulting
in the inactive GDP-bound form of RAS, allowing control
of cellular proliferation and differentiation. GAP1(m)
binds inositol tetrakisphosphate (IP4). PH domains have
diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They share
little sequence conservation, but all have a common
fold, which is electrostatically polarized. Less than
10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 133
Score = 31.5 bits (71), Expect = 0.13
Identities = 31/113 (27%), Positives = 50/113 (44%), Gaps = 23/113 (20%)
Query: 101 KEGWLWKQG-GRY----KSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVHDR 155
KEG + K+ GR K++K+RWF L + L Y + KE IP++NI E +
Sbjct: 18 KEGEMHKRAQGRTRIGKKNFKKRWFCLTSRELTYHK-QKGKEAIFTIPVKNILAVEKLEE 76
Query: 156 HKPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCLS 208
+ +F +V+ + +Y + A E +EWI+ LS
Sbjct: 77 SAFNKKNMF----------------QVIHSEKPLY-VQANNCVEANEWIEVLS 112
>gnl|CDD|241390 cd13236, PH2_FGD1-4, FYVE, RhoGEF and PH domain
containing/faciogenital dysplasia proteins pleckstrin
homology (PH) domain, C-terminus. In general, FGDs have
a RhoGEF (DH) domain, followed by an N-terminal PH
domain, a FYVE domain and a C-terminal PH domain. All
FGDs are guanine nucleotide exchange factors that
activates the Rho GTPase Cdc42, an important regulator
of membrane trafficking. The RhoGEF domain is
responsible for GEF catalytic activity, while the
N-terminal PH domain is involved in intracellular
targeting of the DH domain. Not much is known about
FGD2. FGD1 is the best characterized member of the
group with mutations here leading to the X-linked
disorder known as faciogenital dysplasia (FGDY). Both
FGD1 and FGD3 are targeted by the ubiquitin ligase
SCF(FWD1/beta-TrCP) upon phosphorylation of two serine
residues in its DSGIDS motif and subsequently degraded
by the proteasome. However, FGD1 and FGD3 induced
significantly different morphological changes in HeLa
Tet-Off cells and while FGD1 induced long finger-like
protrusions, FGD3 induced broad sheet-like protrusions
when the level of GTP-bound Cdc42 was significantly
increased by the inducible expression of FGD3. They also
reciprocally regulated cell motility in inducibly
expressed in HeLa Tet-Off cells, FGD1 stimulated cell
migration while FGD3 inhibited it. FGD1 and FGD3
therefore play different roles to regulate cellular
functions, even though their intracellular levels are
tightly controlled by the same destruction pathway
through SCF(FWD1/beta-TrCP). FGD4 is one of the genes
associated with Charcot-Marie-Tooth neuropathy type 4
(CMT4), a group of progressive motor and sensory axonal
and demyelinating neuropathies that are distinguished
from other forms of CMT by autosomal recessive
inheritance. Those affected have distal muscle weakness
and atrophy associated with sensory loss and,
frequently, pes cavus foot deformity. PH domains have
diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They share
little sequence conservation, but all have a common
fold, which is electrostatically polarized. Less than
10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 105
Score = 31.1 bits (71), Expect = 0.14
Identities = 22/104 (21%), Positives = 35/104 (33%), Gaps = 30/104 (28%)
Query: 113 KSWKRRWFILNDK---CLYYFEYTTDKEPRGIIPLENIQVR-----EVHDRHKPHCFELF 164
K+W++ W ++ LY + D IPL +V E D H F+L
Sbjct: 21 KTWQKVWCVIPRTEPLVLYLYGAPQDVRAPRTIPLPGYEVSVPPPEERLDG--KHVFKLS 78
Query: 165 TSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCLS 208
S + SA + E + W++ LS
Sbjct: 79 QS--------------------KQSHYFSAESEELQQRWLEALS 102
>gnl|CDD|241451 cd13297, PH3_MyoX-like, Myosin X-like Pleckstrin homology (PH)
domain, repeat 3. MyoX, a MyTH-FERM myosin, is a
molecular motor that has crucial functions in the
transport and/or tethering of integrins in the
actin-based extensions known as filopodia, microtubule
binding, and in netrin-mediated axon guidance. It
functions as a dimer. MyoX walks on bundles of actin,
rather than single filaments, unlike the other
unconventional myosins. MyoX is present in organisms
ranging from humans to choanoflagellates, but not in
Drosophila and Caenorhabditis elegans.MyoX consists of
a N-terminal motor/head region, a neck made of 3 IQ
motifs, and a tail consisting of a coiled-coil domain,
a PEST region, 3 PH domains, a myosin tail homology 4
(MyTH4), and a FERM domain at its very C-terminus. The
first PH domain in the MyoX tail is a split-PH domain,
interupted by the second PH domain such that PH 1a and
PH 1b flanks PH 2. The third PH domain (PH 3) follows
the PH 1b domain. This cd contains the third MyoX PH
repeat. PLEKHH3/Pleckstrin homology (PH) domain
containing, family H (with MyTH4 domain) member 3 is
also part of this CD and like MyoX contains a FERM
domain, a MyTH4 domain, and a single PH domain. Not
much is known about the function of PLEKHH3. PH domains
have diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They
share little sequence conservation, but all have a
common fold, which is electrostatically polarized. Less
than 10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved
across all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 123
Score = 31.1 bits (71), Expect = 0.15
Identities = 13/30 (43%), Positives = 19/30 (63%), Gaps = 2/30 (6%)
Query: 11 GWLWKQGGRYKSW--KRRWFILNDKCLYYF 38
GWL K+GG+ + K+RWF+L L Y+
Sbjct: 17 GWLLKEGGKGGNLTKKKRWFVLTPNSLDYY 46
Score = 27.3 bits (61), Expect = 3.5
Identities = 9/25 (36%), Positives = 13/25 (52%)
Query: 50 ENSSGRYKSWKRRWFILNDKCLYYF 74
E G + K+RWF+L L Y+
Sbjct: 22 EGGKGGNLTKKKRWFVLTPNSLDYY 46
>gnl|CDD|241410 cd13256, PH3_ARAP, ArfGAP with RhoGAP domain, ankyrin repeat and PH
domain Pleckstrin homology (PH) domain, repeat 3. ARAP
proteins (also called centaurin delta) are
phosphatidylinositol 3,4,5-trisphosphate-dependent
GTPase-activating proteins that modulate actin
cytoskeleton remodeling by regulating ARF and RHO family
members. They bind phosphatidylinositol
3,4,5-trisphosphate (PtdIns(3,4,5)P3) and
phosphatidylinositol 3,4-bisphosphate (PtdIns(3,4,5)P2)
binding. There are 3 mammalian ARAP proteins: ARAP1,
ARAP2, and ARAP3. All ARAP proteins contain a N-terminal
SAM (sterile alpha motif) domain, 5 PH domains, an
ArfGAP domain, 2 ankyrin domain, A RhoGap domain, and a
Ras-associating domain. This hierarchy contains the
third PH domain in ARAP. PH domains have diverse
functions, but in general are involved in targeting
proteins to the appropriate cellular location or in the
interaction with a binding partner. They share little
sequence conservation, but all have a common fold, which
is electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 110
Score = 30.8 bits (70), Expect = 0.16
Identities = 27/94 (28%), Positives = 35/94 (37%), Gaps = 13/94 (13%)
Query: 117 RRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVHDRHKPHCFELFTSGFEFIKACKT 176
RRW +L D L Y+E P G I + I V + P GFEF
Sbjct: 29 RRWCVLEDGFLSYYESDKSTTPNGEIDISEIVCLAV---NPPDTD--PGHGFEFTFELYL 83
Query: 177 DSEGKVVEGKHTVYRMSAATAEEKDEWIKCLSLH 210
+SE +Y TAE EW K ++
Sbjct: 84 ESE--------RLYLFGTETAEAAHEWTKAIAKA 109
>gnl|CDD|241428 cd13274, PH_DGK_type2, Type 2 Diacylglycerol kinase Pleckstrin
homology (PH) domain. DGK (also called DAGK) catalyzes
the conversion of diacylglycerol (DAG) to phosphatidic
acid (PA) utilizing ATP as a source of the phosphate.
In non-stimulated cells, DGK activity is low and DAG is
used for glycerophospholipid biosynthesis. Upon
receptor activation of the phosphoinositide pathway,
DGK activity increases which drives the conversion of
DAG to PA. DGK acts as a switch by terminating the
signalling of one lipid while simultaneously activating
signalling by another. There are 9 mammalian DGK
isoforms all with conserved catalytic domains and two
cysteine rich domains. These are further classified
into 5 groups according to the presence of additional
functional domains and substrate specificity: Type 1 -
DGK-alpha, DGK-beta, DGK-gamma - contain EF-hand motifs
and a recoverin homology domain; Type 2 - DGK-delta,
DGK-eta, and DGK-kappa- contain a pleckstrin homology
domain, two cysteine-rich zinc finger-like structures,
and a separated catalytic region; Type 3 - DGK-epsilon
- has specificity for arachidonate-containing DAG; Type
4 - DGK-zeta, DGK-iota- contain a MARCKS homology
domain, ankyrin repeats, a C-terminal nuclear
localization signal, and a PDZ-binding motif; Type 5 -
DGK-theta - contains a third cysteine-rich domain, a
pleckstrin homology domain and a proline rich region.
The type 2 DGKs are present as part of this Metazoan
DGK hierarchy. They have a N-terminal PH domain, two
cysteine rich domains, followed by bipartite catalytic
domains, and a C-terminal SAM domain. Their catalytic
domains and perhaps other DGK catalytic domains may
function as two independent units in a coordinated
fashion. They may also require other motifs for maximal
activity because several DGK catalytic domains have
very little DAG kinase activity when expressed as
isolated subunits. PH domains have diverse functions,
but in general are involved in targeting proteins to
the appropriate cellular location or in the interaction
with a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved
across all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 97
Score = 30.4 bits (69), Expect = 0.19
Identities = 18/53 (33%), Positives = 26/53 (49%), Gaps = 8/53 (15%)
Query: 9 KEGWLWKQGGRYKSWKRRWFILNDKCLYY--------FEYTTDKSACLIENSS 53
KEG L KQ ++ WK+R+F L + LYY F+ A + E S+
Sbjct: 2 KEGPLLKQTSSFQRWKKRYFKLRGRTLYYAKDSKSLIFDEVDLSDASVAECST 54
Score = 29.2 bits (66), Expect = 0.58
Identities = 14/29 (48%), Positives = 19/29 (65%)
Query: 101 KEGWLWKQGGRYKSWKRRWFILNDKCLYY 129
KEG L KQ ++ WK+R+F L + LYY
Sbjct: 2 KEGPLLKQTSSFQRWKKRYFKLRGRTLYY 30
>gnl|CDD|140293 PTZ00267, PTZ00267, NIMA-related protein kinase; Provisional.
Length = 478
Score = 31.9 bits (72), Expect = 0.22
Identities = 28/113 (24%), Positives = 47/113 (41%), Gaps = 31/113 (27%)
Query: 101 KEGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIP----LENIQ----VREV 152
G+L+K + WK+R+F + + L + + E G+ P LE + V EV
Sbjct: 379 HGGYLYKYSSDMR-WKKRYFYIGNGQLR-ISLSENPENDGVAPKSVNLETVNDVFPVPEV 436
Query: 153 HDRHKPHCFEL-FTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWI 204
+ + P+ L F +G + I A TAE++D+WI
Sbjct: 437 YSQKHPNQLVLWFNNGQKIIAY--------------------AKTAEDRDQWI 469
>gnl|CDD|241295 cd01264, PH_MELT_VEPH1, Melted pleckstrin homology (PH) domain.
The melted protein (also called Ventricular zone
expressed PH domain-containing protein homolog 1) is
expressed in the developing central nervous system of
vertebrates. It contains a single C-terminal PH domain
that is required for membrane targeting. PH domains have
diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They share
little sequence conservation, but all have a common
fold, which is electrostatically polarized. Less than
10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 110
Score = 30.4 bits (69), Expect = 0.24
Identities = 31/116 (26%), Positives = 52/116 (44%), Gaps = 31/116 (26%)
Query: 102 EGWLWKQGGRYK---SWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVH----- 153
EG L ++ GR+K W+ R+F L+ L Y + + + P+E ++R V
Sbjct: 10 EGQLKEKKGRWKFFKRWRTRYFTLSGASLLYRKLKSKDDS---PPIELSKIRSVKVLRRR 66
Query: 154 DRHKPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCLSL 209
DR P FE+FT ++ K +GK+ +EW++CLS+
Sbjct: 67 DRSIPKAFEIFTDDKTYVLKAK--------DGKNA------------EEWVQCLSI 102
>gnl|CDD|241437 cd13283, PH_GPBP, Goodpasture antigen binding protein Pleckstrin
homology (PH) domain. The GPBP (also called Collagen
type IV alpha-3-binding protein/hCERT; START
domain-containing protein 11/StARD11; StAR-related lipid
transfer protein 11) is a kinase that phosphorylates an
N-terminal region of the alpha 3 chain of type IV
collagen, which is commonly known as the goodpasture
antigen. Its splice variant the ceramide transporter
(CERT) mediates the cytosolic transport of ceramide.
There have been additional splice variants identified,
but all of them function as ceramide transport proteins.
GPBP and CERT both contain an N-terminal PH domain,
followed by a serine rich domain, and a C-terminal START
domain. However, GPBP has an additional serine rich
domain just upstream of its START domain. They are
members of the oxysterol binding protein (OSBP) family
which includes OSBP, OSBP-related proteins (ORP),
Goodpasture antigen binding protein (GPBP), and Four
phosphate adaptor protein 1 (FAPP1). They have a wide
range of purported functions including sterol transport,
cell cycle control, pollen development and vessicle
transport from Golgi recognize both PI lipids and ARF
proteins. PH domains have diverse functions, but in
general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 100
Score = 29.5 bits (67), Expect = 0.37
Identities = 27/98 (27%), Positives = 40/98 (40%), Gaps = 24/98 (24%)
Query: 115 WKRRWFILNDKCLYYF--EYTTDKEPRGIIPLENIQVREVHDRHKPHCFELFTSGFEFIK 172
W+ R+F+L D L Y+ E T RG I L + KPH F+
Sbjct: 15 WQDRYFVLKDGTLSYYKSEDETQYGCRGSISLRKAVI-------KPHEFD---------- 57
Query: 173 ACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCLSLH 210
C+ D V +V+ + A + EE+ W+ L H
Sbjct: 58 ECRFD-----VSVNDSVWYLRAESPEERQRWVDALEAH 90
>gnl|CDD|241281 cd01250, PH_AGAP, Arf-GAP with GTPase, ANK repeat and PH
domain-containing protein Pleckstrin homology (PH)
domain. AGAP (also called centaurin gamma;
PIKE/Phosphatidylinositol-3-kinase enhancer) reside
mainly in the nucleus and are known to activate
phosphoinositide 3-kinase, a key regulator of cell
proliferation, motility and vesicular trafficking. There
are 3 isoforms of AGAP (PIKE-A, PIKE-L, and PIKE-S) the
longest of which PIKE-L consists of N-terminal proline
rich domains (PRDs), followed by a GTPase domain, a
split PH domain (PHN and PHC), an ArfGAP domain and two
ankyrin repeats. PIKE-S terminates after the PHN domain
and PIKE-A is missing the PRD region. Centaurin binds
phosphatidlyinositol (3,4,5)P3. PH domains have diverse
functions, but in general are involved in targeting
proteins to the appropriate cellular location or in the
interaction with a binding partner. They share little
sequence conservation, but all have a common fold, which
is electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 114
Score = 30.0 bits (68), Expect = 0.38
Identities = 29/113 (25%), Positives = 46/113 (40%), Gaps = 21/113 (18%)
Query: 99 PDKEGWLWKQGGR--YKSWK-RRWFILNDKCLYYF----EYTTDKEPRGIIPLENIQVRE 151
P K+G+L+K+ + K WK + + +D L Y +Y + I L V+
Sbjct: 4 PIKQGYLYKRSSKSLNKEWKKKYVTLCDDGRLTYHPSLHDYMENVH-GKEIDLLRTTVKV 62
Query: 152 VHDRHKPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWI 204
R S FEFI +V + AA++EE+DEW+
Sbjct: 63 PGKRPPRA---SSKSAFEFI----------IVSLDGKQWHFEAASSEERDEWV 102
>gnl|CDD|241471 cd13317, PH_PLEKHO1_PLEKHO2, Pleckstrin homology domain-containing
family O Pleckstrin homology domain. The PLEKHO family
members are PLEKHO1 (also called CKIP-1/Casein kinase
2-interacting protein 1/CK2-interacting protein 1) and
PLEKHO2 (PLEKHQ1/PH domain-containing family Q member
1). They both contain a single PH domain. PLEKHO1 acts
as a scaffold protein that functions in plasma membrane
recruitment, transcriptional activity modulation, and
posttranscriptional modification regulation. As an
adaptor protein it is involved in signaling pathways,
apoptosis, differentiation, cytoskeleton, and bone
formation. Not much is know about PLEKHO2. PH domains
have diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They share
little sequence conservation, but all have a common
fold, which is electrostatically polarized. Less than
10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 101
Score = 29.0 bits (65), Expect = 0.62
Identities = 25/108 (23%), Positives = 47/108 (43%), Gaps = 13/108 (12%)
Query: 99 PDKEGWLWKQGGRYKS-WKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVHDRHK 157
P+K GW+ K G + WK R+ +L L +E + + + LE+ ++ E K
Sbjct: 5 PEKAGWIKKSSGIFLGIWKDRYVVLKKTQLLVYE-----KEQEVFDLEDYELCEYLRCQK 59
Query: 158 PHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIK 205
+ S F I++ + ++ + + A + EEK+ WI
Sbjct: 60 SRSKKKRKSRFTLIRSPQPGNKVPDL-------KFQAVSPEEKESWIN 100
Score = 26.0 bits (57), Expect = 8.6
Identities = 12/34 (35%), Positives = 18/34 (52%), Gaps = 1/34 (2%)
Query: 7 PDKEGWLWKQGGRYKS-WKRRWFILNDKCLYYFE 39
P+K GW+ K G + WK R+ +L L +E
Sbjct: 5 PEKAGWIKKSSGIFLGIWKDRYVVLKKTQLLVYE 38
>gnl|CDD|187586 cd05325, carb_red_sniffer_like_SDR_c, carbonyl reductase
sniffer-like, classical (c) SDRs. Sniffer is an
NADPH-dependent carbonyl reductase of the classical SDR
family. Studies in Drosophila melanogaster implicate
Sniffer in the prevention of neurodegeneration due to
aging and oxidative-stress. This subgroup also includes
Rhodococcus sp. AD45 IsoH, which is an NAD-dependent
1-hydroxy-2-glutathionyl-2-methyl-3-butene dehydrogenase
involved in isoprene metabolism, Aspergillus nidulans
StcE encoded by a gene which is part of a proposed
sterigmatocystin biosynthesis gene cluster, Bacillus
circulans SANK 72073 BtrF encoded by a gene found in the
butirosin biosynthesis gene cluster, and Aspergillus
parasiticus nor-1 involved in the biosynthesis of
aflatoxins. SDRs are a functionally diverse family of
oxidoreductases that have a single domain with a
structurally conserved Rossmann fold (alpha/beta folding
pattern with a central beta-sheet), an NAD(P)(H)-binding
region, and a structurally diverse C-terminal region.
Classical SDRs are typically about 250 residues long,
while extended SDRs are approximately 350 residues.
Sequence identity between different SDR enzymes are
typically in the 15-30% range, but the enzymes share the
Rossmann fold NAD-binding motif and characteristic
NAD-binding and catalytic sequence patterns. These
enzymes catalyze a wide range of activities including
the metabolism of steroids, cofactors, carbohydrates,
lipids, aromatic compounds, and amino acids, and act in
redox sensing. Classical SDRs have an TGXXX[AG]XG
cofactor binding motif and a YXXXK active site motif,
with the Tyr residue of the active site motif serving as
a critical catalytic residue (Tyr-151, human
15-hydroxyprostaglandin dehydrogenase (15-PGDH)
numbering). In addition to the Tyr and Lys, there is
often an upstream Ser (Ser-138, 15-PGDH numbering)
and/or an Asn (Asn-107, 15-PGDH numbering) contributing
to the active site; while substrate binding is in the
C-terminal region, which determines specificity. The
standard reaction mechanism is a 4-pro-S hydride
transfer and proton relay involving the conserved Tyr
and Lys, a water molecule stabilized by Asn, and
nicotinamide. Extended SDRs have additional elements in
the C-terminal region, and typically have a TGXXGXXG
cofactor binding motif. Complex (multidomain) SDRs such
as ketoreductase domains of fatty acid synthase have a
GGXGXXG NAD(P)-binding motif and an altered active site
motif (YXXXN). Fungal type ketoacyl reductases have a
TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs
have lost catalytic activity and/or have an unusual
NAD(P)-binding motif and missing or unusual active site
residues. Reactions catalyzed within the SDR family
include isomerization, decarboxylation, epimerization,
C=N bond reduction, dehydratase activity,
dehalogenation, Enoyl-CoA reduction, and
carbonyl-alcohol oxidoreduction.
Length = 233
Score = 29.2 bits (66), Expect = 1.2
Identities = 12/35 (34%), Positives = 14/35 (40%), Gaps = 9/35 (25%)
Query: 185 GKHTVYRMS-AA--------TAEEKDEWIKCLSLH 210
G YR S AA E K + I +SLH
Sbjct: 146 GGWYSYRASKAALNMLTKSLAVELKRDGITVVSLH 180
>gnl|CDD|241448 cd13294, PH_ORP_plant, Plant Oxysterol binding protein related
protein Pleckstrin homology (PH) domain. Plant ORPs
contain a N-terminal PH domain and a C-terminal
OSBP-related domain. Not much is known about its
specific function in plants to date. Members here
include: Arabidopsis, spruce, and petunia. Oxysterol
binding proteins are a multigene family that is
conserved in yeast, flies, worms, mammals and plants. In
general OSBPs and ORPs have been found to be involved in
the transport and metabolism of cholesterol and related
lipids in eukaryotes. They all contain a C-terminal
oxysterol binding domain, and most contain an N-terminal
PH domain. OSBP PH domains bind to membrane
phosphoinositides and thus likely play an important role
in intracellular targeting. They are members of the
oxysterol binding protein (OSBP) family which includes
OSBP, OSBP-related proteins (ORP), Goodpasture antigen
binding protein (GPBP), and Four phosphate adaptor
protein 1 (FAPP1). They have a wide range of purported
functions including sterol transport, cell cycle
control, pollen development and vessicle transport from
Golgi recognize both PI lipids and ARF proteins. PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 100
Score = 27.8 bits (62), Expect = 1.5
Identities = 20/51 (39%), Positives = 28/51 (54%), Gaps = 2/51 (3%)
Query: 103 GWLWKQGGRYKSWKRRWFILNDKCL-YYFEYTTDK-EPRGIIPLENIQVRE 151
G L+K K W+ RWF+L D L YY + DK +P G + L+ +RE
Sbjct: 3 GILYKWVNYGKGWRSRWFVLQDGVLSYYKVHGPDKVKPSGEVHLKVSSIRE 53
Score = 25.9 bits (57), Expect = 7.3
Identities = 12/29 (41%), Positives = 15/29 (51%), Gaps = 2/29 (6%)
Query: 57 KSWKRRWFILNDKCLYYFEYTTDKPFKIP 85
K W+ RWF+L D L Y Y P K+
Sbjct: 13 KGWRSRWFVLQDGVLSY--YKVHGPDKVK 39
>gnl|CDD|241538 cd13387, PH1_FGD3, FYVE, RhoGEF and PH domain
containing/faciogenital dysplasia protein 3 pleckstrin
homology (PH), N-terminal domain. In general, FGDs have
a RhoGEF (DH) domain, followed by an N-terminal PH
domain, a FYVE domain and a C-terminal PH domain. All
FGDs are guanine nucleotide exchange factors that
activates the Rho GTPase Cdc42, an important regulator
of membrane trafficking. The RhoGEF domain is
responsible for GEF catalytic activity, while the
N-terminal PH domain is involved in intracellular
targeting of the DH domain. Both FGD1 and FGD3 are
targeted by the ubiquitin ligase SCF(FWD1/beta-TrCP)
upon phosphorylation of two serine residues in its
DSGIDS motif and subsequently degraded by the
proteasome. However, FGD1 and FGD3 induced significantly
different morphological changes in HeLa Tet-Off cells
and while FGD1 induced long finger-like protrusions,
FGD3 induced broad sheet-like protrusions when the level
of GTP-bound Cdc42 was significantly increased by the
inducible expression of FGD3. They also reciprocally
regulated cell motility in inducibly expressed in HeLa
Tet-Off cells, FGD1 stimulated cell migration while FGD3
inhibited it. FGD1 and FGD3 therefore play different
roles to regulate cellular functions, even though their
intracellular levels are tightly controlled by the same
destruction pathway through SCF(FWD1/beta-TrCP). PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 107
Score = 28.0 bits (62), Expect = 1.8
Identities = 16/69 (23%), Positives = 28/69 (40%), Gaps = 20/69 (28%)
Query: 139 RGIIPLENIQVREVHDRHKPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAE 198
R + + +QV+E+ ++ H F ++ GK + A T E
Sbjct: 45 REKMDISGLQVQEIVKQNVAHTF--------------------IITGKKRSLELQARTEE 84
Query: 199 EKDEWIKCL 207
EK EWI+ +
Sbjct: 85 EKKEWIQVI 93
>gnl|CDD|241285 cd01254, PH_PLD, Phospholipase D pleckstrin homology (PH) domain.
PLD hydrolyzes phosphatidylcholine to phosphatidic acid
(PtdOH), which can bind target proteins. PLD contains a
PH domain, a PX domain and four conserved PLD signature
domains. The PLD PH domain is specific for
bisphosphorylated inositides. PH domains have diverse
functions, but in general are involved in targeting
proteins to the appropriate cellular location or in the
interaction with a binding partner. They share little
sequence conservation, but all have a common fold, which
is electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 134
Score = 28.0 bits (63), Expect = 1.9
Identities = 14/59 (23%), Positives = 23/59 (38%), Gaps = 17/59 (28%)
Query: 101 KEGWLWKQGGRYKS-----------------WKRRWFILNDKCLYYFEYTTDKEPRGII 142
KEG+L K+ G ++ W +RWFI+ D L Y + + +
Sbjct: 26 KEGYLKKRSGGHRQGWRVCHFCCCCKSMCSRWSKRWFIVKDSFLAYVDDPDSGKILDVF 84
>gnl|CDD|241297 cd01266, PH_Gab1_Gab2, Grb2-associated binding proteins 1 and 2
pleckstrin homology (PH) domain. The Gab subfamily
includes several Gab proteins, Drosophila DOS and C.
elegans SOC-1. They are scaffolding adaptor proteins,
which possess N-terminal PH domains and a C-terminus
with proline-rich regions and multiple phosphorylation
sites. Following activation of growth factor receptors,
Gab proteins are tyrosine phosphorylated and activate
PI3K, which generates 3-phosphoinositide lipids. By
binding to these lipids via the PH domain, Gab proteins
remain in proximity to the receptor, leading to further
signaling. While not all Gab proteins depend on the PH
domain for recruitment, it is required for Gab activity.
The members in this cd include the Gab1 and Gab2
proteins. PH domains have diverse functions, but in
general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 123
Score = 28.0 bits (62), Expect = 2.0
Identities = 26/116 (22%), Positives = 48/116 (41%), Gaps = 25/116 (21%)
Query: 103 GWLWKQGGRYK----SWKRRWFIL-------NDKCLYYFEYTTDKEPRGIIPLENIQVRE 151
GWL K K +WK+RWF+L + L Y++ K+P +I L
Sbjct: 8 GWLRKSPPEKKLRRYAWKKRWFVLRSGRLSGDPDVLEYYKNDHAKKPIRVIDL------- 60
Query: 152 VHDRHKPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCL 207
+ E +G F K +S ++ ++ + A T E+ ++W++ +
Sbjct: 61 -------NLCEQVDAGLTFNKKELENSYIFDIKTIDRIFYLVAETEEDMNKWVRNI 109
>gnl|CDD|241443 cd13289, PH_Osh3p_yeast, Yeast oxysterol binding protein homolog 3
Pleckstrin homology (PH) domain. Yeast Osh3p is
proposed to function in sterol transport and regulation
of nuclear fusion during mating and of pseudohyphal
growth as well as sphingolipid metabolism. Osh3 contains
a N-GOLD (Golgi dynamics) domain, a PH domain, a FFAT
motif (two phenylalanines in an acidic tract), and a
C-terminal OSBP-related domain. GOLD domains are thought
to mediate protein-protein interactions, but their role
in ORPs are unknown. Oxysterol binding proteins are a
multigene family that is conserved in yeast, flies,
worms, mammals and plants. In general OSBPs and ORPs
have been found to be involved in the transport and
metabolism of cholesterol and related lipids in
eukaryotes. They all contain a C-terminal oxysterol
binding domain, and most contain an N-terminal PH
domain. OSBP PH domains bind to membrane
phosphoinositides and thus likely play an important role
in intracellular targeting. They are members of the
oxysterol binding protein (OSBP) family which includes
OSBP, OSBP-related proteins (ORP), Goodpasture antigen
binding protein (GPBP), and Four phosphate adaptor
protein 1 (FAPP1). They have a wide range of purported
functions including sterol transport, cell cycle
control, pollen development and vessicle transport from
Golgi recognize both PI lipids and ARF proteins. PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 90
Score = 27.2 bits (61), Expect = 2.3
Identities = 20/47 (42%), Positives = 26/47 (55%), Gaps = 6/47 (12%)
Query: 102 EGWLWKQG-GRYKSWKRRWFILNDK--CLYYFEYTTDKEP-RGIIPL 144
EGWL K+ + + + RR+F+LN K L Y Y P RG IPL
Sbjct: 3 EGWLLKKRRKKMQGFARRYFVLNFKYGTLSY--YFNPNSPVRGQIPL 47
>gnl|CDD|241535 cd13384, PH_Gab2_2, Grb2-associated binding protein family
pleckstrin homology (PH) domain. The Gab subfamily
includes several Gab proteins, Drosophila DOS and C.
elegans SOC-1. They are scaffolding adaptor proteins,
which possess N-terminal PH domains and a C-terminus
with proline-rich regions and multiple phosphorylation
sites. Following activation of growth factor receptors,
Gab proteins are tyrosine phosphorylated and activate
PI3K, which generates 3-phosphoinositide lipids. By
binding to these lipids via the PH domain, Gab proteins
remain in proximity to the receptor, leading to further
signaling. While not all Gab proteins depend on the PH
domain for recruitment, it is required for Gab activity.
Members here include insect, nematodes, and crustacean
Gab2s. PH domains have diverse functions, but in general
are involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 115
Score = 27.8 bits (62), Expect = 2.4
Identities = 16/45 (35%), Positives = 23/45 (51%), Gaps = 7/45 (15%)
Query: 102 EGWLWKQGGRYKS----WKRRWFILNDKCL---YYFEYTTDKEPR 139
EGWL K + W+RR+F+L + Y+ EY TD+ R
Sbjct: 6 EGWLTKSPPEKRIWRAKWRRRYFVLRQSEIPGQYFLEYYTDRTCR 50
Score = 26.6 bits (59), Expect = 4.5
Identities = 15/43 (34%), Positives = 23/43 (53%), Gaps = 7/43 (16%)
Query: 10 EGWLWKQGGRYKS----WKRRWFILNDKCL---YYFEYTTDKS 45
EGWL K + W+RR+F+L + Y+ EY TD++
Sbjct: 6 EGWLTKSPPEKRIWRAKWRRRYFVLRQSEIPGQYFLEYYTDRT 48
>gnl|CDD|241389 cd13235, PH2_FARP1-like, FERM, RhoGEF and pleckstrin
domain-containing protein 1 and related proteins
Pleckstrin Homology (PH) domain, repeat 2. Members here
include FARP1 (also called Chondrocyte-derived
ezrin-like protein; PH domain-containing family C member
2), FARP2 (also called FIR/FERM domain including RhoGEF;
FGD1-related Cdc42-GEF/FRG), and FARP6 (also called Zinc
finger FYVE domain-containing protein 24). They are
members of the Dbl family guanine nucleotide exchange
factors (GEFs) which are upstream positive regulators of
Rho GTPases. Little is known about FARP1 and FARP6,
though FARP1 has increased expression in differentiated
chondrocytes. FARP2 is thought to regulate neurite
remodeling by mediating the signaling pathways from
membrane proteins to Rac. It is found in brain, lung,
and testis, as well as embryonic hippocampal and
cortical neurons. FARP1 and FARP2 are composed of a
N-terminal FERM domain, a proline-rich (PR) domain,
Dbl-homology (DH), and two C-terminal PH domains. FARP6
is composed of Dbl-homology (DH), and two C-terminal PH
domains separated by a FYVE domain. This hierarchy
contains the second PH repeat. PH domains have diverse
functions, but in general are involved in targeting
proteins to the appropriate cellular location or in the
interaction with a binding partner. They share little
sequence conservation, but all have a common fold, which
is electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 113
Score = 27.7 bits (62), Expect = 2.4
Identities = 13/54 (24%), Positives = 26/54 (48%), Gaps = 3/54 (5%)
Query: 114 SWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQV---REVHDRHKPHCFELF 164
W++ W + + CL++++ D+ P +PL V E + K + F+L
Sbjct: 33 GWQKLWVVFTNFCLFFYKSHQDEFPLASLPLLGYSVGLPSEADNIDKDYVFKLQ 86
>gnl|CDD|241412 cd13258, PH_PLEKHJ1, Pleckstrin homology domain containing, family
J member 1 Pleckstrin homology (PH) domain. PLEKHJ1
(also called GNRPX2/Guanine nucleotide-releasing protein
x ). It contains a single PH domain. Very little
information is known about PLEKHJ1. PLEKHJ1 has been
shown to interact with IKBKG (inhibitor of kappa light
polypeptide gene enhancer in B-cells, kinase gamma) and
KRT33B (keratin 33B). PH domains have diverse functions,
but in general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 144
Score = 27.9 bits (62), Expect = 2.7
Identities = 19/69 (27%), Positives = 27/69 (39%), Gaps = 6/69 (8%)
Query: 99 PDKEGWLWKQG---GRYKSWKRRWFILNDKCLYYF---EYTTDKEPRGIIPLENIQVREV 152
+ EG L +G G + W L L+YF E + EP G + LE +V +
Sbjct: 16 AEMEGELLMRGPKKGSVLKKRLFWVRLVVNFLFYFKTDEMFDELEPIGALLLERCRVVQE 75
Query: 153 HDRHKPHCF 161
K F
Sbjct: 76 EPPAKSFVF 84
>gnl|CDD|241269 cd01236, PH_RIP, Rho-Interacting Protein Pleckstrin homology (PH)
domain. RIP1-RhoGDI2 was obtained in a screen for
proteins that bind to wild-type RhoA. RIP2, RIP3, and
RIP4 were isolated from cDNA libraries with
constitutively active V14RhoA (containing the C190R
mutation). RIP2 represents a novel GDP/GTP exchange
factor (RhoGEF), while RIP3 (p116Rip) and RIP4 are
thought to be structural proteins. RhoGEF contains a
Dbl(DH)/PH region, a a zinc finger motif, a
leucine-rich domain, and a coiled-coil region. The last
2 domains are thought to be involved in mediating
protein-protein interactions. RIP3 is a negative
regulator of RhoA signaling that inhibits, either
directly or indirectly, RhoA-stimulated actomyosin
contractility. In plants RIP3 is localized at
microtubules and interacts with the kinesin-13 family
member AtKinesin-13A, suggesting a role for RIP3 in
microtubule reorganization and a possible function in
Rho proteins of plants (ROP)-regulated polar growth. It
has a PH domain, two proline-rich regions which are
putative binding sites for SH3 domains, and a
COOH-terminal coiled-coil region which overlaps with
the RhoA-binding region. PH domains have diverse
functions, but in general are involved in targeting
proteins to the appropriate cellular location or in the
interaction with a binding partner. They share little
sequence conservation, but all have a common fold,
which is electrostatically polarized. Less than 10% of
PH domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved
across all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 136
Score = 27.8 bits (62), Expect = 2.9
Identities = 12/24 (50%), Positives = 15/24 (62%), Gaps = 1/24 (4%)
Query: 51 NSSGRYKSWKRRWFIL-NDKCLYY 73
N R K W+RRWF+L +D L Y
Sbjct: 46 NPMHRSKRWQRRWFVLYDDGELRY 69
Score = 26.6 bits (59), Expect = 5.8
Identities = 11/20 (55%), Positives = 14/20 (70%), Gaps = 1/20 (5%)
Query: 19 RYKSWKRRWFIL-NDKCLYY 37
R K W+RRWF+L +D L Y
Sbjct: 50 RSKRWQRRWFVLYDDGELRY 69
Score = 26.6 bits (59), Expect = 5.8
Identities = 11/20 (55%), Positives = 14/20 (70%), Gaps = 1/20 (5%)
Query: 111 RYKSWKRRWFIL-NDKCLYY 129
R K W+RRWF+L +D L Y
Sbjct: 50 RSKRWQRRWFVLYDDGELRY 69
>gnl|CDD|241254 cd01219, PH1_FGD1, FYVE, RhoGEF and PH domain
containing/faciogenital dysplasia protein 1 pleckstrin
homology (PH), N-terminal domain. In general, FGDs have
a RhoGEF (DH) domain, followed by an N-terminal PH
domain, a FYVE domain and a C-terminal PH domain. All
FGDs are guanine nucleotide exchange factors that
activates the Rho GTPase Cdc42, an important regulator
of membrane trafficking. The RhoGEF domain is
responsible for GEF catalytic activity, while the
N-terminal PH domain is involved in intracellular
targeting of the DH domain. Mutations in the FGD1 gene
are responsible for the X-linked disorder known as
faciogenital dysplasia (FGDY). Both FGD1 and FGD3 are
targeted by the ubiquitin ligase SCF(FWD1/beta-TrCP)
upon phosphorylation of two serine residues in its
DSGIDS motif and subsequently degraded by the
proteasome. However, FGD1 and FGD3 induced significantly
different morphological changes in HeLa Tet-Off cells
and while FGD1 induced long finger-like protrusions,
FGD3 induced broad sheet-like protrusions when the level
of GTP-bound Cdc42 was significantly increased by the
inducible expression of FGD3. They also reciprocally
regulated cell motility in inducibly expressed in HeLa
Tet-Off cells, FGD1 stimulated cell migration while FGD3
inhibited it. FGD1 and FGD3 therefore play different
roles to regulate cellular functions, even though their
intracellular levels are tightly controlled by the same
destruction pathway through SCF(FWD1/beta-TrCP). PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 107
Score = 26.9 bits (59), Expect = 3.9
Identities = 27/112 (24%), Positives = 45/112 (40%), Gaps = 25/112 (22%)
Query: 101 KEGWLWKQGGRYKSWKRRWFIL-NDKCLY---YFEYTTDK-EPRGIIPLENIQVREVHDR 155
KEG + K + + + R+ IL ND+ LY K R I ++ ++++E
Sbjct: 2 KEGHILKLSAKNGTTQDRYLILFNDRLLYCVPKLRLIGQKFSVRARIDVDGMELKESSSP 61
Query: 156 HKPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCL 207
+ P F +V GK + A T EEK +WI+ +
Sbjct: 62 NLPRTF--------------------LVSGKQRSLELQARTEEEKKDWIQAI 93
>gnl|CDD|219390 pfam07377, DUF1493, Protein of unknown function (DUF1493). This
family consists of several bacterial proteins of around
115 residues in length. Members of this family seem to
be found exclusively in Salmonella and Yersinia species
and several have been described as being putative
cytoplasmic proteins. The function of this family is
unknown.
Length = 110
Score = 26.9 bits (60), Expect = 4.2
Identities = 11/50 (22%), Positives = 16/50 (32%), Gaps = 6/50 (12%)
Query: 79 DKPFKIPEDDGNDLMHTF---FNPDKEGWLWK---QGGRYKSWKRRWFIL 122
D+ I DD +LM F FN D + + + W
Sbjct: 33 DEDLGIDGDDAEELMEKFFKKFNVDLSNFDIERYFHPEGDSPFSSIWNPF 82
>gnl|CDD|188300 TIGR03248, galactar-dH20, galactarate dehydratase. Galactarate
dehydratase converts D-galactarate to
5-dehydro-4-deoxyglucarate which is subsequently acted
on by GarL, tartronate semialdehyde reductase and
glycerate kinase (, GenProp0714).
Length = 507
Score = 27.8 bits (62), Expect = 4.6
Identities = 9/25 (36%), Positives = 17/25 (68%)
Query: 48 LIENSSGRYKSWKRRWFILNDKCLY 72
+++ +SGR K+W +W + ND L+
Sbjct: 477 ILDVASGRKKTWAEKWGLHNDLALF 501
>gnl|CDD|241275 cd01242, PH_ROCK, Rho-associated coiled-coil containing protein
kinase pleckstrin homology (PH) domain. ROCK is a
serine/threonine kinase that binds GTP-Rho. It consists
of a kinase domain, a coiled coil region and a PH
domain. The ROCK PH domain is interrupted by a C1
domain. ROCK plays a role in cellular functions, such as
contraction, adhesion, migration, and proliferation and
in the regulation of apoptosis. There are two ROCK
isoforms, ROCK1 and ROCK2. In ROCK2 the Rho Binding
Domain (RBD) and the PH domain work together in membrane
localization with RBD receiving the RhoA signal and the
PH domain receiving the phospholipid signal. PH domains
have diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They share
little sequence conservation, but all have a common
fold, which is electrostatically polarized. Less than
10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 126
Score = 27.0 bits (60), Expect = 4.9
Identities = 15/60 (25%), Positives = 29/60 (48%), Gaps = 6/60 (10%)
Query: 101 KEGWLW---KQGGRYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREV-HDRH 156
EGWL KQ + WK+++ +++ K + ++ DK+ P I + ++ H R
Sbjct: 3 LEGWLSIPNKQNIKRHGWKKQFVVVSSKKILFYNSEQDKQN--SDPFLIIDLSKLFHVRS 60
Score = 25.8 bits (57), Expect = 9.4
Identities = 11/41 (26%), Positives = 21/41 (51%), Gaps = 3/41 (7%)
Query: 9 KEGWLW---KQGGRYKSWKRRWFILNDKCLYYFEYTTDKSA 46
EGWL KQ + WK+++ +++ K + ++ DK
Sbjct: 3 LEGWLSIPNKQNIKRHGWKKQFVVVSSKKILFYNSEQDKQN 43
>gnl|CDD|241522 cd13371, PH_GAP1_mammal-like, GAP1(IP4BP) pleckstrin homology (PH)
domain. GAP1 (also called IP4BP, RASA3/Ras
GTPase-activating protein 3, and RAS p21 protein
activator (GTPase activating protein)
3/GAPIII/MGC46517/MGC47588)) is a member of the GAP1
family of GTPase-activating proteins, along with RASAL1,
GAP1(m), and CAPRI. With the notable exception of
GAP1(m), they all possess an arginine finger-dependent
GAP activity on the Ras-related protein Rap1.
GAP1(IP4BP) contains two C2 domains, a PH domain, a
RasGAP domain, and a BTK domain. Its C2 domains, like
those of GAP1M, do not contain the C2 motif that is
known to be required for calcium-dependent phospholipid
binding. GAP1(IP4BP) is regulated by the binding of its
PH domains to phophoinositides, PIP3
(phosphatidylinositol 3,4,5-trisphosphate) and PIP2
(phosphatidylinositol 4,5-bisphosphate). It suppresses
RAS, enhancing the weak intrinsic GTPase activity of RAS
proteins resulting in the inactive GDP-bound form of
RAS, allowing control of cellular proliferation and
differentiation. GAP1(IP4BP) binds tyrosine-protein
kinase, HCK. Members here include humans, chickens,
frogs, and fish. PH domains have diverse functions, but
in general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 125
Score = 26.5 bits (58), Expect = 5.7
Identities = 20/52 (38%), Positives = 29/52 (55%), Gaps = 6/52 (11%)
Query: 101 KEGWLWKQG-GR----YKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENI 147
KEG++ K+ GR K++K+RWF L + Y + D P IP+ENI
Sbjct: 18 KEGFMIKRAQGRKRFGMKNFKKRWFRLTNHEFTYHKSKGD-HPLCSIPIENI 68
>gnl|CDD|241279 cd01248, PH_PLC_ELMO1, Phospholipase C and Engulfment and cell
motility protein 1 pleckstrin homology domain. The
C-terminal region of ELMO1, the PH domain and Pro-rich
sequences, binds the SH3-containing region of DOCK2
forming a intermolecular five-helix bundle allowing for
DOCK mediated Rac1 activation. ELMO1, a mammalian
homolog of C. elegans CED-12, contains an N-terminal
RhoG-binding region, a ELMO domain, a PH domain, and a
C-terminal sequence with three PxxP motifs. Specificaly,
PLCs catalyze the cleavage of
phosphatidylinositol-4,5-bisphosphate (PIP2) and result
in the release of 1,2-diacylglycerol (DAG) and inositol
1,4,5-triphosphate (IP3). These products trigger the
activation of protein kinase C (PKC) and the release of
Ca2+ from intracellular stores. There are fourteen kinds
of mammalian phospholipase C which are are classified
into six isotypes (beta, gamma, delta, epsilon, zeta,
eta). All PLCs, except for PLCzeta, have a PH domain
which is for most part N-terminally located, though
lipid binding specificity is not conserved between them.
In addition PLC gamma contains a split PH domain within
its catalytic domain that is separated by 2 SH2 domains
and a single SH3 domain. PH domains have diverse
functions, but in general are involved in targeting
proteins to the appropriate cellular location or in the
interaction with a binding partner. They share little
sequence conservation, but all have a common fold, which
is electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 108
Score = 26.1 bits (58), Expect = 6.5
Identities = 14/98 (14%), Positives = 32/98 (32%), Gaps = 5/98 (5%)
Query: 111 RYKSWKRRWFILNDKCLYYFEYTTDKEPRGIIPLENIQVREVHDRHKPHCFELFTSGFEF 170
R S + D + + K+ ++ ++EV F+ +
Sbjct: 11 REGSKPKERTFYLDPDGTQITWESSKKKSEKKSIDISDIKEVRPGKDTKGFKRKKKSNKP 70
Query: 171 IKA-CKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCL 207
+ C + G + V A + +E + W++ L
Sbjct: 71 KEERCFSIIYGSHNKTLDLV----APSEDEANLWVEGL 104
>gnl|CDD|241444 cd13290, PH_ORP9, Human Oxysterol binding protein related protein 9
Pleckstrin homology (PH) domain. Human ORP9 is proposed
to function in regulation of Akt phosphorylation. ORP9
has 2 forms, a long (ORP9L) and a short (ORP9S). ORP9L
contains an N-terminal PH domain, a FFAT motif (two
phenylalanines in an acidic tract), and a C-terminal
OSBP-related domain. ORP1S is truncated and contains a
FFAT motif and an OSBP-related domain. Oxysterol binding
proteins are a multigene family that is conserved in
yeast, flies, worms, mammals and plants. In general
OSBPs and ORPs have been found to be involved in the
transport and metabolism of cholesterol and related
lipids in eukaryotes. They all contain a C-terminal
oxysterol binding domain, and most contain an N-terminal
PH domain. OSBP PH domains bind to membrane
phosphoinositides and thus likely play an important role
in intracellular targeting. They are members of the
oxysterol binding protein (OSBP) family which includes
OSBP, OSBP-related proteins (ORP), Goodpasture antigen
binding protein (GPBP), and Four phosphate adaptor
protein 1 (FAPP1). They have a wide range of purported
functions including sterol transport, cell cycle
control, pollen development and vessicle transport from
Golgi recognize both PI lipids and ARF proteins. PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 102
Score = 25.9 bits (57), Expect = 8.4
Identities = 29/115 (25%), Positives = 41/115 (35%), Gaps = 29/115 (25%)
Query: 102 EGWLWKQGGRYKSWKRRWFILNDKCLYYFEYTTDKEP------RGIIPLENIQVREVHDR 155
EG L K K W+ RWF+L+D Y T KE RG + L+ + +
Sbjct: 2 EGPLSKWTNVMKGWQYRWFVLDDN-AGLLSYYTSKEKMMRGSRRGCVRLKGAVIGIDDED 60
Query: 156 HKPHCFELFTSGFEFIKACKTDSEGKVVEGKHTVYRMSAATAEEKDEWIKCLSLH 210
FT V+ K + A AEE++ WI+ L
Sbjct: 61 DS-----TFTI---------------TVDQK--TFHFQARDAEERERWIRALEDT 93
Database: CDD.v3.10
Posted date: Mar 20, 2013 7:55 AM
Number of letters in database: 10,937,602
Number of sequences in database: 44,354
Lambda K H
0.323 0.140 0.487
Gapped
Lambda K H
0.267 0.0618 0.140
Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Sequences: 44354
Number of Hits to DB: 11,049,533
Number of extensions: 998347
Number of successful extensions: 1140
Number of sequences better than 10.0: 1
Number of HSP's gapped: 1053
Number of HSP's successfully gapped: 245
Length of query: 210
Length of database: 10,937,602
Length adjustment: 93
Effective length of query: 117
Effective length of database: 6,812,680
Effective search space: 797083560
Effective search space used: 797083560
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 16 ( 7.5 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 41 (21.9 bits)
S2: 57 (26.0 bits)