RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy9639
(321 letters)
>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 = 191 bits (488), Expect = 1e-61
Identities = 66/124 (53%), Positives = 92/124 (74%), Gaps = 1/124 (0%)
Query: 48 HPEALTYITGHMDGFLMKRGKESGKYHPRRFVLNEINDTIKYYVKE-KKEPKATLRISEL 106
+ Y++G +GFL KRGK++ ++ R+FVL+E T+KY+VKE KEPKA + I EL
Sbjct: 2 GVKQQPYLSGSKEGFLWKRGKDNNQFKQRKFVLSEREGTLKYFVKEDAKEPKAVISIKEL 61
Query: 107 NVVIAPSKIEHPHSLQLTFMKDGSTRHIYVYHEESQSIMNWYHAIRNAKFHRLQVAFPSA 166
N V P KI HP+ LQ+T++KDGSTR+I+VYHE+ + I++WY+AIR A+ H LQVAFP A
Sbjct: 62 NAVFQPEKIGHPNGLQITYLKDGSTRNIFVYHEDGKEIVDWYNAIRAARLHYLQVAFPGA 121
Query: 167 NDSE 170
+D E
Sbjct: 122 SDEE 125
>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 = 156 bits (396), Expect = 6e-48
Identities = 56/101 (55%), Positives = 72/101 (71%), Gaps = 1/101 (0%)
Query: 178 DFGREGWLWKTGPKNADAYRKRWFTLDYRKLMYHEEPLSAYPKGEIFLGHCSDGYTVRLG 237
DF +EG+L KTGPK D +RKRWFTLD R+LMY ++PL A+PKGEIF+G +GY+VR G
Sbjct: 1 DFLKEGYLEKTGPKQTDGFRKRWFTLDDRRLMYFKDPLDAFPKGEIFIGSKEEGYSVREG 60
Query: 238 VPPGAKD-QGFTFTLKTPQRWYQFSALSAPDRDQWIQAVQT 277
+P G K GF FTL TP R + SA + +R +WI A+Q
Sbjct: 61 LPAGIKGHWGFGFTLVTPDRTFVLSAETEEERREWITAIQK 101
>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 = 64.2 bits (157), Expect = 6e-13
Identities = 32/99 (32%), Positives = 49/99 (49%), Gaps = 12/99 (12%)
Query: 181 REGWLWKTGPKNADAYRKRWFTLDYRKLMYHEEPLSAYPKGEIFLGHCSDGYTVRLGVPP 240
+EG+LWK G +N +Y+KRWF L L Y E+ P G I L +G TV L
Sbjct: 10 KEGYLWKKGERN-TSYQKRWFVLKGNLLFYFEKKGDREPLGVIVL----EGCTVEL---- 60
Query: 241 GAKDQGFTFTLKTP---QRWYQFSALSAPDRDQWIQAVQ 276
++ + F ++ R Y +A S D + W++A+
Sbjct: 61 SEDEEPYAFAIRFDGPGSRSYVLAAESQEDMESWMKALS 99
Score = 36.1 bits (84), Expect = 0.004
Identities = 31/108 (28%), Positives = 51/108 (47%), Gaps = 14/108 (12%)
Query: 59 MDGFLMKRGKESGKYHPRRFVL--NEINDTIKYYV--KEKKEPKATLRISELNVVIAPSK 114
+G+L K+G+ + Y R FVL N + +Y K +EP + + E + S+
Sbjct: 10 KEGYLWKKGERNTSYQKRWFVLKGN-----LLFYFEKKGDREP-LGVIVLE-GCTVELSE 62
Query: 115 IEHPHSLQLTFMKDGSTRHIYVYHEESQSIM-NWYHAIRNAKFHRLQV 161
E P++ + F DG YV ESQ M +W A+ A + L++
Sbjct: 63 DEEPYAFAIRF--DGPGSRSYVLAAESQEDMESWMKALSRASYDYLRL 108
>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 = 60.4 bits (147), Expect = 7e-12
Identities = 29/96 (30%), Positives = 39/96 (40%), Gaps = 10/96 (10%)
Query: 181 REGWLWKTGPKNADAYRKRWFTLDYRKLMYHEEPLSAYPKGEIFLGHCSDGYTVRLGVPP 240
+ GWL K P+ ++KRW D L Y Y KG I L S TVR
Sbjct: 2 KSGWLDKLSPQGNYVFQKRWVVFDGDSLRYFNSEKEMYSKGIIPL---SSIKTVRS---- 54
Query: 241 GAKDQGFTFTLKTPQRWYQFSALSAPDRDQWIQAVQ 276
D F + T R + F A S +R+ W+ +
Sbjct: 55 -VGDN--KFEVVTGNRTFVFRAESEDERNLWVSTLM 87
>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 = 60.6 bits (147), Expect = 7e-12
Identities = 30/100 (30%), Positives = 49/100 (49%), Gaps = 8/100 (8%)
Query: 181 REGWLWKTGPKNADAYRKRWFTLDYRKLMYHEEPLSAY---PKGEIFLGHCSDGYTVRLG 237
+EGWL+K +++KR+F L L+Y++ PKG I L G TVR
Sbjct: 3 KEGWLYKKSGGGKKSWKKRYFVLFNSTLLYYKSKKDKKSYKPKGSIDL----SGCTVREA 58
Query: 238 VPPGAKDQGFTFTLKTPQR-WYQFSALSAPDRDQWIQAVQ 276
P + + F +KT R A S +R++W++A++
Sbjct: 59 PDPDSSKKPHCFEIKTSDRKTLLLQAESEEEREKWVEALR 98
Score = 44.8 bits (106), Expect = 3e-06
Identities = 29/104 (27%), Positives = 45/104 (43%), Gaps = 14/104 (13%)
Query: 59 MDGFLMKRGKESGK-YHPRRFVLNEINDTIKYYVKEKK----EPKATLRISELNVVIAP- 112
+G+L K+ K + R FVL N T+ YY +K +PK ++ +S V AP
Sbjct: 3 KEGWLYKKSGGGKKSWKKRYFVLF--NSTLLYYKSKKDKKSYKPKGSIDLSGCTVREAPD 60
Query: 113 -SKIEHPHSLQLTFMKDGSTRHIYVYHEESQSIMN-WYHAIRNA 154
+ PH ++ S R + ES+ W A+R A
Sbjct: 61 PDSSKKPHCFEIKT----SDRKTLLLQAESEEEREKWVEALRKA 100
>gnl|CDD|215766 pfam00169, PH, PH domain. PH stands for pleckstrin homology.
Length = 101
Score = 60.2 bits (146), Expect = 1e-11
Identities = 27/99 (27%), Positives = 47/99 (47%), Gaps = 7/99 (7%)
Query: 181 REGWLWKTGPKNADAYRKRWFTLDYRKLMYHEEPLSAY--PKGEIFLGHCSDGYTVRLGV 238
+EGWL K G +++KR+F L L+Y+++ + PKG I L G V
Sbjct: 3 KEGWLLKKGSGGRKSWKKRYFVLFDGVLLYYKDSKKSSSRPKGSIPL----SGCQVTKVP 58
Query: 239 PPGAKDQGFTFTLKTPQRW-YQFSALSAPDRDQWIQAVQ 276
+ F ++T R + A S +R +W++A++
Sbjct: 59 DSEDGKRKNCFEIRTGDRETFLLQAESEEERKEWVKAIR 97
Score = 44.4 bits (105), Expect = 5e-06
Identities = 25/104 (24%), Positives = 43/104 (41%), Gaps = 13/104 (12%)
Query: 58 HMDGFLMKRGKESGK-YHPRRFVLNEINDTIKYY---VKEKKEPKATLRISELNVVIAPS 113
+G+L+K+G K + R FVL + + YY K PK ++ +S V P
Sbjct: 2 IKEGWLLKKGSGGRKSWKKRYFVLF--DGVLLYYKDSKKSSSRPKGSIPLSGCQVTKVPD 59
Query: 114 --KIEHPHSLQLTFMKDGSTRHIYVYHEESQSIMN-WYHAIRNA 154
+ + ++ R ++ ES+ W AIR+A
Sbjct: 60 SEDGKRKNCFEIRT----GDRETFLLQAESEEERKEWVKAIRSA 99
>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 = 57.3 bits (139), Expect = 1e-10
Identities = 37/100 (37%), Positives = 47/100 (47%), Gaps = 4/100 (4%)
Query: 182 EGWLWKTGPKNADAYRKRWFTLDYRK--LMYHEEPLSAYPKGEIFLGHCSDGYTVRLGV- 238
EG+L+K G +++RWF LD K L Y+E KG I L Y +
Sbjct: 6 EGYLYKRGAL-LKGWKQRWFVLDLTKHQLRYYESKEDTKCKGVIDLQEVESVYPDTPSIG 64
Query: 239 PPGAKDQGFTFTLKTPQRWYQFSALSAPDRDQWIQAVQTG 278
P + D G F LKT +R Y F A SA QWI +QT
Sbjct: 65 APKSPDPGAFFELKTNKRVYYFLAPSAEAAQQWIDVIQTL 104
Score = 30.3 bits (69), Expect = 0.45
Identities = 21/99 (21%), Positives = 37/99 (37%), Gaps = 4/99 (4%)
Query: 59 MDGFLMKRGKESGKYHPRRFVLNEINDTIKYYV-KEKKEPKATLRISELNVVIAPSKIEH 117
+G+L KRG + R FVL+ ++YY KE + K + + E+ V +
Sbjct: 5 CEGYLYKRGALLKGWKQRWFVLDLTKHQLRYYESKEDTKCKGVIDLQEVESVYPDTPSIG 64
Query: 118 PHSL---QLTFMKDGSTRHIYVYHEESQSIMNWYHAIRN 153
F + R Y +++ W I+
Sbjct: 65 APKSPDPGAFFELKTNKRVYYFLAPSAEAAQQWIDVIQT 103
>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 = 54.3 bits (130), Expect = 1e-09
Identities = 35/96 (36%), Positives = 47/96 (48%), Gaps = 6/96 (6%)
Query: 181 REGWLWKTGPKNADAYRKRWFTLDYRKLMY--HEEPLSAYPKGEIFLGHCSDGYTVRLGV 238
+EGWL K G K +++KRWF L L+Y ++ S PKG I L SDG V L V
Sbjct: 1 KEGWLKKRGGKGLKSWKKRWFVLFDDVLLYYKSKKDSSKKPKGLIPL---SDGLEVEL-V 56
Query: 239 PPGAKDQGFTFTLKTPQRWYQFSALSAPDRDQWIQA 274
K F R Y A S +R++W++A
Sbjct: 57 SSSGKPNCFELVTPDRGRTYYLQAESEEEREEWLEA 92
Score = 40.0 bits (93), Expect = 1e-04
Identities = 29/97 (29%), Positives = 42/97 (43%), Gaps = 10/97 (10%)
Query: 59 MDGFLMKRG-KESGKYHPRRFVLNEINDTIKYYVKEK---KEPKATLRISELNVVIAPSK 114
+G+L KRG K + R FVL +D + YY +K K+PK + +S+ V S
Sbjct: 1 KEGWLKKRGGKGLKSWKKRWFVLF--DDVLLYYKSKKDSSKKPKGLIPLSDGLEVELVSS 58
Query: 115 IEHPHSLQLTFMKDGSTRHIYVYHEESQSIMN-WYHA 150
P+ +L G T Y ES+ W A
Sbjct: 59 SGKPNCFELVTPDRGRT---YYLQAESEEEREEWLEA 92
>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 = 51.1 bits (123), Expect = 2e-08
Identities = 33/101 (32%), Positives = 48/101 (47%), Gaps = 6/101 (5%)
Query: 181 REGWLWKTGPKNADAYRKRWFTLDYRKLMYHEEPLSAYPKGEIFLGHCSDGYTVRLGVPP 240
++G+LWK G +R+RWF L L Y++ KGEI L D + P
Sbjct: 10 KKGYLWKKGHLLPT-WRERWFVLKPNSLSYYKSEDLKEKKGEIAL----DSNC-CVESLP 63
Query: 241 GAKDQGFTFTLKTPQRWYQFSALSAPDRDQWIQAVQTGFTF 281
+ + F +KTP + Y+ SA R +WIQA+QT
Sbjct: 64 DREGKKCRFCVKTPDKTYELSASDHKTRQEWIQAIQTAIRL 104
>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 = 50.7 bits (122), Expect = 2e-08
Identities = 27/88 (30%), Positives = 37/88 (42%), Gaps = 16/88 (18%)
Query: 195 AYRKRWFTLDYRK--LMYHEEPLSAYPKGEIFLGHCSDGYTVRLGVPPGAKDQGFTFTLK 252
++ RWF D RK L Y+ P P G I L + Y + + TF +
Sbjct: 17 TWKSRWFVFDERKCQLYYYRSPQDITPLGSIDLSGAAFSYD--------PEAEKGTFEIH 68
Query: 253 TPQRWYQFSALSAPDRDQ---WIQAVQT 277
TP R Y L A DR W+Q +Q+
Sbjct: 69 TPGRVY---ILKASDRQAMLYWLQELQS 93
>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 = 50.3 bits (121), Expect = 3e-08
Identities = 30/96 (31%), Positives = 45/96 (46%), Gaps = 11/96 (11%)
Query: 183 GWLWK---TGPKNADAYRKRWFTLDYRKLMYHEEPLSAYPKGEIFLGHCSDGYTVRLGVP 239
GWL K +G KN ++KRWF L L Y+++P G I L YT+ P
Sbjct: 11 GWLHKQGGSGLKN---WKKRWFVLKDNCLYYYKDPEEEKALGSILL----PSYTISPASP 63
Query: 240 PGAKDQGFTFTL-KTPQRWYQFSALSAPDRDQWIQA 274
++ F F R Y F+A + + +QW++A
Sbjct: 64 SDEINRKFAFKAEHAGMRTYYFAADTQEEMEQWMKA 99
>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 = 50.0 bits (120), Expect = 6e-08
Identities = 31/103 (30%), Positives = 47/103 (45%), Gaps = 11/103 (10%)
Query: 177 RDFGREGWLWKTGPKNADAYRKRWFTLDYRKLMYHEEP-LSAYPKGEIFLGHCSDGYTVR 235
D + GWL K G +R+RWF L KL Y ++ + P+G I L C
Sbjct: 5 SDPEKAGWLTKQGGSIKT-WRRRWFVLKQGKLFYFKDEDPDSEPRGVIDLSDC------- 56
Query: 236 LGVPPGAKDQG--FTFTLKTPQRWYQFSALSAPDRDQWIQAVQ 276
L V + F F + TP+R + A S ++++WI A+
Sbjct: 57 LTVKSAEEATNKEFAFEVSTPERTFYLIADSEKEKEEWISAIG 99
>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 = 47.7 bits (114), Expect = 3e-07
Identities = 26/99 (26%), Positives = 45/99 (45%), Gaps = 11/99 (11%)
Query: 181 REGWLWKTGPKNADAYRKRWFTLDYRKLMYHEEPL---SAYPKGEIFLGHCSDGYTVRLG 237
++GWL K ++K WF L L Y+ + + + G I L C++ +
Sbjct: 1 KKGWLMKQD--EDGEWKKHWFVLRDASLRYYRDSVAEEAGELDGVIDLSTCTNVTEL--- 55
Query: 238 VPPGAKDQGFTFTLKTPQRWYQFSALSAPDRDQWIQAVQ 276
P ++ GF +R Y SA+++ R WIQA++
Sbjct: 56 --PVQRNYGFQIKTWDGKR-YVLSAMTSGIRRNWIQAIR 91
>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 = 47.3 bits (113), Expect = 6e-07
Identities = 34/132 (25%), Positives = 56/132 (42%), Gaps = 22/132 (16%)
Query: 181 REGWLWKTGPKNADAYRKRWFTLDYRKLMYHEEPLSAYPKGEIFLGHCSDGYTVRLGVPP 240
REGWL K G + ++++RWF L L Y E P+G I L + +VR V
Sbjct: 5 REGWLLKLGGR-VKSWKRRWFILTDNCLYYFEYTTDKEPRGIIPL----ENLSVRE-VED 58
Query: 241 GAKDQGFTFTLKTPQRWYQFSALSAPDRDQWIQAVQTGFTFTLKTPQR-WYQFSALSAPD 299
K F F L ++ I+A +T + Y+ SA + +
Sbjct: 59 SKKP--FCFEL-------------YSPSNEVIKACKTDSDGKVVEGNHTVYRISAATEEE 103
Query: 300 RDQWIQAVQTVL 311
D+WI++++ +
Sbjct: 104 MDEWIKSIKASI 115
>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 = 47.0 bits (112), Expect = 6e-07
Identities = 30/97 (30%), Positives = 39/97 (40%), Gaps = 13/97 (13%)
Query: 183 GWLWK-TGPKNA---DAYRKRWFTLDYRKLMYHE-EPLSAYPKGEIFLGHCSDGYTVRLG 237
GWL+K G + ++ RWF L L Y+E + A G I + +
Sbjct: 11 GWLYKKGGGSSTLSRKNWKSRWFVLRDTVLKYYENDQEGAKALGTIDIRSAKE------I 64
Query: 238 VPPGAKDQGFTFTLKTPQRWYQFSALSAPDRDQWIQA 274
V K+ GF T TP R Y F A S D QW
Sbjct: 65 VDNTPKENGFDIT--TPSRTYHFVAESPEDASQWFSV 99
>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 = 46.8 bits (112), Expect = 9e-07
Identities = 27/91 (29%), Positives = 45/91 (49%), Gaps = 9/91 (9%)
Query: 189 GPKNADAYRKRWFTLDYRKLMYHE--EPLSAYPKGEIFLGHCSDGYTVRLGVPPGAKDQG 246
+ ++ +++RWF L L Y + EP S P G I L +C V+ P
Sbjct: 8 FFRKSEVFKERWFKLRGNLLFYFKSNEPGSE-PAGVIVLENC----RVQRE-EPDPGGFA 61
Query: 247 FTFTLKTPQRWYQFSALSAPDRDQWIQAVQT 277
F+ K ++ Y+FS S +RD+WI+A++
Sbjct: 62 FSLVFKDEKK-YRFSCRSEEERDEWIEAIKQ 91
>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 = 45.0 bits (107), Expect = 2e-06
Identities = 30/99 (30%), Positives = 45/99 (45%), Gaps = 12/99 (12%)
Query: 181 REGWLWKTGPKNADAYRKRWFTLDYRKLMY--HEEPLSAYPKGEIFLGHCSDGYTVRLGV 238
+ G+L K G K +++RWF L +L Y + P+G+I L DG
Sbjct: 1 KAGYLTKLGGKVK-TWKRRWFVLKNGELFYYKSPNDVIRKPQGQIAL----DGSCEIA-- 53
Query: 239 PPGAKDQGFTFTLKTPQRWYQFSALSAPDRDQWIQAVQT 277
Q TF + T +R Y +A S D D+WI+ +Q
Sbjct: 54 -RAEGAQ--TFEIVTEKRTYYLTADSENDLDEWIRVIQN 89
>gnl|CDD|216485 pfam01412, ArfGap, Putative GTPase activating protein for Arf.
Putative zinc fingers with GTPase activating proteins
(GAPs) towards the small GTPase, Arf. The GAP of ARD1
stimulates GTPase hydrolysis for ARD1 but not ARFs.
Length = 117
Score = 44.5 bits (106), Expect = 5e-06
Identities = 15/50 (30%), Positives = 24/50 (48%), Gaps = 1/50 (2%)
Query: 1 MKQIGNNVSKLKYEMRVPASYKVPTSSCPQVLLKEWIRSKYEREEFRHPE 50
MK GN + +E +P P+SS + + +IR+KY + F E
Sbjct: 69 MKAGGNKRANEFWEANLPPPKPPPSSSDREKR-ESFIRAKYVEKLFAEAE 117
>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 = 41.2 bits (97), Expect = 9e-05
Identities = 34/119 (28%), Positives = 50/119 (42%), Gaps = 18/119 (15%)
Query: 177 RDFGREGWLWKTGPKNADAYR--KRWFTLDYRKLMYHEEPLSAYPKGEIFLGHCSDGYTV 234
+D R G+L K K++D + +WF L L Y E S+ P G L C Y
Sbjct: 3 KDGTRRGYLSK---KSSDNSKWHTKWFALYQNLLFYFENESSSRPSGLYLLEGC---YCE 56
Query: 235 RLGVPPGA--------KDQGFTFTLKTP-QRWYQFSALSAPDRDQWIQAV-QTGFTFTL 283
R P A K FT + + QR Y+ + D D W++A+ Q ++ L
Sbjct: 57 RAPSPKRAGKGKDHLEKQHYFTISFRHENQRQYELRTETETDCDTWVEAIKQASYSKLL 115
>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 = 40.9 bits (96), Expect = 1e-04
Identities = 26/100 (26%), Positives = 40/100 (40%), Gaps = 17/100 (17%)
Query: 181 REGWLWKTGPKNADAYRKRWFTLDYRKLMYHEEP-----LSAYPKGEIFLGHCSDGYTVR 235
+ G+L K G + ++KRWF L KL Y++ L +I +T
Sbjct: 8 KAGYLEKKGERR-KTWKKRWFVLRPTKLAYYKNDKEYRLLRLIDLTDI--------HTC- 57
Query: 236 LGVPPGAKDQGFTFTLKTPQRWYQFSALSAPDRDQWIQAV 275
K TF + TP R + A S + + WI A+
Sbjct: 58 --TEVQLKKHDNTFGIVTPARTFYVQADSKAEMESWISAI 95
Score = 29.7 bits (67), Expect = 0.73
Identities = 10/29 (34%), Positives = 15/29 (51%)
Query: 279 FTFTLKTPQRWYQFSALSAPDRDQWIQAV 307
TF + TP R + A S + + WI A+
Sbjct: 67 NTFGIVTPARTFYVQADSKAEMESWISAI 95
Score = 28.5 bits (64), Expect = 1.9
Identities = 26/99 (26%), Positives = 44/99 (44%), Gaps = 11/99 (11%)
Query: 60 DGFLMKRGKESGKYHPRRFVLNEINDTIKYYVKEKKEPKATLRISELNVVIAPSKIE--- 116
G+L K+G+ + R FVL + YY K KE + LR+ +L + ++++
Sbjct: 9 AGYLEKKGERRKTWKKRWFVLR--PTKLAYY-KNDKEYR-LLRLIDLTDIHTCTEVQLKK 64
Query: 117 HPHSLQLTFMKDGSTRHIYVYHEESQSIMNWYHAIRNAK 155
H + TF R YV + + +W AI A+
Sbjct: 65 HDN----TFGIVTPARTFYVQADSKAEMESWISAINLAR 99
>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 = 41.1 bits (97), Expect = 1e-04
Identities = 29/111 (26%), Positives = 52/111 (46%), Gaps = 22/111 (19%)
Query: 181 REGWLWKTGPKNAD--------AYRKRWFTL-----DYRKLMYHEEPLSAYPKGEIFLGH 227
+EG+L+K GP+N+ ++++R+F L L ++++ S KG I+L
Sbjct: 8 KEGYLYK-GPENSSMFISLAMKSFKRRFFHLKQLVDGSYILEFYKDEKSKEAKGTIYLDS 66
Query: 228 CSDGYTVRLGVPPGAKDQGFTFTLK-TPQRWYQFSALSAPDRDQWIQAVQT 277
C+ GV +K + F F L+ + Y +A S + D WI +
Sbjct: 67 CT-------GVVQNSKRRKFCFELRMQDGKSYVLAAESESEMDDWISKLNK 110
>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 = 40.5 bits (95), Expect = 1e-04
Identities = 31/104 (29%), Positives = 47/104 (45%), Gaps = 15/104 (14%)
Query: 181 REGWLWKTGPK---NADAYRKRWFTL-------DYRKLMYHEEPLSAYPKGEIFLGHCSD 230
EGWL K+ P+ A++KRWF L D L Y+++ P G I L C
Sbjct: 1 YEGWLRKSPPEKKIKRAAWKKRWFVLRSGRLSGDPDVLEYYKDDHCKKPIGAIDLDECEQ 60
Query: 231 GYTVRLGVPPGAKDQ--GFTFTLKTPQRWYQFSALSAPDRDQWI 272
V G+ K+ F F + TP+R Y A + + ++W+
Sbjct: 61 ---VDAGLTFEYKEFKNQFIFDIVTPKRTYYLVAETEEEMNKWV 101
>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 = 40.2 bits (95), Expect = 2e-04
Identities = 25/97 (25%), Positives = 37/97 (38%), Gaps = 8/97 (8%)
Query: 181 REGWLWKTGPKNADAYRKRWFTLDYRKLMYHEEPLSAY-PKGEIFLGHCSDGYTVRLGVP 239
+ G+L K G + Y + WF L L ++ Y P G I L +
Sbjct: 31 KSGYLSKRGKRTP-RYNRYWFVLKGDVLSWYRSSTDLYFPHGTIDLRYGISAEITDKDKE 89
Query: 240 PGAKDQGFTFTLKTPQRWYQFSALSAPDRDQWIQAVQ 276
F + T R Y F A S P +W++A+Q
Sbjct: 90 T------THFKITTNSRTYTFKADSEPSAKEWVKALQ 120
Score = 34.5 bits (80), Expect = 0.023
Identities = 12/33 (36%), Positives = 17/33 (51%)
Query: 278 GFTFTLKTPQRWYQFSALSAPDRDQWIQAVQTV 310
F + T R Y F A S P +W++A+Q V
Sbjct: 90 TTHFKITTNSRTYTFKADSEPSAKEWVKALQKV 122
>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 = 39.1 bits (92), Expect = 3e-04
Identities = 28/104 (26%), Positives = 49/104 (47%), Gaps = 14/104 (13%)
Query: 181 REGWLWKTGPKNADAYRKRWFTLDYRKLMY----HEEPLSAYPKGEIFLGHCSDGYTVRL 236
+EG+L+K +++RWF++ +L+Y ++ + ++ L C TV+
Sbjct: 1 KEGYLFKRSSNAFKTWKRRWFSIQNGQLVYQKRFKKDTPTVV-VEDLRL--C----TVK- 52
Query: 237 GVPPGAKDQGFTFTLKTPQRWYQFSALSAPDRDQWIQAVQTGFT 280
P D+ F F + +P + Y A S DR WIQA+Q
Sbjct: 53 --PCEDIDRRFCFEVVSPTKSYMLQAESEEDRQAWIQAIQAAIA 94
>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 = 39.0 bits (91), Expect = 4e-04
Identities = 24/84 (28%), Positives = 38/84 (45%), Gaps = 8/84 (9%)
Query: 196 YRKRWFTLDYRKLMYHEEPLSAYPKGEIFLGHCSDGYTVRLGVPPGAKD--QGFTFTLKT 253
++KRW L Y+ KGE + DGY R+ P KD + F +
Sbjct: 21 WQKRWCVLSNTAFYYYGSEKDKQQKGEFAI----DGYRARM-NPTLRKDSKKDCCFEISA 75
Query: 254 P-QRWYQFSALSAPDRDQWIQAVQ 276
P +R YQF+A S + +W+ ++
Sbjct: 76 PDKRVYQFTAASPKEAREWVDQIK 99
>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 = 38.9 bits (91), Expect = 4e-04
Identities = 28/105 (26%), Positives = 43/105 (40%), Gaps = 10/105 (9%)
Query: 174 LLTRDFGREGWLWKTG--PKNADAYRKRWFTLDYRKLMYHEEPLSAYPKGEIFLGHCSDG 231
L RD G+L K G K + R+ + + Y + SA PKG L +G
Sbjct: 4 TLPRDVTHSGYLTKKGGSQKQLLKWPLRYVIIHKGCVYYFKNSQSAKPKGVFSL----NG 59
Query: 232 YTVRLGVPPGAKDQGFTFTLKTPQ---RWYQFSALSAPDRDQWIQ 273
Y R +K + F F + R + FSA S + +W++
Sbjct: 60 YNRRAAEETTSKKK-FVFKIIHLSKDHRTWYFSAKSEDEMKEWME 103
>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 = 38.4 bits (90), Expect = 4e-04
Identities = 23/93 (24%), Positives = 38/93 (40%), Gaps = 9/93 (9%)
Query: 181 REGWLWKTGPKNADAYRKRWFTLDYRKLMYHEEPLSAYPKGEIFLGHCSDGYTVRLGV-P 239
+EG+L K G ++ RWF L +L Y + P + L CS V
Sbjct: 5 KEGYLTKQG-GIVKNWKTRWFVLRKNELKYFKTRTDTKPIRTLDLTECS-------SVQA 56
Query: 240 PGAKDQGFTFTLKTPQRWYQFSALSAPDRDQWI 272
++ + F L P R + A + + D+W+
Sbjct: 57 DYSQGKPNCFRLVFPDRTFYMYAKTEEEADEWV 89
>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 = 38.8 bits (91), Expect = 5e-04
Identities = 31/107 (28%), Positives = 50/107 (46%), Gaps = 17/107 (15%)
Query: 181 REGWLWKTGPK--NADAYRKRWFTLDYRKLMYHEEPLSAY----PKGEIFLGHCSDGYTV 234
++G+L+K K N + +K D +L YH L Y EI L TV
Sbjct: 6 KQGYLYKRSSKSLNKEWKKKYVTLCDDGRLTYHPS-LHDYMENVHGKEIDLLRT----TV 60
Query: 235 RL--GVPPGAKDQG-FTFTL--KTPQRWYQFSALSAPDRDQWIQAVQ 276
++ PP A + F F + ++W F A S+ +RD+W+QA++
Sbjct: 61 KVPGKRPPRASSKSAFEFIIVSLDGKQW-HFEAASSEERDEWVQAIE 106
>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 = 37.7 bits (88), Expect = 0.001
Identities = 33/110 (30%), Positives = 46/110 (41%), Gaps = 18/110 (16%)
Query: 183 GWLWKTGP--------KNADAYRKRWFTLDYRKLMYHEEPLSAYPKGEIFLGHCSDGYTV 234
G+L+KT K + + +RW L+ L Y+E S P GEI + V
Sbjct: 6 GFLYKTASMAKPTTERKGKEEFSRRWCVLEDGFLSYYESDKSTTPNGEIDISE-----IV 60
Query: 235 RLGVPPGAKDQG----FTFTLKTP-QRWYQFSALSAPDRDQWIQAVQTGF 279
L V P D G FTF L +R Y F +A +W +A+ F
Sbjct: 61 CLAVNPPDTDPGHGFEFTFELYLESERLYLFGTETAEAAHEWTKAIAKAF 110
>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 = 36.5 bits (85), Expect = 0.003
Identities = 31/101 (30%), Positives = 45/101 (44%), Gaps = 14/101 (13%)
Query: 183 GWLWKTGPKNADAY-RKRWFTLDYRKLMYHEEPLSAYPK-GEIFLGH-CSDGYTVRLGVP 239
GWL K G K + +KRWF L L Y++ K G + L CS V VP
Sbjct: 17 GWLLKEGGKGGNLTKKKRWFVLTPNSLDYYKSSERNALKLGSLVLNSLCS----V---VP 69
Query: 240 P---GAKDQGF-TFTLKTPQRWYQFSALSAPDRDQWIQAVQ 276
P K+ G+ TFT+ + Y + ++W+ A+Q
Sbjct: 70 PDEKVYKETGYWTFTVHGRKHSYYLYTKLQEEANRWVNAIQ 110
>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 = 35.7 bits (83), Expect = 0.005
Identities = 25/99 (25%), Positives = 39/99 (39%), Gaps = 19/99 (19%)
Query: 183 GWLWKTGPKNADAYRKRWFTLDYRKL-MYHEE----PLSAYPKGEIFLGHCSDGYTVRLG 237
GWL K + ++KRWF L +L Y +E E+
Sbjct: 10 GWLLKRS-RKTKTWKKRWFVLRPCQLSYYKDEKEYKLRRVINLSEL------------TA 56
Query: 238 VPPGAKDQ-GFTFTLKTPQRWYQFSALSAPDRDQWIQAV 275
V P + F + TP + Y F A S D ++W++A+
Sbjct: 57 VAPLKDKKRKNVFAIYTPSKNYHFQASSEKDANEWVEAI 95
Score = 34.9 bits (81), Expect = 0.010
Identities = 10/32 (31%), Positives = 18/32 (56%)
Query: 276 QTGFTFTLKTPQRWYQFSALSAPDRDQWIQAV 307
+ F + TP + Y F A S D ++W++A+
Sbjct: 64 KRKNVFAIYTPSKNYHFQASSEKDANEWVEAI 95
Score = 29.1 bits (66), Expect = 1.1
Identities = 23/100 (23%), Positives = 44/100 (44%), Gaps = 5/100 (5%)
Query: 59 MDGFLMKRGKESGKYHPRRFVLNEINDTIKYYVKEKKEPKATLRISELNVVIAPSKIEHP 118
G+L+KR +++ + R FVL + YY K++KE K R+ L+ + A + ++
Sbjct: 8 KSGWLLKRSRKTKTWKKRWFVLR--PCQLSYY-KDEKEYKL-RRVINLSELTAVAPLKDK 63
Query: 119 HSLQLTFMKDGSTRHIYVYHEESQSIMNWYHAIRNAKFHR 158
+ F +++ + + W AIR R
Sbjct: 64 KR-KNVFAIYTPSKNYHFQASSEKDANEWVEAIREESRSR 102
>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 = 35.0 bits (81), Expect = 0.009
Identities = 13/48 (27%), Positives = 23/48 (47%)
Query: 59 MDGFLMKRGKESGKYHPRRFVLNEINDTIKYYVKEKKEPKATLRISEL 106
G L+ + +E K R F L+ I + +KK K ++ IS++
Sbjct: 2 QQGTLLLKYREGSKPKERTFYLDPDGTQITWESSKKKSEKKSIDISDI 49
>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 = 34.7 bits (80), Expect = 0.012
Identities = 34/139 (24%), Positives = 52/139 (37%), Gaps = 41/139 (29%)
Query: 181 REGWLWKTGPK---NADAYRKRWFTLDYRK------LMYHEEPLSAYPKGEIFLGHCSDG 231
EGWL K+ P+ +R+R+F L + L Y+ + KG I L C
Sbjct: 5 YEGWLTKSPPEKRIWRAKWRRRYFVLRQSEIPGQYFLEYYTDRTCRKLKGSIDLDQCEQ- 63
Query: 232 YTVRLGVPPGAKDQGFTFTLKTPQRWYQFSALSAPDRDQWIQAVQTGFTFTLKTPQRWYQ 291
D G TF K + DQ I F ++TP+R Y
Sbjct: 64 -----------VDAGLTFETKNKLK------------DQHI--------FDIRTPKRTYY 92
Query: 292 FSALSAPDRDQWIQAVQTV 310
A + + ++W+ + TV
Sbjct: 93 LVADTEDEMNKWVNCICTV 111
>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 = 35.3 bits (82), Expect = 0.014
Identities = 18/52 (34%), Positives = 22/52 (42%), Gaps = 12/52 (23%)
Query: 181 REGWLWK-------TGPKNADAYRKRWFTLDYRKLMYHEEPLS--AYPKGEI 223
+EG L K GP N Y++RWF L L Y+E KG I
Sbjct: 1 KEGLLVKRSQGKKRFGPVN---YKERWFVLTKSSLSYYEGDGGKRGKEKGSI 49
>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 = 34.5 bits (79), Expect = 0.014
Identities = 25/84 (29%), Positives = 37/84 (44%), Gaps = 8/84 (9%)
Query: 196 YRKRWFTLDYRKLMYHEEPLSAYPKGEIFLGHCSDGYTVRLGVPPGAKD--QGFTFTLKT 253
++KRW L R Y+ S PKG + ++ P KD + F L T
Sbjct: 21 WQKRWCVLTTRAFYYYANEKSKQPKGGFLI----KDSLAQM-APHLRKDSRRDSCFELTT 75
Query: 254 P-QRWYQFSALSAPDRDQWIQAVQ 276
P QR Y+F+A S + W+ +Q
Sbjct: 76 PNQRTYEFTAASPSEARDWVDQIQ 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 = 34.9 bits (80), Expect = 0.016
Identities = 31/105 (29%), Positives = 43/105 (40%), Gaps = 14/105 (13%)
Query: 183 GWLWKTGPKNA---DAYRKRWFTLDYRK-------LMYHEEPLSAYPKGEIFLGHCSDGY 232
GWL K+ P+ A+RKRWF L + L Y+ S P I L C
Sbjct: 10 GWLIKSPPEKKLKRYAWRKRWFVLRRGRMSGNPDVLEYYRNKHSKKPIRVIDLNECE--V 67
Query: 233 TVRLGVPPGAKD--QGFTFTLKTPQRWYQFSALSAPDRDQWIQAV 275
T GV K+ F F +KT R + A + + W+Q +
Sbjct: 68 TKHAGVNFIKKEFQNNFVFIVKTTTRTFYLVAKTEEEMQDWVQNI 112
>gnl|CDD|241408 cd13254, PH2_ARAP, ArfGAP with RhoGAP domain, ankyrin repeat and PH
domain Pleckstrin homology (PH) domain, repeat 2. 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
second 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 = 90
Score = 33.4 bits (77), Expect = 0.023
Identities = 11/28 (39%), Positives = 19/28 (67%)
Query: 249 FTLKTPQRWYQFSALSAPDRDQWIQAVQ 276
F L TP R + F+A S ++ +W++A+Q
Sbjct: 63 FDLTTPYRIFSFTAESEREKQEWVEALQ 90
Score = 33.4 bits (77), Expect = 0.023
Identities = 11/28 (39%), Positives = 19/28 (67%)
Query: 281 FTLKTPQRWYQFSALSAPDRDQWIQAVQ 308
F L TP R + F+A S ++ +W++A+Q
Sbjct: 63 FDLTTPYRIFSFTAESEREKQEWVEALQ 90
>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 = 33.0 bits (76), Expect = 0.035
Identities = 17/50 (34%), Positives = 26/50 (52%), Gaps = 3/50 (6%)
Query: 182 EGWLWKTGPKNADAYRKRWFTLDYRK--LMYHEEPLSAYPKGEIFLGHCS 229
EGWL K K + +R+F L+++ L Y+ P S +G+I L S
Sbjct: 3 EGWLLKKRRKKMQGFARRYFVLNFKYGTLSYYFNPNSPV-RGQIPLRLAS 51
>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 = 33.4 bits (76), Expect = 0.036
Identities = 25/84 (29%), Positives = 38/84 (45%), Gaps = 8/84 (9%)
Query: 196 YRKRWFTLDYRKLMYHEEPLSAYPKGEIFLGHCSDGYTVRLG---VPPGAKDQGFTFTLK 252
++KRW L Y+ KGE + DGYTVR+ KD F
Sbjct: 21 WQKRWCALSKTVFYYYGSDKDKQQKGEFAI----DGYTVRMNNTLRKDAKKDCCFEI-SA 75
Query: 253 TPQRWYQFSALSAPDRDQWIQAVQ 276
+R YQF+A S + ++W+Q ++
Sbjct: 76 PDKRIYQFTAASPKEAEEWVQQIK 99
>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 = 33.0 bits (76), Expect = 0.050
Identities = 16/52 (30%), Positives = 24/52 (46%), Gaps = 9/52 (17%)
Query: 181 REGWLWK--TGPKN---ADAYRKRWFTLDYRKLMYH----EEPLSAYPKGEI 223
+EG+L K G K ++KR+F L L Y +PL + P +I
Sbjct: 1 KEGYLIKRAQGRKGKLGRKNFKKRYFRLTNEALSYSKSKGSQPLCSIPLQDI 52
>gnl|CDD|214518 smart00105, ArfGap, Putative GTP-ase activating proteins for the
small GTPase, ARF. Putative zinc fingers with GTPase
activating proteins (GAPs) towards the small GTPase,
Arf. The GAP of ARD1 stimulates GTPase hydrolysis for
ARD1 but not ARFs.
Length = 119
Score = 33.1 bits (76), Expect = 0.050
Identities = 12/50 (24%), Positives = 22/50 (44%)
Query: 1 MKQIGNNVSKLKYEMRVPASYKVPTSSCPQVLLKEWIRSKYEREEFRHPE 50
+++ GN + +E + P Q + +I +KYE + F PE
Sbjct: 66 LQKGGNENANSIWESNLDDFSLKPPDDDDQQKYESFIAAKYEEKLFVPPE 115
>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 = 32.3 bits (74), Expect = 0.082
Identities = 29/101 (28%), Positives = 43/101 (42%), Gaps = 17/101 (16%)
Query: 181 REGWLWKTGPKNADAYRKRWFTLDYRKLMYHEEPLSAYPKGEIFL------GHCSDGYTV 234
+EG+L K G + ++ RWF L KL Y+++ + PKG I L C + Y
Sbjct: 5 KEGFLVKKGHV-VNNWKARWFVLLEDKLEYYKKKTDSSPKGMILLKGCTITSPCLE-YEK 62
Query: 235 RLGVPPGAKDQGFTFTLKTPQRWYQFSALSAPDRDQWIQAV 275
R V F T Q + A S +RD W + +
Sbjct: 63 RPLV--------FKLTTAKGQDHF-LQACSREERDAWAKDI 94
Score = 31.2 bits (71), Expect = 0.24
Identities = 17/44 (38%), Positives = 26/44 (59%), Gaps = 5/44 (11%)
Query: 60 DGFLMKRGKESGKYHPRRFVLNEINDTIKYYVKEKKE--PKATL 101
+GFL+K+G + R FVL E D ++YY K+K + PK +
Sbjct: 6 EGFLVKKGHVVNNWKARWFVLLE--DKLEYY-KKKTDSSPKGMI 46
>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 = 31.4 bits (72), Expect = 0.18
Identities = 8/33 (24%), Positives = 13/33 (39%)
Query: 275 VQTGFTFTLKTPQRWYQFSALSAPDRDQWIQAV 307
+ F + TP Y A S + W+ A+
Sbjct: 74 LGRPNVFAVYTPTNSYLLQARSEKEMHDWLYAI 106
Score = 30.6 bits (70), Expect = 0.36
Identities = 8/29 (27%), Positives = 12/29 (41%)
Query: 247 FTFTLKTPQRWYQFSALSAPDRDQWIQAV 275
F + TP Y A S + W+ A+
Sbjct: 78 NVFAVYTPTNSYLLQARSEKEMHDWLYAI 106
>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 = 31.2 bits (71), Expect = 0.18
Identities = 23/102 (22%), Positives = 38/102 (37%), Gaps = 21/102 (20%)
Query: 181 REGWLWK-----TGPKNADAYRKRWFTLDYRKLMYHEEPLSAYPKGEIFLGHCSDGYTVR 235
+GWL K G Y++RWF L L Y+ E+ H G T+
Sbjct: 1 FKGWLLKWTNYLKG------YQRRWFVLSNGLLSYYRNQ------AEM--AHTCRG-TIN 45
Query: 236 LGVPPGAKDQGFTFTLKT-PQRWYQFSALSAPDRDQWIQAVQ 276
L + F + + + A S +R +W+ A++
Sbjct: 46 LAGALIHTEDSCNFVISNGGTQTFHLKASSEVERQRWVTALE 87
>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 = 30.4 bits (69), Expect = 0.42
Identities = 29/106 (27%), Positives = 49/106 (46%), Gaps = 22/106 (20%)
Query: 183 GWLWKTGP--KNADAYRKRWFTLDYRKLMYHEEPLSAYPKGEIFLGHCSDGYTVRLGVPP 240
GWL K G KN +++RWF L +L Y+++ + P+G I L G TV+ +P
Sbjct: 7 GWLKKQGGIVKN---WQRRWFVLRGDQLYYYKDEDESKPQGCIPL----PGNTVKE-LPF 58
Query: 241 GAKDQG-FTFTLKTPQRW----------YQFSALSAPDRDQWIQAV 275
++ G F F + P Y A S + ++W++ +
Sbjct: 59 NPEEPGKFLFEI-IPGDGGTRRSANHDSYLLMANSQAEMEEWVKVI 103
>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 = 30.0 bits (68), Expect = 0.65
Identities = 21/104 (20%), Positives = 41/104 (39%), Gaps = 13/104 (12%)
Query: 177 RDFGREGWLWKTGPKNADAYRKRWFTLDYRKLMYHEEPLSAYPK----GEIFLGHCSDGY 232
R+F REG L K K ++R F L L+Y ++ + G++ L
Sbjct: 20 REFIREGCLLKLSKK---GLQQRMFFLFSDVLIYTSRGPTSTLQFKVHGQLPL------R 70
Query: 233 TVRLGVPPGAKDQGFTFTLKTPQRWYQFSALSAPDRDQWIQAVQ 276
+ + FT+ R +A S ++++W++ +
Sbjct: 71 GLMVEESEPEMGVPHCFTIYGGNRALTVAASSEEEKERWLEDLS 114
Score = 28.4 bits (64), Expect = 2.1
Identities = 13/69 (18%), Positives = 27/69 (39%), Gaps = 5/69 (7%)
Query: 249 FTLKTPQRWYQFSALSA-PDRDQWI----QAVQTGFTFTLKTPQRWYQFSALSAPDRDQW 303
+T + P QF P R + + FT+ R +A S ++++W
Sbjct: 50 YTSRGPTSTLQFKVHGQLPLRGLMVEESEPEMGVPHCFTIYGGNRALTVAASSEEEKERW 109
Query: 304 IQAVQTVLD 312
++ + +D
Sbjct: 110 LEDLSRAID 118
>gnl|CDD|241418 cd13264, PH_ITSN, Intersectin Pleckstrin homology (PH) domain.
ITSNs, an adaptor protein family, play a role in endo-
and exocytosis, actin cytoskeleton rearrangement and
signal transduction. There are two human ITSN genes:
ITSN1 and ITSN2. They share significant sequence
identity and a similar domain structure having both
short and long isoforms produced by alternative
splicing. The short isoform (ITSN-S) consists of two
Eps15 homology domains (EH1 and EH2), a coiled-coil
region (CCR) and five Src homology 3 domains (SH3A-E).
The EH domains bind to Asn-Pro-Phe motifs and are
implicated in endocytosis and vesicle transport. The SH3
domains bind to proline-rich sequences and are commonly
found in proteins implicated in cell signalling
pathways, cytoskeletal organization and membrane
traffic. The long isoform (ITSN-L) contains three
additional C-terminal domains, a Dbl homology domain
(DH), a Pleckstrin homology domain (PH) and a C2 domain.
The tandem DH-PH domains are present in all Dbl family
of GEFs. ITSN acts specifically on Cdc42 through its DH
domain with no portion of the PH domain making contact
with Cdc42. This is in contrast to Dbs which requires
the PH domain for full catalytic activity. The ITSN PH
domain binds phosphoinositides. C2 domains are usually
involved in Ca2+-dependent and Ca2+-independent
phospholipid binding. There are more than 30 proteins
that interact with ITSNs. ITSN-S is present in mammals,
frogs, flies and nematodes, while ITSN-L is present only
in vertebrates. 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 = 132
Score = 30.1 bits (68), Expect = 0.75
Identities = 23/110 (20%), Positives = 35/110 (31%), Gaps = 26/110 (23%)
Query: 167 NDSELVKLLTRDFGREGWLWKTGPKNADAYRKRWFTLDYRKLMYHEEPLSAYPKGEIFLG 226
ND L+ + G G + K+ Y+ MY K IFL
Sbjct: 37 NDFLLLTQPIKPLGGSGNDFVFDSKSNIQYK-----------MY---------KTPIFLN 76
Query: 227 HCSDGYTVRLGVPPGAKDQGFTFTLKTPQRWYQFSALSAPDRDQWIQAVQ 276
V + +P F + R Y A S +R W+Q ++
Sbjct: 77 ------EVLVKLPTDPSGDEPIFHISHIDRVYTLRAESINERTAWVQKIK 120
Score = 27.0 bits (60), Expect = 7.0
Identities = 8/30 (26%), Positives = 13/30 (43%)
Query: 279 FTFTLKTPQRWYQFSALSAPDRDQWIQAVQ 308
F + R Y A S +R W+Q ++
Sbjct: 91 PIFHISHIDRVYTLRAESINERTAWVQKIK 120
>gnl|CDD|241424 cd13270, PH1_TAPP1_2, Tandem PH-domain-containing proteins 1 and 2
Pleckstrin homology (PH) domain, N-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 binds
PtdIns(3,4)P2. 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 = 118
Score = 29.7 bits (67), Expect = 0.89
Identities = 20/87 (22%), Positives = 39/87 (44%), Gaps = 3/87 (3%)
Query: 192 NADAYRKRWFTLDYRK--LMYHEEPLSAYPKGEIFLGHCSDGYTVRLGVPPGAKDQG-FT 248
N+ + +R+F LD L+++ + P G +G + Y ++ P K + F
Sbjct: 21 NSGKFLRRYFILDTAAGLLLWYMDNPQNLPDGAAPVGSLNLTYISKVSDAPKQKPKAEFC 80
Query: 249 FTLKTPQRWYQFSALSAPDRDQWIQAV 275
F + R Y A D ++W++A+
Sbjct: 81 FVINALSRRYFLQANDQQDLEEWVEAL 107
>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 = 29.5 bits (66), Expect = 1.2
Identities = 12/28 (42%), Positives = 18/28 (64%), Gaps = 3/28 (10%)
Query: 187 KTGPKNADAYRKRWFTLDYRKLMYHEEP 214
+ G KN ++KRWF L R+L YH++
Sbjct: 31 RIGKKN---FKKRWFCLTSRELTYHKQK 55
>gnl|CDD|240344 PTZ00283, PTZ00283, serine/threonine protein kinase; Provisional.
Length = 496
Score = 30.6 bits (69), Expect = 1.3
Identities = 15/33 (45%), Positives = 20/33 (60%), Gaps = 1/33 (3%)
Query: 279 FTFTLKTPQRWYQFSALSAPDRDQWIQAVQTVL 311
F KT +R F A S P+RD W+Q +Q+VL
Sbjct: 458 FAVAFKTGRR-LLFQARSDPERDAWMQKIQSVL 489
>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 = 28.6 bits (64), Expect = 1.5
Identities = 11/29 (37%), Positives = 20/29 (68%)
Query: 248 TFTLKTPQRWYQFSALSAPDRDQWIQAVQ 276
TFT+ Q+ + F A A +R++WI+A++
Sbjct: 63 TFTITVDQKTFHFQARDAEERERWIRALE 91
Score = 28.6 bits (64), Expect = 1.5
Identities = 11/29 (37%), Positives = 20/29 (68%)
Query: 280 TFTLKTPQRWYQFSALSAPDRDQWIQAVQ 308
TFT+ Q+ + F A A +R++WI+A++
Sbjct: 63 TFTITVDQKTFHFQARDAEERERWIRALE 91
>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 = 28.8 bits (65), Expect = 1.7
Identities = 22/112 (19%), Positives = 39/112 (34%), Gaps = 23/112 (20%)
Query: 178 DFGREGWLWKTGPK---NADAYRKRWFTLDYRKLMYHEEPLSAYPKGEIFLGHCSDGYTV 234
D +EG+L K K + ++ R+ LD L +E I L +
Sbjct: 2 DSVKEGYLLKRRKKTLGSTGGWKLRYGVLDGNILELYESRGGQL-LESIKLRNAQ----- 55
Query: 235 RLGVPPGAKDQGFTF------------TLKTPQRWYQFSALSAPDRDQWIQA 274
+ P D + L + ++Y A + +RD+W+ A
Sbjct: 56 -IERQPNLPDDKYGTRHGFLINEHKKSGLSSTTKYY-LCAETDKERDEWVSA 105
>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 = 28.4 bits (64), Expect = 2.0
Identities = 20/99 (20%), Positives = 44/99 (44%), Gaps = 2/99 (2%)
Query: 56 TGHMDGFLMKRGKESGKYHPRRFVLNEINDTIKYYVKEKK-EPKATLRISELNV-VIAPS 113
G+L+K+ ++ K+ FVL + ++ EK+ +PK + +S +V + S
Sbjct: 2 GIVKKGYLLKKSGKNKKWKNLYFVLEGAEQHLYFFENEKRTKPKGLIDLSYSSVYPVHDS 61
Query: 114 KIEHPHSLQLTFMKDGSTRHIYVYHEESQSIMNWYHAIR 152
P+ Q+ + Y+ + ++ +W A+R
Sbjct: 62 LFGRPNCFQIVVRALNESTIYYLCADTAELAQDWMKALR 100
>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 = 28.0 bits (63), Expect = 2.5
Identities = 21/98 (21%), Positives = 42/98 (42%), Gaps = 8/98 (8%)
Query: 182 EGWLWKTGPKNADAYRKRWFTLDYRKL-MY-HEEPLSAYPKGEIFLGHCSDGYTVRLGVP 239
+G+L K + ++K W L R L Y + S +I D V + +
Sbjct: 9 QGYLQVLKKKGVNQWKKYWLVLRNRSLSFYKDQSEYSPV---KII--PIDDIIDV-VELD 62
Query: 240 PGAKDQGFTFTLKTPQRWYQFSALSAPDRDQWIQAVQT 277
P +K + + + TP++ +F A +W+ A+++
Sbjct: 63 PLSKSKKWCLQIITPEKRIRFCADDEESLIKWLGALKS 100
>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 = 28.0 bits (63), Expect = 2.7
Identities = 19/71 (26%), Positives = 36/71 (50%), Gaps = 16/71 (22%)
Query: 59 MDGFLMK-----RGKESGKYHPRRFVLNEINDTIKYYVKEKK---EPKATLRISELNVVI 110
++G L K +G + R FVL+ +++Y+V E+ +P+ +L ++ VI
Sbjct: 1 LEGQLSKYTNVVKG-----WQNRWFVLDPEAGSLEYFVSEESKNQKPRGSLPLA--GAVI 53
Query: 111 APSKIEHPHSL 121
+PS E H+
Sbjct: 54 SPSD-EDSHTF 63
>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 = 28.0 bits (62), Expect = 3.0
Identities = 29/135 (21%), Positives = 50/135 (37%), Gaps = 28/135 (20%)
Query: 181 REGWLWKTGPKNADAYRKRWFTLDYRKLMYHEEPLSAYPKGEIFLGHCSDGYTVRLGVPP 240
+ GWL K G + RWF L +L Y ++ P G IFL P
Sbjct: 5 KCGWLRKQG-GFVKTWHTRWFVLKGDQLYYFKDEDETKPLGTIFL--------------P 49
Query: 241 GAKDQGFTFTLKTPQRWYQFSALSAPDRDQWIQAVQTGFTFTLKTPQRWYQFSALSAPDR 300
G + + P + + F + DR++ +T Y A + D
Sbjct: 50 GNRVTEHPCNEEEPGK-FLFEVVPGGDRERMTANHET------------YLLMASTQNDM 96
Query: 301 DQWIQAVQTVLDTPL 315
+ W+++++ V+ P
Sbjct: 97 EDWVKSIRRVIWAPF 111
>gnl|CDD|172049 PRK13427, PRK13427, F0F1 ATP synthase subunit gamma; Provisional.
Length = 289
Score = 28.8 bits (64), Expect = 3.9
Identities = 21/70 (30%), Positives = 32/70 (45%), Gaps = 15/70 (21%)
Query: 127 KDGSTRHIYVYHEESQSIMN----------WYHAI--RNAKFHRLQ-VAFPSAND--SEL 171
+GS + VY ++I+ + AI NA + +A SA D SE+
Sbjct: 199 AEGSVQDDVVYEPSPEAILESLLPLVVKTAFLKAILEANASEQIARRIAMKSATDAASEM 258
Query: 172 VKLLTRDFGR 181
+KLLTR + R
Sbjct: 259 IKLLTRGYNR 268
>gnl|CDD|217501 pfam03339, Pox_L3_FP4, Poxvirus L3/FP4 protein.
Length = 319
Score = 28.6 bits (64), Expect = 4.2
Identities = 14/61 (22%), Positives = 22/61 (36%), Gaps = 2/61 (3%)
Query: 52 LTYITGHMDGFLMKRGKESGKYHPRRFVLNEINDTIKYYVKEKKEPKATLRISELNVVIA 111
L YI H L R ES Y F+ N + + K K + +++ +
Sbjct: 197 LNYIHIHDT--LATRNLESTNYFFEWFIRNHFELLSRQCLDIFKIKKKYITTPQIHRLTE 254
Query: 112 P 112
P
Sbjct: 255 P 255
>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 = 4.3
Identities = 19/81 (23%), Positives = 40/81 (49%), Gaps = 9/81 (11%)
Query: 72 KYHPRRFVLNEINDTIKYYVKEKKE--PKATLRISE-LNVVIAPSKIEHPHSLQLTFMKD 128
++ R FVL + + ++Y + E + P+ ++ +S+ V A + HPHSL +T +
Sbjct: 53 RWQRRWFVLYDDGE-LRYALDENPDTLPQGSIDMSKCTEVTDAEAITGHPHSLAITTPER 111
Query: 129 GSTRHIYVYHEESQSIMNWYH 149
I+ +S+ + W+
Sbjct: 112 -----IHFIKADSKEDIRWWL 127
>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 = 27.3 bits (60), Expect = 4.7
Identities = 8/36 (22%), Positives = 18/36 (50%)
Query: 277 TGFTFTLKTPQRWYQFSALSAPDRDQWIQAVQTVLD 312
TF + +R + A + ++ +WIQ +Q ++
Sbjct: 63 VAHTFIITGKKRSLELQARTEEEKKEWIQVIQATIE 98
Score = 26.5 bits (58), Expect = 8.1
Identities = 8/29 (27%), Positives = 16/29 (55%)
Query: 248 TFTLKTPQRWYQFSALSAPDRDQWIQAVQ 276
TF + +R + A + ++ +WIQ +Q
Sbjct: 66 TFIITGKKRSLELQARTEEEKKEWIQVIQ 94
>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 = 27.1 bits (60), Expect = 4.9
Identities = 28/107 (26%), Positives = 41/107 (38%), Gaps = 18/107 (16%)
Query: 181 REGWLWKTGPKNADAYRKRWFTLDYRKLMYHEEP--LSAY-------PKGEIFLGHCSDG 231
++G L K G + RK W RK + ++P L Y P G I L C
Sbjct: 9 KQGCLLKQGHR-----RKNW---KVRKFVLRDDPAYLHYYDPAKGEDPLGAIHLRGCVVT 60
Query: 232 YTVRLGVPPGAKDQGFTFTLKTPQR-WYQFSALSAPDRDQWIQAVQT 277
P +G F + T Y A + +R +WI+A+Q
Sbjct: 61 AVEDNSNPAKGSVEGNLFEIITADEVHYYLQAATPAERTEWIKAIQM 107
>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 = 27.0 bits (60), Expect = 6.4
Identities = 25/105 (23%), Positives = 44/105 (41%), Gaps = 18/105 (17%)
Query: 177 RDFGR---EGWLWKTGPKNADAY-----RKRWFTLDYRKLMYHEEPLSAYPKGEIFLGHC 228
+D GR +GWLWK K A + ++ WF L L ++ P +G I L
Sbjct: 8 KDLGRGDCDGWLWKK--KEAKGFFGQKWKRYWFVLKGSSLYWYNNPQDEKAEGFINLP-- 63
Query: 229 SDGYTVRLGVPPGAKDQGFTFTLKTPQ-RWYQFSALSAPDRDQWI 272
+ + K + F P+ + + F+A + D ++W+
Sbjct: 64 --DFKIERASECKKK---YAFKASHPKIKTFYFAAENLDDMNKWL 103
>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 = 26.9 bits (59), Expect = 6.5
Identities = 10/33 (30%), Positives = 16/33 (48%)
Query: 280 TFTLKTPQRWYQFSALSAPDRDQWIQAVQTVLD 312
+F + QR + A S + WI+A Q +D
Sbjct: 66 SFLVSGKQRTLELQARSQEEMIAWIKAFQAAID 98
>gnl|CDD|236087 PRK07748, PRK07748, sporulation inhibitor KapD; Provisional.
Length = 207
Score = 27.7 bits (62), Expect = 6.5
Identities = 14/44 (31%), Positives = 16/44 (36%), Gaps = 12/44 (27%)
Query: 71 GKYHPRRF------------VLNEINDTIKYYVKEKKEPKATLR 102
K P+ F V E+ DT YVK K P T R
Sbjct: 18 HKKKPKGFFPEIIEVGLVSVVGCEVEDTFSSYVKPKTFPSLTER 61
>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 = 27.2 bits (60), Expect = 7.1
Identities = 30/135 (22%), Positives = 48/135 (35%), Gaps = 43/135 (31%)
Query: 183 GWLWKTGPKNA---DAYRKRWFTL-------DYRKLMYHEEPLSAYPKGEIFLGHCSDGY 232
GWL K+ P+ A++KRWF L D L Y++ + P I L C
Sbjct: 8 GWLRKSPPEKKLRRYAWKKRWFVLRSGRLSGDPDVLEYYKNDHAKKPIRVIDLNLCEQ-- 65
Query: 233 TVRLGVPPGAKDQGFTFTLKTPQRWYQFSALSAPDRDQWIQAVQTGFTFTLKTPQRWYQF 292
D G TF K ++ + F +KT R +
Sbjct: 66 ----------VDAGLTFNKKE---------------------LENSYIFDIKTIDRIFYL 94
Query: 293 SALSAPDRDQWIQAV 307
A + D ++W++ +
Sbjct: 95 VAETEEDMNKWVRNI 109
>gnl|CDD|241519 cd13365, PH_PLC_plant-like, Plant-like Phospholipase C (PLC)
pleckstrin homology (PH) domain. PLC-gamma (PLCgamma)
was the second class of PLC discovered. PLC-gamma
consists of an N-terminal PH domain, a EF hand domain, a
catalytic domain split into X and Y halves internal to
which is a PH domain split by two SH2 domains and a
single SH3 domain, and a C-terminal C2 domain. PLCs (EC
3.1.4.3) play a role in the initiation of cellular
activation, proliferation, differentiation and
apoptosis. They are central to inositol lipid signalling
pathways, facilitating intracellular Ca2+ release and
protein kinase C (PKC) activation. 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 proteins which are are
classified into six isotypes (beta, gamma, delta,
epsilon, zeta, eta). This cd contains PLC members from
fungi and plants. 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 = 26.9 bits (60), Expect = 7.1
Identities = 18/61 (29%), Positives = 32/61 (52%), Gaps = 4/61 (6%)
Query: 50 EALTYITGHMDGFLMKRGKESGKYHPRRFVLNEINDTIKYYVKEKKEPKATLRISELNVV 109
EA+T + + L+K G+ GK H R F L+ T+ + +K K +R+S ++ +
Sbjct: 5 EAITQL--KIGSNLLKYGR-RGKPHFRYFRLSPDELTLYWSSPKKGSEKR-VRLSSVSRI 60
Query: 110 I 110
I
Sbjct: 61 I 61
>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 = 26.8 bits (59), Expect = 8.5
Identities = 31/137 (22%), Positives = 56/137 (40%), Gaps = 30/137 (21%)
Query: 181 REGWLWKTGP--KNADAYRKRWFTLDYRKLMYHEEPLSAYPKGEIFLGHCSDGYTVRLGV 238
+ GWL K KN +++RWF L +L Y+++ P+G I L G V +
Sbjct: 5 KAGWLKKQRSIMKN---WQQRWFVLRGDQLFYYKDEEETKPQGCISL----QGSQVN-EL 56
Query: 239 PPGAKDQGFTFTLKTPQRWYQFSALSAPDRDQWIQAVQTGFTFTLKTPQRWYQFSALSAP 298
PP ++ G + ++ A DR++ + + A S
Sbjct: 57 PPNPEEPG--------KHLFEILPGGAGDREK------------VPMNHEAFLLMANSQS 96
Query: 299 DRDQWIQAVQTVLDTPL 315
D + W++A++ V+ P
Sbjct: 97 DMEDWVKAIRRVIWAPF 113
>gnl|CDD|212525 cd10001, HDAC_classII_APAH, Histone deacetylase class IIa. This
subfamily includes bacterial acetylpolyamine
amidohydrolase (APAH) as well as other Class II histone
deacetylase (HDAC) and related proteins. Deacetylases of
class II are Zn-dependent enzymes that catalyze
hydrolysis of N(6)-acetyl-lysine residues of histones
(EC 3.5.1.98) and possibly other proteins to yield
deacetylated histones/other proteins. Mycoplana ramosa
APAH exhibits broad substrate specificity and catalyzes
the deacetylation of polyamines such as putrescine,
spermidine, and spermine by cleavage of a non-peptide
amide bond.
Length = 298
Score = 27.5 bits (62), Expect = 8.6
Identities = 15/50 (30%), Positives = 21/50 (42%), Gaps = 10/50 (20%)
Query: 211 HEEPLSAYPKGEIFLGHCSD-------GYTVRLGVPPGAKDQGFTFTLKT 253
H +P + YP FLG + GY + L +PPG D + L
Sbjct: 176 HGDPRTFYP---FFLGFADETGEGEGEGYNLNLPLPPGTGDDDYLAALDE 222
>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 = 26.2 bits (58), Expect = 9.0
Identities = 28/105 (26%), Positives = 42/105 (40%), Gaps = 27/105 (25%)
Query: 182 EGWLWKTGPKNADAYRKRWFTLDYRKLMYHEEPLSAYPKGEIF---------LGHCSDGY 232
EG L K ++KR+F L R L Y ++ K IF + CS
Sbjct: 3 EGPLLKQTSS-FQRWKKRYFKLRGRTLYYAKDS-----KSLIFDEVDLSDASVAECS--- 53
Query: 233 TVRLGVPPGAKDQGFTFTLKTPQRWYQFSALSAPDRDQWIQAVQT 277
K+ +FT+ TP R A S + ++WI A++T
Sbjct: 54 ---------TKNVNHSFTVITPFRKLILCAESRKEMEEWISALKT 89
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
0.320 0.135 0.425
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: 16,557,994
Number of extensions: 1561983
Number of successful extensions: 1613
Number of sequences better than 10.0: 1
Number of HSP's gapped: 1566
Number of HSP's successfully gapped: 126
Length of query: 321
Length of database: 10,937,602
Length adjustment: 97
Effective length of query: 224
Effective length of database: 6,635,264
Effective search space: 1486299136
Effective search space used: 1486299136
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 16 ( 7.4 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 41 (21.8 bits)
S2: 59 (26.7 bits)