RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy17150
(146 letters)
>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 = 117 bits (295), Expect = 4e-35
Identities = 39/103 (37%), Positives = 55/103 (53%), Gaps = 2/103 (1%)
Query: 39 SCRGYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHL-- 96
+C GYL K W +RWFV D T L YY + + K +G + +E VY D
Sbjct: 4 TCEGYLYKRGALLKGWKQRWFVLDLTKHQLRYYESKEDTKCKGVIDLQEVESVYPDTPSI 63
Query: 97 NSVKSPSPHLTFVVKSSDRTFHLMAPSAEAMRIWIDVIFSGAE 139
+ KSP P F +K++ R ++ +APSAEA + WIDVI +
Sbjct: 64 GAPKSPDPGAFFELKTNKRVYYFLAPSAEAAQQWIDVIQTLLS 106
>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 = 62.7 bits (153), Expect = 6e-14
Identities = 27/103 (26%), Positives = 44/103 (42%), Gaps = 12/103 (11%)
Query: 42 GYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSE--KKQRGATYFRCIEEVYVDHLNSV 99
GYL K+ G+ W +RWFV L YY ++ +K +G ++ +D +
Sbjct: 3 GYLTKLGGKVKTWKRRWFVLKNG--ELFYYKSPNDVIRKPQG--------QIALDGSCEI 52
Query: 100 KSPSPHLTFVVKSSDRTFHLMAPSAEAMRIWIDVIFSGAEGYQ 142
TF + + RT++L A S + WI VI +
Sbjct: 53 ARAEGAQTFEIVTEKRTYYLTADSENDLDEWIRVIQNVLRRQA 95
>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 = 54.9 bits (132), Expect = 1e-10
Identities = 27/97 (27%), Positives = 39/97 (40%), Gaps = 4/97 (4%)
Query: 40 CRGYLNKM-AGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLNS 98
G+L K G W KR+FV + +L YY + +KK + V
Sbjct: 3 KEGWLYKKSGGGKKSWKKRYFVL--FNSTLLYYKSKKDKKSYKPKGSIDLSGCTVREAPD 60
Query: 99 VKSPSPHLTFVVKSSDR-TFHLMAPSAEAMRIWIDVI 134
S F +K+SDR T L A S E W++ +
Sbjct: 61 PDSSKKPHCFEIKTSDRKTLLLQAESEEEREKWVEAL 97
>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 = 4e-09
Identities = 26/93 (27%), Positives = 37/93 (39%), Gaps = 9/93 (9%)
Query: 42 GYLNKMAGR--FHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLNSV 99
GYLNK+ + W RWFVFD L YY + + T I+ S
Sbjct: 4 GYLNKLETKGLLKTWKSRWFVFDERKCQLYYY-----RSPQDITPLGSID--LSGAAFSY 56
Query: 100 KSPSPHLTFVVKSSDRTFHLMAPSAEAMRIWID 132
+ TF + + R + L A +AM W+
Sbjct: 57 DPEAEKGTFEIHTPGRVYILKASDRQAMLYWLQ 89
>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 = 49.7 bits (119), Expect = 9e-09
Identities = 30/103 (29%), Positives = 41/103 (39%), Gaps = 11/103 (10%)
Query: 40 CRGYLNK----MAGRFHHWNKRWFVFDRTSRS------LAYYSDRSEKKQRGATYFRCIE 89
G+L K + W KRWFV R+ R L YY D KK GA E
Sbjct: 1 YEGWLRKSPPEKKIKRAAWKKRWFVL-RSGRLSGDPDVLEYYKDDHCKKPIGAIDLDECE 59
Query: 90 EVYVDHLNSVKSPSPHLTFVVKSSDRTFHLMAPSAEAMRIWID 132
+V K F + + RT++L+A + E M W+
Sbjct: 60 QVDAGLTFEYKEFKNQFIFDIVTPKRTYYLVAETEEEMNKWVR 102
>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 = 49.7 bits (119), Expect = 1e-08
Identities = 31/93 (33%), Positives = 40/93 (43%), Gaps = 7/93 (7%)
Query: 42 GYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLNSVKS 101
GYL K R W KRWFV T LAYY + E + R I+ + V+
Sbjct: 10 GYLEKKGERRKTWKKRWFVLRPT--KLAYYKNDKEYR-----LLRLIDLTDIHTCTEVQL 62
Query: 102 PSPHLTFVVKSSDRTFHLMAPSAEAMRIWIDVI 134
TF + + RTF++ A S M WI I
Sbjct: 63 KKHDNTFGIVTPARTFYVQADSKAEMESWISAI 95
>gnl|CDD|215766 pfam00169, PH, PH domain. PH stands for pleckstrin homology.
Length = 101
Score = 49.4 bits (118), Expect = 1e-08
Identities = 27/99 (27%), Positives = 38/99 (38%), Gaps = 5/99 (5%)
Query: 40 CRGYLNKM-AGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLNS 98
G+L K +G W KR+FV L YY D + R +S
Sbjct: 3 KEGWLLKKGSGGRKSWKKRYFVL--FDGVLLYYKDSKKSSSRPKGSIPLSGCQVTKVPDS 60
Query: 99 VKSPSPHLTFVVKSSDR-TFHLMAPSAEAMRIWIDVIFS 136
+ F +++ DR TF L A S E + W+ I S
Sbjct: 61 EDGKRKN-CFEIRTGDRETFLLQAESEEERKEWVKAIRS 98
>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 = 49.6 bits (119), Expect = 1e-08
Identities = 25/95 (26%), Positives = 39/95 (41%), Gaps = 7/95 (7%)
Query: 40 CRGYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLNSV 99
G+L K + + W KRWFV L+YY D E K R R I + + +
Sbjct: 8 KSGWLLKRSRKTKTWKKRWFVLRPC--QLSYYKDEKEYKLR-----RVINLSELTAVAPL 60
Query: 100 KSPSPHLTFVVKSSDRTFHLMAPSAEAMRIWIDVI 134
K F + + + +H A S + W++ I
Sbjct: 61 KDKKRKNVFAIYTPSKNYHFQASSEKDANEWVEAI 95
>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 = 48.8 bits (117), Expect = 2e-08
Identities = 25/93 (26%), Positives = 38/93 (40%), Gaps = 7/93 (7%)
Query: 42 GYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLNSVKS 101
GYL K G +W RWFV + L Y+ R++ K V D+ S
Sbjct: 7 GYLTKQGGIVKNWKTRWFVLRKNE--LKYFKTRTDTKPIRTLDLTECSSVQADY-----S 59
Query: 102 PSPHLTFVVKSSDRTFHLMAPSAEAMRIWIDVI 134
F + DRTF++ A + E W+ ++
Sbjct: 60 QGKPNCFRLVFPDRTFYMYAKTEEEADEWVKLL 92
>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 = 48.7 bits (116), Expect = 4e-08
Identities = 28/87 (32%), Positives = 40/87 (45%), Gaps = 6/87 (6%)
Query: 54 WNKRWFVFDRTSRS-----LAYYSDRSEKKQ-RGATYFRCIEEVYVDHLNSVKSPSPHLT 107
W KRWFV R S L YY ++ KK R C + K +
Sbjct: 26 WRKRWFVLRRGRMSGNPDVLEYYRNKHSKKPIRVIDLNECEVTKHAGVNFIKKEFQNNFV 85
Query: 108 FVVKSSDRTFHLMAPSAEAMRIWIDVI 134
F+VK++ RTF+L+A + E M+ W+ I
Sbjct: 86 FIVKTTTRTFYLVAKTEEEMQDWVQNI 112
>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 = 47.1 bits (112), Expect = 1e-07
Identities = 24/89 (26%), Positives = 43/89 (48%), Gaps = 11/89 (12%)
Query: 54 WNKRWFVFDRTSRS-----LAYYSDRSEKKQRGATYFRCIEEVYVD---HLNSVKSPSPH 105
W +R+FV R S L YY+DR+ +K +G+ E+V D +
Sbjct: 23 WRRRYFVL-RQSEIPGQYFLEYYTDRTCRKLKGSIDLDQCEQV--DAGLTFETKNKLKDQ 79
Query: 106 LTFVVKSSDRTFHLMAPSAEAMRIWIDVI 134
F +++ RT++L+A + + M W++ I
Sbjct: 80 HIFDIRTPKRTYYLVADTEDEMNKWVNCI 108
>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 = 45.7 bits (109), Expect = 3e-07
Identities = 25/108 (23%), Positives = 39/108 (36%), Gaps = 17/108 (15%)
Query: 34 TLDATSCRGYLNKMAG-RFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGA------TYFR 86
G+L+K G +W KRWFV L YY D E+K G+ T
Sbjct: 3 PNAPVVFSGWLHKQGGSGLKNWKKRWFVL--KDNCLYYYKDPEEEKALGSILLPSYTISP 60
Query: 87 CIEEVYVDHLNSVKSPSPHLTFVVKSSDRTFHLMAPSAEAMRIWIDVI 134
++ + K + RT++ A + E M W+ +
Sbjct: 61 ASPSDEINRKFAFK--------AEHAGMRTYYFAADTQEEMEQWMKAL 100
>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 = 43.5 bits (103), Expect = 3e-06
Identities = 29/109 (26%), Positives = 39/109 (35%), Gaps = 26/109 (23%)
Query: 41 RGYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLNSVK 100
G+L K G +W +RWFV L YY D E K +G N+VK
Sbjct: 6 SGWLKKQGGIVKNWQRRWFVL--RGDQLYYYKDEDESKPQGCIPL---------PGNTVK 54
Query: 101 -------SPSPHLTFVVKSSDR--------TFHLMAPSAEAMRIWIDVI 134
P L ++ ++ LMA S M W+ VI
Sbjct: 55 ELPFNPEEPGKFLFEIIPGDGGTRRSANHDSYLLMANSQAEMEEWVKVI 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 = 42.7 bits (100), Expect = 3e-06
Identities = 24/92 (26%), Positives = 40/92 (43%), Gaps = 4/92 (4%)
Query: 42 GYLNKMAGRFHH-WNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLNSVK 100
G+L K G+ W KRWFV L YY + + ++ + + V+ ++S
Sbjct: 3 GWLKKRGGKGLKSWKKRWFVL--FDDVLLYYKSKKDSSKKPKGLIPLSDGLEVELVSSSG 60
Query: 101 SPSPHLTFVVKSSDRTFHLMAPSAEAMRIWID 132
P+ V RT++L A S E W++
Sbjct: 61 KPNC-FELVTPDRGRTYYLQAESEEEREEWLE 91
>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 = 42.7 bits (101), Expect = 4e-06
Identities = 29/98 (29%), Positives = 43/98 (43%), Gaps = 14/98 (14%)
Query: 41 RGYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLNSVK 100
+GYL K W +RWFV SL+YY K+++G E+ +D V+
Sbjct: 11 KGYLWKKGHLLPTWRERWFVLKP--NSLSYYKSEDLKEKKG--------EIALDSNCCVE 60
Query: 101 SPSP----HLTFVVKSSDRTFHLMAPSAEAMRIWIDVI 134
S F VK+ D+T+ L A + + WI I
Sbjct: 61 SLPDREGKKCRFCVKTPDKTYELSASDHKTRQEWIQAI 98
>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 = 43.0 bits (101), Expect = 5e-06
Identities = 32/105 (30%), Positives = 44/105 (41%), Gaps = 11/105 (10%)
Query: 40 CRGYLNKMAG----RFHHWNKRWFVFDRTSR------SLAYYSDRSEKKQRGATYFRCIE 89
C G+L K R + W KRWFV R+ R L YY + KK E
Sbjct: 6 CSGWLRKSPPEKKLRRYAWKKRWFVL-RSGRLSGDPDVLEYYKNDHAKKPIRVIDLNLCE 64
Query: 90 EVYVDHLNSVKSPSPHLTFVVKSSDRTFHLMAPSAEAMRIWIDVI 134
+V + K F +K+ DR F+L+A + E M W+ I
Sbjct: 65 QVDAGLTFNKKELENSYIFDIKTIDRIFYLVAETEEDMNKWVRNI 109
>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 = 42.2 bits (100), Expect = 5e-06
Identities = 30/108 (27%), Positives = 45/108 (41%), Gaps = 17/108 (15%)
Query: 42 GYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQ--RGATYFRCIEEVYVDHL-NS 98
G L+K W RWFV D + SL Y+ K Q RG+ L +
Sbjct: 3 GQLSKYTNVVKGWQNRWFVLDPEAGSLEYFVSEESKNQKPRGSL-----------PLAGA 51
Query: 99 VKSPS---PHLTFVVKSSDRTFHLMAPSAEAMRIWIDVIFSGAEGYQE 143
V SPS H V ++ + L A A+ + W++ + + AE + E
Sbjct: 52 VISPSDEDSHTFTVNAANGEMYKLRAADAKERQEWVNRLRAVAEHHTE 99
>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 = 41.5 bits (97), Expect = 2e-05
Identities = 33/111 (29%), Positives = 43/111 (38%), Gaps = 19/111 (17%)
Query: 35 LDATSCRGYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYF---RCIEEV 91
L+ C G+L K G W+ RWFV L Y+ D E K G + R E
Sbjct: 1 LEVIKC-GWLRKQGGFVKTWHTRWFVL--KGDQLYYFKDEDETKPLGTIFLPGNRVTE-- 55
Query: 92 YVDHLNSVKSPSPHLTFVVKSSDR--------TFHLMAPSAEAMRIWIDVI 134
H + + P L VV DR T+ LMA + M W+ I
Sbjct: 56 ---HPCNEEEPGKFLFEVVPGGDRERMTANHETYLLMASTQNDMEDWVKSI 103
>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 = 40.9 bits (96), Expect = 2e-05
Identities = 29/96 (30%), Positives = 41/96 (42%), Gaps = 15/96 (15%)
Query: 42 GYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFR-CIE----EVYVDHL 96
G L+K W RWFV D + L+YY+ + EK RG+ R C+ + +D
Sbjct: 3 GPLSKWTNVMKGWQYRWFVLDDNAGLLSYYTSK-EKMMRGSR--RGCVRLKGAVIGIDDE 59
Query: 97 NSVKSPSPHLTFVVKSSDRTFHLMAPSAEAMRIWID 132
+ TF + +TFH A AE WI
Sbjct: 60 DDS-------TFTITVDQKTFHFQARDAEERERWIR 88
>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 = 39.9 bits (94), Expect = 4e-05
Identities = 28/99 (28%), Positives = 38/99 (38%), Gaps = 18/99 (18%)
Query: 42 GYLNKMA-GRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLN--S 98
GYL K + F W +RWF + L Y R +K V V+ L +
Sbjct: 3 GYLFKRSSNAFKTWKRRWFSIQ--NGQL-VYQKRFKKDT---------PTVVVEDLRLCT 50
Query: 99 VK-SPSPHLTFV--VKSSDRTFHLMAPSAEAMRIWIDVI 134
VK F V S +++ L A S E + WI I
Sbjct: 51 VKPCEDIDRRFCFEVVSPTKSYMLQAESEEDRQAWIQAI 89
>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 = 39.6 bits (93), Expect = 6e-05
Identities = 26/98 (26%), Positives = 39/98 (39%), Gaps = 13/98 (13%)
Query: 42 GYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLNSVKS 101
G+L K G W +RWFV + L Y+ + E + + +VKS
Sbjct: 11 GWLTKQGGSIKTWRRRWFVLKQG--KLFYF--KDEDPDSEPR-----GVIDLSDCLTVKS 61
Query: 102 PSPHL----TFVVKSSDRTFHLMAPSAEAMRIWIDVIF 135
F V + +RTF+L+A S + WI I
Sbjct: 62 AEEATNKEFAFEVSTPERTFYLIADSEKEKEEWISAIG 99
>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 = 38.8 bits (91), Expect = 8e-05
Identities = 26/94 (27%), Positives = 45/94 (47%), Gaps = 12/94 (12%)
Query: 42 GYLNKMAGRFHH-WNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLNSVK 100
G+L+K++ + ++ + KRW VFD SL Y++ SEK+ I + + SV
Sbjct: 4 GWLDKLSPQGNYVFQKRWVVFD--GDSLRYFN--SEKEMYSK---GIIPLSSIKTVRSVG 56
Query: 101 SPSPHLTFVVKSSDRTFHLMAPSAEAMRIWIDVI 134
F V + +RTF A S + +W+ +
Sbjct: 57 D----NKFEVVTGNRTFVFRAESEDERNLWVSTL 86
>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 = 39.1 bits (92), Expect = 1e-04
Identities = 26/83 (31%), Positives = 39/83 (46%), Gaps = 12/83 (14%)
Query: 54 WNKRWFVFDRTSRSLAYYSDRSEK--KQRGA---TYFRCIEEVYVDHLNSVKSPSPHLTF 108
+ +RWFV T SL+YY K K++G+ + +C+EEV + + F
Sbjct: 20 YKERWFVL--TKSSLSYYEGDGGKRGKEKGSIDLSKIKCVEEV----KDDASFERKYP-F 72
Query: 109 VVKSSDRTFHLMAPSAEAMRIWI 131
V D T ++ APS E WI
Sbjct: 73 QVVYDDYTLYVFAPSEEDRDEWI 95
>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 = 38.2 bits (89), Expect = 2e-04
Identities = 22/99 (22%), Positives = 44/99 (44%), Gaps = 9/99 (9%)
Query: 42 GYL----NKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLN 97
G+L N+ +G+F R+F+ D + L +Y D + GA + Y+ ++
Sbjct: 12 GFLDIEENENSGKFLR---RYFILDTAAGLLLWYMDNPQNLPDGAAPVGSLNLTYISKVS 68
Query: 98 -SVKS-PSPHLTFVVKSSDRTFHLMAPSAEAMRIWIDVI 134
+ K P FV+ + R + L A + + W++ +
Sbjct: 69 DAPKQKPKAEFCFVINALSRRYFLQANDQQDLEEWVEAL 107
>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 = 37.9 bits (89), Expect = 4e-04
Identities = 22/102 (21%), Positives = 37/102 (36%), Gaps = 24/102 (23%)
Query: 42 GYLNKMAGRFHHWNKRWFVF--DRTSRSLAYYSDRSEKKQRGATYF-------RCIEEVY 92
GYL+K R +N+ WFV D L++Y ++ YF R Y
Sbjct: 33 GYLSKRGKRTPRYNRYWFVLKGD----VLSWYRSSTD------LYFPHGTIDLR-----Y 77
Query: 93 VDHLNSVKSPSPHLTFVVKSSDRTFHLMAPSAEAMRIWIDVI 134
F + ++ RT+ A S + + W+ +
Sbjct: 78 GISAEITDKDKETTHFKITTNSRTYTFKADSEPSAKEWVKAL 119
>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 = 37.2 bits (87), Expect = 4e-04
Identities = 28/88 (31%), Positives = 37/88 (42%), Gaps = 14/88 (15%)
Query: 54 WNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLNSVKSPSPHLT------ 107
+ KRWF D R L Y+ D + +G + EE Y SV+ P
Sbjct: 19 FRKRWFTLD--DRRLMYFKDPLDAFPKGEIFIGSKEEGY-----SVREGLPAGIKGHWGF 71
Query: 108 -FVVKSSDRTFHLMAPSAEAMRIWIDVI 134
F + + DRTF L A + E R WI I
Sbjct: 72 GFTLVTPDRTFVLSAETEEERREWITAI 99
>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 = 37.4 bits (87), Expect = 4e-04
Identities = 27/82 (32%), Positives = 37/82 (45%), Gaps = 10/82 (12%)
Query: 54 WNKRWFVFDRTSRSLAYY-SDRSEKKQRGATYFRCIEEVYVDHLNSVKSPSPHLTFVVKS 112
W RWFV T L YY +D+ K G R +E+ VD N+ K F + +
Sbjct: 28 WKSRWFVLRDTV--LKYYENDQEGAKALGTIDIRSAKEI-VD--NTPKENG----FDITT 78
Query: 113 SDRTFHLMAPSAEAMRIWIDVI 134
RT+H +A S E W V+
Sbjct: 79 PSRTYHFVAESPEDASQWFSVL 100
>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 = 35.7 bits (83), Expect = 0.002
Identities = 15/40 (37%), Positives = 23/40 (57%), Gaps = 2/40 (5%)
Query: 42 GYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRG 81
G+L K+ GR W +RWF+ T L Y+ ++K+ RG
Sbjct: 7 GWLLKLGGRVKSWKRRWFIL--TDNCLYYFEYTTDKEPRG 44
>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 = 35.7 bits (83), Expect = 0.002
Identities = 24/107 (22%), Positives = 39/107 (36%), Gaps = 14/107 (13%)
Query: 33 LTLDATSCRGYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYF-RCIEEV 91
GYL K R + KRWFV L Y+ + +++ G C E+
Sbjct: 3 SCNSPVDKEGYLWKKGERNTSYQKRWFVL--KGNLLFYFEKKGDREPLGVIVLEGCTVEL 60
Query: 92 YVDHLNSVKSPSPHLTFVVK---SSDRTFHLMAPSAEAMRIWIDVIF 135
+ P+ F ++ R++ L A S E M W+ +
Sbjct: 61 -------SEDEEPY-AFAIRFDGPGSRSYVLAAESQEDMESWMKALS 99
>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 = 35.7 bits (82), Expect = 0.002
Identities = 29/104 (27%), Positives = 41/104 (39%), Gaps = 16/104 (15%)
Query: 42 GYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLN-SVK 100
G+L K +W +RWFV L YY D E K +G ++ V+ L + +
Sbjct: 7 GWLKKQRSIMKNWQQRWFVL--RGDQLFYYKDEEETKPQG---CISLQGSQVNELPPNPE 61
Query: 101 SPSPHLTFV----------VKSSDRTFHLMAPSAEAMRIWIDVI 134
P HL + V + F LMA S M W+ I
Sbjct: 62 EPGKHLFEILPGGAGDREKVPMNHEAFLLMANSQSDMEDWVKAI 105
>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 = 35.0 bits (81), Expect = 0.003
Identities = 23/87 (26%), Positives = 34/87 (39%), Gaps = 18/87 (20%)
Query: 56 KRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLNSVKSPSPHL-------TF 108
KRWFV T SL YY + + + ++ L SV P + TF
Sbjct: 33 KRWFVL--TPNSLDYYKSSERNALKLGS-------LVLNSLCSVVPPDEKVYKETGYWTF 83
Query: 109 VVKSSDRTFHLMAPS-AEAMRIWIDVI 134
V +++L EA R W++ I
Sbjct: 84 TVHGRKHSYYLYTKLQEEANR-WVNAI 109
>gnl|CDD|241446 cd13292, PH_Osh1p_Osh2p_yeast, Yeast oxysterol binding protein
homologs 1 and 2 Pleckstrin homology (PH) domain. Yeast
Osh1p is proposed to function in postsynthetic sterol
regulation, piecemeal microautophagy of the nucleus, and
cell polarity establishment. Yeast Osh2p is proposed to
function in sterol metabolism and cell polarity
establishment. Both Osh1p and Osh2p contain 3 N-terminal
ankyrin repeats, a PH domain, a FFAT motif (two
phenylalanines in an acidic tract), and a C-terminal
OSBP-related domain. OSBP andOsh1p PH domains
specifically localize to the Golgi apparatus in a
PtdIns4P-dependent manner. Oxysterol binding proteins
are a multigene family that is conserved in yeast,
flies, worms, mammals and plants. In general OSBPs and
ORPs have been found to be involved in the transport and
metabolism of cholesterol and related lipids in
eukaryotes. They all contain a C-terminal oxysterol
binding domain, and most contain an N-terminal PH
domain. OSBP PH domains bind to membrane
phosphoinositides and thus likely play an important role
in intracellular targeting. They are members of the
oxysterol binding protein (OSBP) family which includes
OSBP, OSBP-related proteins (ORP), Goodpasture antigen
binding protein (GPBP), and Four phosphate adaptor
protein 1 (FAPP1). They have a wide range of purported
functions including sterol transport, cell cycle
control, pollen development and vessicle transport from
Golgi recognize both PI lipids and ARF proteins. PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 103
Score = 34.2 bits (79), Expect = 0.005
Identities = 29/113 (25%), Positives = 42/113 (37%), Gaps = 17/113 (15%)
Query: 37 ATSCRGYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDR-SEKKQ-RGATYFRCIEEVYVD 94
+ +GYL K + RWFV + L+YY + E RG+ + V
Sbjct: 1 PPTMKGYLKKWTNYAKGYKTRWFVLE--DGVLSYYRHQDDEGSACRGSINMKNARLVS-- 56
Query: 95 HLNSVKSPSPHLTFVVKSSDRT---FHLMAPS-AEAMRIWIDVIFSGAEGYQE 143
PS L F V S ++L A EA R WI + E ++
Sbjct: 57 ------DPSEKLRFEVSSKTSGSPKWYLKANHPVEAAR-WIQALQKAIEWAKD 102
>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 = 34.3 bits (79), Expect = 0.005
Identities = 12/40 (30%), Positives = 19/40 (47%), Gaps = 2/40 (5%)
Query: 42 GYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRG 81
G+L K ++W RWFV L YY +++ +G
Sbjct: 7 GFLVKKGHVVNNWKARWFVL--LEDKLEYYKKKTDSSPKG 44
>gnl|CDD|241437 cd13283, PH_GPBP, Goodpasture antigen binding protein Pleckstrin
homology (PH) domain. The GPBP (also called Collagen
type IV alpha-3-binding protein/hCERT; START
domain-containing protein 11/StARD11; StAR-related lipid
transfer protein 11) is a kinase that phosphorylates an
N-terminal region of the alpha 3 chain of type IV
collagen, which is commonly known as the goodpasture
antigen. Its splice variant the ceramide transporter
(CERT) mediates the cytosolic transport of ceramide.
There have been additional splice variants identified,
but all of them function as ceramide transport proteins.
GPBP and CERT both contain an N-terminal PH domain,
followed by a serine rich domain, and a C-terminal START
domain. However, GPBP has an additional serine rich
domain just upstream of its START domain. They are
members of the oxysterol binding protein (OSBP) family
which includes OSBP, OSBP-related proteins (ORP),
Goodpasture antigen binding protein (GPBP), and Four
phosphate adaptor protein 1 (FAPP1). They have a wide
range of purported functions including sterol transport,
cell cycle control, pollen development and vessicle
transport from Golgi recognize both PI lipids and ARF
proteins. PH domains have diverse functions, but in
general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 100
Score = 33.0 bits (76), Expect = 0.014
Identities = 30/101 (29%), Positives = 42/101 (41%), Gaps = 22/101 (21%)
Query: 41 RGYLNKMAGRFHHWNKRWFVF-DRTSRSLAYYSDRSEKKQ--RGATYFRCIEEVYVDHLN 97
RG L+K H W R+FV D T L+YY E + RG+ R
Sbjct: 2 RGVLSKWTNYIHGWQDRYFVLKDGT---LSYYKSEDETQYGCRGSISLRKA--------- 49
Query: 98 SVKSPSPH----LTFVVKSSDRTFHLMAPSAEAMRIWIDVI 134
+K PH F V +D ++L A S E + W+D +
Sbjct: 50 VIK---PHEFDECRFDVSVNDSVWYLRAESPEERQRWVDAL 87
>gnl|CDD|241425 cd13271, PH2_TAPP1_2, Tandem PH-domain-containing proteins 1 and 2
Pleckstrin homology (PH) domain, C-terminal repeat. The
binding of TAPP1 (also called PLEKHA1/pleckstrin
homology domain containing, family A (phosphoinositide
binding specific) member 1) and TAPP2 (also called
PLEKHA2) adaptors to PtdIns(3,4)P(2), but not PI(3,4,
5)P3, function as negative regulators of insulin and
PI3K signalling pathways (i.e. TAPP/utrophin/syntrophin
complex). TAPP1 and TAPP2 contain two sequential PH
domains in which the C-terminal PH domain specifically
binds PtdIns(3,4)P2 with high affinity. The N-terminal
PH domain does not interact with any phosphoinositide
tested. They also contain a C-terminal PDZ-binding motif
that interacts with several PDZ-binding proteins,
including PTPN13 (known previously as PTPL1 or FAP-1) as
well as the scaffolding proteins MUPP1 (multiple
PDZ-domain-containing protein 1), syntrophin and
utrophin. PH domains have diverse functions, but in
general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 114
Score = 33.1 bits (76), Expect = 0.015
Identities = 23/100 (23%), Positives = 43/100 (43%), Gaps = 18/100 (18%)
Query: 42 GYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLNSVKS 101
GY K +W +R+F+ D +++YY ++K+ + + + + V
Sbjct: 12 GYCVKQGAVRKNWKRRYFILD--DNTISYYKSETDKEP--------LRTIPLKEVLKVHE 61
Query: 102 -------PSPHLTFVVKSSDRTFHLMAPSAEAMRIWIDVI 134
+L F + ++ RTF++ A S E M WI I
Sbjct: 62 CLSGDLLMRDNL-FEIITTSRTFYIQADSPEDMHSWIKAI 100
>gnl|CDD|241470 cd13316, PH_Boi, Boi family Pleckstrin homology domain. Yeast
Boi proteins Boi1 and Boi2 are functionally redundant
and important for cell growth with Boi mutants
displaying defects in bud formation and in the
maintenance of cell polarity.They appear to be linked
to Rho-type GTPase, Cdc42 and Rho3. Boi1 and Boi2
display two-hybrid interactions with the GTP-bound
("active") form of Cdc42, while Rho3 can suppress of
the lethality caused by deletion of Boi1 and Boi2.
These findings suggest that Boi1 and Boi2 are targets
of Cdc42 that promote cell growth in a manner that is
regulated by Rho3. Boi proteins contain a N-terminal
SH3 domain, followed by a SAM (sterile alpha motif)
domain, a proline-rich region, which mediates binding
to the second SH3 domain of Bem1, and C-terminal PH
domain. The PH domain is essential for its function in
cell growth and is important for localization to the
bud, while the SH3 domain is needed for localization to
the neck. PH domains have diverse functions, but in
general are involved in targeting proteins to the
appropriate cellular location or in the interaction
with a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved
across all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 95
Score = 32.3 bits (74), Expect = 0.020
Identities = 12/42 (28%), Positives = 20/42 (47%), Gaps = 2/42 (4%)
Query: 40 CRGYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRG 81
G++ K R+ W R+FV T L Y ++ K++G
Sbjct: 1 HSGWMKKRGERYGTWKTRYFVLKGT--RLYYLKSENDSKEKG 40
>gnl|CDD|241447 cd13293, PH_CpORP2-like, Cryptosporidium-like Oxysterol binding
protein related protein 2 Pleckstrin homology (PH)
domain. There are 2 types of ORPs found in
Cryptosporidium: CpORP1 and CpORP2. Cryptosporium
differs from other apicomplexans like Plasmodium,
Toxoplasma, and Eimeria which possess only a single
long-type ORP consisting of an N-terminal PH domain
followed by a C-terminal ligand binding (LB) domain.
CpORP2 is like this, but CpORP1 differs and has a
truncated N-terminus resulting in only having a LB
domain present. The exact functions of these proteins
are largely unknown though CpORP1 is thought to be
involved in lipid transport across the parasitophorous
vacuole membrane. Oxysterol binding proteins are a
multigene family that is conserved in yeast, flies,
worms, mammals and plants. In general OSBPs and ORPs
have been found to be involved in the transport and
metabolism of cholesterol and related lipids in
eukaryotes. They all contain a C-terminal oxysterol
binding domain, and most contain an N-terminal PH
domain. OSBP PH domains bind to membrane
phosphoinositides and thus likely play an important role
in intracellular targeting. They are members of the
oxysterol binding protein (OSBP) family which includes
OSBP, OSBP-related proteins (ORP), Goodpasture antigen
binding protein (GPBP), and Four phosphate adaptor
protein 1 (FAPP1). They have a wide range of purported
functions including sterol transport, cell cycle
control, pollen development and vessicle transport from
Golgi recognize both PI lipids and ARF proteins. PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 88
Score = 31.9 bits (73), Expect = 0.024
Identities = 21/94 (22%), Positives = 32/94 (34%), Gaps = 17/94 (18%)
Query: 42 GYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLNSVK- 100
GYL K F+ W R+F+ + YS + ++G HL
Sbjct: 3 GYLKKWTNIFNSWKPRYFILY---PGILCYSKQKGGPKKG-----------TIHLKICDI 48
Query: 101 --SPSPHLTFVVKSSDRTFHLMAPSAEAMRIWID 132
P L ++ + HL A S E W +
Sbjct: 49 RLVPDDPLRIIINTGTNQLHLRASSVEEKLKWYN 82
>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 = 32.4 bits (74), Expect = 0.026
Identities = 28/100 (28%), Positives = 37/100 (37%), Gaps = 13/100 (13%)
Query: 42 GYLNKMAGRFHH------WNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDH 95
GYL K R H W KRW V T + YY +K+Q+G
Sbjct: 5 GYLEKR--RKDHSFFGSEWQKRWCVLSNT--AFYYYGSEKDKQQKGEFAIDGYRARMNPT 60
Query: 96 LNSVKSPSPHLTFVVKSSD-RTFHLMAPSAEAMRIWIDVI 134
L K F + + D R + A S + R W+D I
Sbjct: 61 LR--KDSKKDCCFEISAPDKRVYQFTAASPKEAREWVDQI 98
>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 = 0.054
Identities = 25/107 (23%), Positives = 38/107 (35%), Gaps = 20/107 (18%)
Query: 36 DATSCRGYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDH 95
S +GYL + W +RW V R L YS + +RG + V++
Sbjct: 12 PVVSKKGYLLFLEDATDGWVRRWVVLRRP--YLHIYSSEKDGDERGVIN---LSTARVEY 66
Query: 96 LNSVKSPSPHL--------TFVVKSSDRTFHLMAPSAEAMRIWIDVI 134
SP F V + ++ L A S + M W+ I
Sbjct: 67 -------SPDQEALLGRPNVFAVYTPTNSYLLQARSEKEMHDWLYAI 106
>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 = 31.1 bits (71), Expect = 0.057
Identities = 24/98 (24%), Positives = 38/98 (38%), Gaps = 19/98 (19%)
Query: 40 CRGYL-----NKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVD 94
G+L KM G F +R+FV + +L+YY + RG R
Sbjct: 2 LEGWLLKKRRKKMQG-FA---RRYFVLNFKYGTLSYYFNP-NSPVRGQIPLR-------- 48
Query: 95 HLNSVKSPSPHLTFVVKSSDRTFHLMAPSAEAMRIWID 132
L S+ + T + S +HL A + E + W+
Sbjct: 49 -LASISASPRRRTIHIDSGSEVWHLKALNDEDFQAWMK 85
>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 = 30.9 bits (70), Expect = 0.082
Identities = 23/100 (23%), Positives = 38/100 (38%), Gaps = 10/100 (10%)
Query: 41 RGYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFR-CIEEVYVDHLNSV 99
+G L K R +W R FV L YY + GA + R C+ V +
Sbjct: 10 QGCLLKQGHRRKNWKVRKFVLRDDPAYLHYYDPAKGEDPLGAIHLRGCV----VTAVEDN 65
Query: 100 KSPSPH-----LTFVVKSSDRTFHLMAPSAEAMRIWIDVI 134
+P+ L ++ + + ++L A + WI I
Sbjct: 66 SNPAKGSVEGNLFEIITADEVHYYLQAATPAERTEWIKAI 105
>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 = 30.8 bits (70), Expect = 0.088
Identities = 24/95 (25%), Positives = 40/95 (42%), Gaps = 17/95 (17%)
Query: 41 RGYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQ--RGATYFRCIEEVYVDHLNS 98
+G+L K + +RWFV + L+YY +++E RG ++ +
Sbjct: 2 KGWLLKWTNYLKGYQRRWFVLS--NGLLSYYRNQAEMAHTCRGT----------INLAGA 49
Query: 99 VKSPSPHLTFVVK-SSDRTFHLMAPS-AEAMRIWI 131
+ FV+ +TFHL A S E R W+
Sbjct: 50 LIHTEDSCNFVISNGGTQTFHLKASSEVERQR-WV 83
>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 = 30.7 bits (69), Expect = 0.097
Identities = 14/45 (31%), Positives = 23/45 (51%), Gaps = 1/45 (2%)
Query: 99 VKSPSPHLTFVVKSSDRTFHLMAPSAEAMRIWIDVIFSGAEGYQE 143
VK H TF++ R+ L A + E + WI VI + E +++
Sbjct: 59 VKQNVAH-TFIITGKKRSLELQARTEEEKKEWIQVIQATIEKHKQ 102
>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 = 29.9 bits (67), Expect = 0.17
Identities = 28/99 (28%), Positives = 41/99 (41%), Gaps = 9/99 (9%)
Query: 41 RGYLNKMA---GRF-HHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHL 96
+GYL K + G F W KRW V R+ YY++ K+ +G + HL
Sbjct: 4 QGYLEKRSKDHGFFGSEWQKRWCVLTT--RAFYYYANEKSKQPKGGFLIKDSLAQMAPHL 61
Query: 97 NSVKSPSPHLTFVVKSSD-RTFHLMAPSAEAMRIWIDVI 134
K F + + + RT+ A S R W+D I
Sbjct: 62 R--KDSRRDSCFELTTPNQRTYEFTAASPSEARDWVDQI 98
>gnl|CDD|241405 cd13251, PH_ASAP, ArfGAP with SH3 domain, ankyrin repeat and PH
domain Pleckstrin homology (PH) domain. ASAPs (ASAP1,
ASAP2, and ASAP3) function as an Arf-specific GAPs,
participates in rhodopsin trafficking, is associated
with tumor cell metastasis, modulates phagocytosis,
promotes cell proliferation, facilitates vesicle
budding, Golgi exocytosis, and regulates vesicle coat
assembly via a Bin/Amphiphysin/Rvs domain. ASAPs contain
an NH2-terminal BAR domain, a tandem PH domain/GAP
domain, three ankyrin repeats, two proline-rich regions,
and a COOH-terminal Src homology 3 (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 = 30.0 bits (68), Expect = 0.18
Identities = 9/27 (33%), Positives = 14/27 (51%)
Query: 108 FVVKSSDRTFHLMAPSAEAMRIWIDVI 134
F + S +RT+H A + WI V+
Sbjct: 71 FDLISHNRTYHFQAEDEQEAEAWISVL 97
>gnl|CDD|241274 cd01241, PH_PKB, Protein Kinase B-like pleckstrin homology (PH)
domain. PKB (also called Akt), a member of the AGC
kinase family, is a phosphatidylinositol 3'-kinase
(PI3K)-dependent Ser/Thr kinase which alters the
activity of the targeted protein. The name AGC is based
on the three proteins that it is most similar to
cAMP-dependent protein kinase 1 (PKA; also known as
PKAC), cGMP-dependent protein kinase (PKG; also known
as CGK1) and protein kinase C (PKC). Human Akt has
three isoforms derived for distinct genes:
Akt1/PKBalpha, Akt2/PKBbeta, and Akt3/PKBgamma. All
Akts have an N-terminal PH domain with an activating
Thr phosphorylation site, a kinase domain, and a short
C-terminal regulatory tail with an activating Ser
phosphorylation site. The PH domain recruits Akt to the
plasma membrane by binding to phosphoinositides
(PtdIns-3,4-P2) and is required for activation. The
phosphorylation of Akt at its Thr and Ser
phosphorylation sites leads to increased Akt activity
toward forkhead transcription factors, the mammalian
target of rapamycin (mTOR), and the
Bcl-xL/Bcl-2-associated death promoter (BAD), all of
which possess a consensus motif R-X-R-XX-ST-B (X =
amino acid, B = bulky hydrophobic residue) for Akt
phosphorylation. PH domains have diverse functions, but
in general are involved in targeting proteins to the
appropriate cellular location or in the interaction
with a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved
across all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 121
Score = 29.6 bits (67), Expect = 0.25
Identities = 8/19 (42%), Positives = 9/19 (47%)
Query: 42 GYLNKMAGRFHHWNKRWFV 60
G+L K W RWFV
Sbjct: 7 GWLTKRGEYIKTWRPRWFV 25
>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 = 29.6 bits (67), Expect = 0.26
Identities = 22/86 (25%), Positives = 32/86 (37%), Gaps = 14/86 (16%)
Query: 54 WNKRWFVFDRTSRSLAYYSDRSEKKQR----GATYFRCIEEVYVDHLNSVKSPSPHLTFV 109
W K WFV SL YY D S ++ G V + + F
Sbjct: 14 WKKHWFVL--RDASLRYYRD-SVAEEAGELDGVIDLSTCTNV------TELPVQRNYGFQ 64
Query: 110 VKSSD-RTFHLMAPSAEAMRIWIDVI 134
+K+ D + + L A ++ R WI I
Sbjct: 65 IKTWDGKRYVLSAMTSGIRRNWIQAI 90
>gnl|CDD|241293 cd01262, PH_PDK1, 3-Phosphoinositide dependent protein kinase 1
(PDK1) pleckstrin homology (PH) domain. PDK1 plays an
important role in insulin and growth factor signalling
cascades. It phosphorylates and activates many AGC
(cAMP-dependent, cGMP-dependent, protein kinase C (PKC))
family of protein kinases members, including protein
kinase B (PKB, also known as Akt), p70 ribosomal
S6-kinase (S6K), serum and glucocorticoid responsive
kinase (SGK), p90 ribosomal S6 kinase (RSK), and PKC.
PDK1 contains an N-terminal serine/threonine kinase
domain followed by a PH domain. Following binding of the
PH domain to PtdIns(3,4,5)P3 and PtdIns(3,4)P2, PDK1
activates these enzymes by phosphorylating a Ser/Thr
residue in their activation loop. 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 = 28.7 bits (65), Expect = 0.52
Identities = 9/28 (32%), Positives = 15/28 (53%), Gaps = 1/28 (3%)
Query: 107 TFVVKSSDRTFHLMAPSAEAMRIWIDVI 134
TF + + +RT++L P A + W I
Sbjct: 73 TFFIHTPNRTYYLEDPEGNAKK-WCKAI 99
>gnl|CDD|177836 PLN02180, PLN02180, gamma-glutamyl transpeptidase 4.
Length = 639
Score = 29.6 bits (66), Expect = 0.65
Identities = 23/80 (28%), Positives = 38/80 (47%), Gaps = 3/80 (3%)
Query: 11 GDSLDLRQHIEAAGHQLEACSHL-TLDATSCRGYLNKMAGRFHHWNKRWFVFDRTSRSLA 69
G L L + IEA H A L + + +N+M + H + +FD T+
Sbjct: 347 GRELGLHRLIEAMKHMFAARMDLGDPEFVNITNAMNQMLSKAHAEEIQKRIFDNTTFPPE 406
Query: 70 YYSDR-SEKKQRGATYFRCI 88
YY +R S+ + +G ++F CI
Sbjct: 407 YYLNRWSQLRDQGTSHF-CI 425
>gnl|CDD|241480 cd13326, PH_CNK_insect-like, Connector enhancer of KSR (Kinase
suppressor of ras) (CNK) pleckstrin homology (PH)
domain. CNK family members function as protein
scaffolds, regulating the activity and the subcellular
localization of RAS activated RAF. There is a single CNK
protein present in Drosophila and Caenorhabditis elegans
in contrast to mammals which have 3 CNK proteins (CNK1,
CNK2, and CNK3). All of the CNK members contain a
sterile a motif (SAM), a conserved region in CNK (CRIC)
domain, and a PSD-95/DLG-1/ZO-1 (PDZ) domain, and a PH
domain. A CNK2 splice variant CNK2A also has a PDZ
domain-binding motif at its C terminus and Drosophila
CNK (D-CNK) also has a domain known as the
Raf-interacting region (RIR) that mediates binding of
the Drosophila Raf kinase. This cd contains CNKs from
insects, spiders, mollusks, and nematodes. PH domains
have diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They share
little sequence conservation, but all have a common
fold, which is electrostatically polarized. Less than
10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 90
Score = 27.7 bits (62), Expect = 0.82
Identities = 21/80 (26%), Positives = 31/80 (38%), Gaps = 7/80 (8%)
Query: 53 HWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLNSVKSPSPHLTFVVKS 112
W KRWFV + +L + + K + + V VKS F V
Sbjct: 17 KWAKRWFVLKGS--NLYGFRSQESTKADCVIF---LPGFTVSPAPEVKSRK--YAFKVYH 69
Query: 113 SDRTFHLMAPSAEAMRIWID 132
+ F+ A S E M+ W+D
Sbjct: 70 TGTVFYFAAESQEDMKKWLD 89
>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 = 28.1 bits (63), Expect = 0.89
Identities = 26/124 (20%), Positives = 46/124 (37%), Gaps = 23/124 (18%)
Query: 31 SHLTL--DATSCRGYLNKMAGR---FHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYF 85
+ LTL D T GYL K G W R+ + + + Y+ + K +G
Sbjct: 1 NLLTLPRDVTHS-GYLTKKGGSQKQLLKWPLRYVIIHK--GCVYYFKNSQSAKPKGV--- 54
Query: 86 RCIEEVYVDHLNSVKSP--SPHLTFVVK-----SSDRTFHLMAPSAEAMRIWIDVIFSGA 138
++ N + + FV K RT++ A S + M+ W++ +
Sbjct: 55 -----FSLNGYNRRAAEETTSKKKFVFKIIHLSKDHRTWYFSAKSEDEMKEWMESLRKEI 109
Query: 139 EGYQ 142
+ Y
Sbjct: 110 DRYC 113
>gnl|CDD|182781 PRK10854, PRK10854, exopolyphosphatase; Provisional.
Length = 513
Score = 28.9 bits (65), Expect = 0.92
Identities = 16/40 (40%), Positives = 24/40 (60%), Gaps = 5/40 (12%)
Query: 42 GYLNKMAGRFHHWNKRWFVFDRTSRSLA-YYSDRSEKKQR 80
G L +M GRF H + R RT++SLA +Y+ E+ +R
Sbjct: 300 GVLYEMEGRFRHQDIR----SRTAKSLANHYNIDREQARR 335
>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 = 27.7 bits (62), Expect = 1.1
Identities = 22/99 (22%), Positives = 40/99 (40%), Gaps = 14/99 (14%)
Query: 41 RGYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLNSVK 100
+GYL K +G+ W +FV + + L ++ + K +G VY H
Sbjct: 6 KGYLLKKSGKNKKWKNLYFVLEGAEQHLYFFENEKRTKPKGLIDLSY-SSVYPVH----- 59
Query: 101 SPS----PHLTFVVKSS---DRTFHLMAPSAEAMRIWID 132
S P+ +V + ++L A +AE + W+
Sbjct: 60 -DSLFGRPNCFQIVVRALNESTIYYLCADTAELAQDWMK 97
>gnl|CDD|203092 pfam04810, zf-Sec23_Sec24, Sec23/Sec24 zinc finger. COPII-coated
vesicles carry proteins from the endoplasmic reticulum
to the Golgi complex. This vesicular transport can be
reconstituted by using three cytosolic components
containing five proteins: the small GTPase Sar1p, the
Sec23p/24p complex, and the Sec13p/Sec31p complex. This
domain is found to be zinc binding domain.
Length = 39
Score = 26.4 bits (59), Expect = 1.3
Identities = 8/19 (42%), Positives = 10/19 (52%), Gaps = 1/19 (5%)
Query: 40 CRGYLNKMAGRFHHWNKRW 58
CR YLN +F +RW
Sbjct: 7 CRAYLNPYC-QFDFGGRRW 24
>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 = 27.2 bits (60), Expect = 1.8
Identities = 13/28 (46%), Positives = 15/28 (53%), Gaps = 1/28 (3%)
Query: 104 PHLTFVVKSSDRTFHLMAPSAEAMRIWI 131
PH +F+V RT L A S E M WI
Sbjct: 64 PH-SFLVSGKQRTLELQARSQEEMIAWI 90
>gnl|CDD|241294 cd01263, PH_anillin, Anillin Pleckstrin homology (PH) domain.
Anillin (Rhotekin/RTKN; also called PLEKHK/Pleckstrin
homology domain-containing family K) is an actin
binding protein involved in cytokinesis. It interacts
with GTP-bound Rho proteins and results in the
inhibition of their GTPase activity. Dysregulation of
the Rho signal transduction pathway has been implicated
in many forms of cancer. Anillin proteins have a
N-terminal HRI domain/ACC (anti-parallel coiled-coil)
finger domain or Rho-binding domain binds small GTPases
from the Rho family. The C-terminal PH domain helps
target anillin to ectopic septin containing foci. PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from
other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved
across all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 119
Score = 27.3 bits (61), Expect = 1.8
Identities = 7/25 (28%), Positives = 11/25 (44%), Gaps = 2/25 (8%)
Query: 41 RGYLN--KMAGRFHHWNKRWFVFDR 63
RG+L + W++RW V
Sbjct: 5 RGFLTVFEDVSGLGAWHRRWCVLRG 29
>gnl|CDD|241448 cd13294, PH_ORP_plant, Plant Oxysterol binding protein related
protein Pleckstrin homology (PH) domain. Plant ORPs
contain a N-terminal PH domain and a C-terminal
OSBP-related domain. Not much is known about its
specific function in plants to date. Members here
include: Arabidopsis, spruce, and petunia. Oxysterol
binding proteins are a multigene family that is
conserved in yeast, flies, worms, mammals and plants. In
general OSBPs and ORPs have been found to be involved in
the transport and metabolism of cholesterol and related
lipids in eukaryotes. They all contain a C-terminal
oxysterol binding domain, and most contain an N-terminal
PH domain. OSBP PH domains bind to membrane
phosphoinositides and thus likely play an important role
in intracellular targeting. They are members of the
oxysterol binding protein (OSBP) family which includes
OSBP, OSBP-related proteins (ORP), Goodpasture antigen
binding protein (GPBP), and Four phosphate adaptor
protein 1 (FAPP1). They have a wide range of purported
functions including sterol transport, cell cycle
control, pollen development and vessicle transport from
Golgi recognize both PI lipids and ARF proteins. PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 100
Score = 26.7 bits (59), Expect = 2.3
Identities = 22/78 (28%), Positives = 32/78 (41%), Gaps = 8/78 (10%)
Query: 54 WNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLNSVKSPSPHLTFVVKSS 113
W RWFV L+YY K G + EV++ + +S S F + +
Sbjct: 15 WRSRWFVLQ--DGVLSYY------KVHGPDKVKPSGEVHLKVSSIRESRSDDKKFYIFTG 66
Query: 114 DRTFHLMAPSAEAMRIWI 131
+T HL A S E W+
Sbjct: 67 TKTLHLRAESREDRAAWL 84
>gnl|CDD|241419 cd13265, PH_evt, Evectin Pleckstrin homology (PH) domain. There
are 2 members of the evectin family (also called
pleckstrin homology domain containing, family B): evt-1
(also called PLEKHB1) and evt-2 (also called PLEKHB2).
evt-1 is specific to the nervous system, where it is
expressed in photoreceptors and myelinating glia. evt-2
is widely expressed in both neural and nonneural
tissues. Evectins possess a single N-terminal PH domain
and a C-terminal hydrophobic region. evt-1 is thought to
function as a mediator of post-Golgi trafficking in
cells that produce large membrane-rich organelles. It is
a candidate gene for the inherited human retinopathy
autosomal dominant familial exudative vitreoretinopathy
and a susceptibility gene for multiple sclerosis. evt-2
is essential for retrograde endosomal membrane transport
from the plasma membrane (PM) to the Golgi. Two membrane
trafficking pathways pass through recycling endosomes: a
recycling pathway and a retrograde pathway that links
the PM to the Golgi/ER. Its PH domain that is unique in
that it specifically recognizes phosphatidylserine (PS),
but not polyphosphoinositides. PS is an anionic
phospholipid class in eukaryotic biomembranes, is highly
enriched in the PM, and plays key roles in various
physiological processes such as the coagulation cascade,
recruitment and activation of signaling molecules, and
clearance of apoptotic cells. PH domains are only found
in eukaryotes. They share little sequence conservation,
but all have a common fold, which is electrostatically
polarized. PH domains have diverse functions, but in
general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 108
Score = 26.9 bits (60), Expect = 2.5
Identities = 24/96 (25%), Positives = 36/96 (37%), Gaps = 9/96 (9%)
Query: 42 GYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSEKKQRGATYFR--CIE-EVYVDHLNS 98
G+L + + W K WFV + L+YY D S + G C V ++
Sbjct: 7 GWLLRQSTILKRWKKNWFVL-YSDGELSYYEDESRRDVEGRINMPIECRNIRVGLEC-RD 64
Query: 99 VKSPSPH----LTFVVKSSDRTFHLMAPSAEAMRIW 130
V+ P L +V + L A SA+ W
Sbjct: 65 VQPPEGRSRDCLLQIVTRDGKRLILCAESADDALAW 100
>gnl|CDD|241278 cd01247, PH_FAPP1_FAPP2, Four phosphate adaptor protein 1 and 2
Pleckstrin homology (PH) domain. Human FAPP1 (also
called PLEKHA3/Pleckstrin homology domain-containing,
family A member 3) regulates secretory transport from
the trans-Golgi network to the plasma membrane. It is
recruited through binding of PH domain to
phosphatidylinositol 4-phosphate (PtdIns(4)P) and a
small GTPase ADP-ribosylation factor 1 (ARF1). These
two binding sites have little overlap the FAPP1 PH
domain to associate with both ligands simultaneously
and independently. FAPP1 has a N-terminal PH domain
followed by a short proline-rich region. FAPP1 is a
member of the oxysterol binding protein (OSBP) family
which includes OSBP, OSBP-related proteins (ORP), and
Goodpasture antigen binding protein (GPBP). They have a
wide range of purported functions including sterol
transport, cell cycle control, pollen development and
vessicle transport from Golgi recognize both PI lipids
and ARF proteins. FAPP2 (also called PLEKHA8/Pleckstrin
homology domain-containing, family A member 8), a
member of the Glycolipid lipid transfer protein(GLTP)
family has an N-terminal PH domain that targets the TGN
and C-terminal GLTP domain. FAPP2 functions to traffic
glucosylceramide (GlcCer) which is made in the Golgi.
It's interaction with vesicle-associated membrane
protein-associated protein (VAP) could be a means of
regulation. Some FAPP2s share the FFAT-like motifs
found in GLTP. PH domains have diverse functions, but
in general are involved in targeting proteins to the
appropriate cellular location or in the interaction
with a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved
across all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 100
Score = 26.6 bits (59), Expect = 2.5
Identities = 13/35 (37%), Positives = 15/35 (42%), Gaps = 2/35 (5%)
Query: 42 GYLNKMAGRFHHWNKRWFVFDRTSRSLAYYSDRSE 76
G L K W RWFV D L+YY + E
Sbjct: 3 GVLYKWTNYLSGWQPRWFVLDDG--VLSYYKSQEE 35
>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 = 2.7
Identities = 16/51 (31%), Positives = 24/51 (47%), Gaps = 6/51 (11%)
Query: 35 LDATSCRGYL--NKMAGRF--HHWNKRWFVFDRTSRSLAYYSDRSEKKQRG 81
L C G+L K A F W + WFV + SL +Y++ ++K G
Sbjct: 10 LGRGDCDGWLWKKKEAKGFFGQKWKRYWFVLKGS--SLYWYNNPQDEKAEG 58
>gnl|CDD|241449 cd13295, PH_EFA6, Exchange Factor for ARF6 Pleckstrin homology (PH)
domain. EFA6 (also called PSD/pleckstrin and Sec7
domain containing) is an guanine nucleotide exchange
factor for ADP ribosylation factor 6 (ARF6), which is
involved in membrane recycling. EFA6 has four
structurally related polypeptides: EFA6A, EFA6B, EFA6C
and EFA6D. It consists of a N-terminal proline rich
region (PR), a SEC7 domain, a PH domain, a PR, a
coiled-coil region, and a C-terminal PR. The EFA6 PH
domain regulates its association with the plasma
membrane. EFA6 activates Arf6 through its Sec7 catalytic
domain and modulates this activity through its
C-terminal domain, which rearranges the actin
cytoskeleton in fibroblastic cell lines. PH domains have
diverse functions, but in general are involved in
targeting proteins to the appropriate cellular location
or in the interaction with a binding partner. They share
little sequence conservation, but all have a common
fold, which is electrostatically polarized. Less than
10% of PH domains bind phosphoinositide phosphates
(PIPs) with high affinity and specificity. PH domains
are distinguished from other PIP-binding domains by
their specific high-affinity binding to PIPs with two
vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2
or PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 126
Score = 26.5 bits (59), Expect = 3.4
Identities = 21/88 (23%), Positives = 36/88 (40%), Gaps = 8/88 (9%)
Query: 54 WNKR-WFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLNSVKSPSPHLT----- 107
KR W +F T + L Y + E + + + H +S+ + T
Sbjct: 27 RGKRGWKMFYATLKGLVLYLHKDEYGCKKQLSYESLRNAISVH-HSLAEKATDYTKKPHV 85
Query: 108 FVVKSSD-RTFHLMAPSAEAMRIWIDVI 134
F ++++D R F A E M+ WI+ I
Sbjct: 86 FRLQTADWREFLFQASDTEEMQSWIEAI 113
>gnl|CDD|241254 cd01219, PH1_FGD1, FYVE, RhoGEF and PH domain
containing/faciogenital dysplasia protein 1 pleckstrin
homology (PH), N-terminal domain. In general, FGDs have
a RhoGEF (DH) domain, followed by an N-terminal PH
domain, a FYVE domain and a C-terminal PH domain. All
FGDs are guanine nucleotide exchange factors that
activates the Rho GTPase Cdc42, an important regulator
of membrane trafficking. The RhoGEF domain is
responsible for GEF catalytic activity, while the
N-terminal PH domain is involved in intracellular
targeting of the DH domain. Mutations in the FGD1 gene
are responsible for the X-linked disorder known as
faciogenital dysplasia (FGDY). Both FGD1 and FGD3 are
targeted by the ubiquitin ligase SCF(FWD1/beta-TrCP)
upon phosphorylation of two serine residues in its
DSGIDS motif and subsequently degraded by the
proteasome. However, FGD1 and FGD3 induced significantly
different morphological changes in HeLa Tet-Off cells
and while FGD1 induced long finger-like protrusions,
FGD3 induced broad sheet-like protrusions when the level
of GTP-bound Cdc42 was significantly increased by the
inducible expression of FGD3. They also reciprocally
regulated cell motility in inducibly expressed in HeLa
Tet-Off cells, FGD1 stimulated cell migration while FGD3
inhibited it. FGD1 and FGD3 therefore play different
roles to regulate cellular functions, even though their
intracellular levels are tightly controlled by the same
destruction pathway through SCF(FWD1/beta-TrCP). PH
domains have diverse functions, but in general are
involved in targeting proteins to the appropriate
cellular location or in the interaction with a binding
partner. They share little sequence conservation, but
all have a common fold, which is electrostatically
polarized. Less than 10% of PH domains bind
phosphoinositide phosphates (PIPs) with high affinity
and specificity. PH domains are distinguished from other
PIP-binding domains by their specific high-affinity
binding to PIPs with two vicinal phosphate groups:
PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which
results in targeting some PH domain proteins to the
plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 107
Score = 26.1 bits (57), Expect = 4.0
Identities = 16/44 (36%), Positives = 23/44 (52%), Gaps = 2/44 (4%)
Query: 93 VDHLNSVKSPSPHL--TFVVKSSDRTFHLMAPSAEAMRIWIDVI 134
VD + +S SP+L TF+V R+ L A + E + WI I
Sbjct: 50 VDGMELKESSSPNLPRTFLVSGKQRSLELQARTEEEKKDWIQAI 93
>gnl|CDD|215372 PLN02689, PLN02689, Bifunctional isoaspartyl
peptidase/L-asparaginase.
Length = 318
Score = 26.6 bits (59), Expect = 4.9
Identities = 9/14 (64%), Positives = 10/14 (71%)
Query: 37 ATSCRGYLNKMAGR 50
ATS G +NKM GR
Sbjct: 203 ATSTGGLVNKMVGR 216
>gnl|CDD|219419 pfam07462, MSP1_C, Merozoite surface protein 1 (MSP1) C-terminus.
This family represents the C-terminal region of
merozoite surface protein 1 (MSP1) which are found in a
number of Plasmodium species. MSP-1 is a 200-kDa protein
expressed on the surface of the P. vivax merozoite.
MSP-1 of Plasmodium species is synthesised as a
high-molecular-weight precursor and then processed into
several fragments. At the time of red cell invasion by
the merozoite, only the 19-kDa C-terminal fragment
(MSP-119), which contains two epidermal growth
factor-like domains, remains on the surface. Antibodies
against MSP-119 inhibit merozoite entry into red cells,
and immunisation with MSP-119 protects monkeys from
challenging infections. Hence, MSP-119 is considered a
promising vaccine candidate.
Length = 574
Score = 26.8 bits (59), Expect = 4.9
Identities = 10/25 (40%), Positives = 15/25 (60%)
Query: 76 EKKQRGATYFRCIEEVYVDHLNSVK 100
E Q G +Y+ + E+Y D L +VK
Sbjct: 469 ETAQDGISYYNKMIELYKDQLEAVK 493
>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 = 25.7 bits (57), Expect = 6.0
Identities = 7/26 (26%), Positives = 16/26 (61%)
Query: 107 TFVVKSSDRTFHLMAPSAEAMRIWID 132
+ + S ++T L+APS + +W++
Sbjct: 77 SIIYGSHNKTLDLVAPSEDEANLWVE 102
>gnl|CDD|241287 cd01256, PH_dynamin, Dynamin pleckstrin homology (PH) domain.
Dynamin is a GTPase that regulates endocytic vesicle
formation. It has an N-terminal GTPase domain, followed
by a PH domain, a GTPase effector domain and a
C-terminal proline arginine rich domain. Dynamin-like
proteins, which are found in metazoa, plants and yeast
have the same domain architecture as dynamin, but lack
the PH domain. PH domains have diverse functions, but
in general are involved in targeting proteins to the
appropriate cellular location or in the interaction
with a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved
across all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 112
Score = 25.7 bits (57), Expect = 6.6
Identities = 10/23 (43%), Positives = 16/23 (69%), Gaps = 2/23 (8%)
Query: 58 WFVFDRTSRSLAYYSDRSEKKQR 80
WFV T+ SL++Y D EK+++
Sbjct: 25 WFVL--TAESLSWYKDEEEKEKK 45
>gnl|CDD|241482 cd13328, PH1_FDG_family, FYVE, RhoGEF and PH domain
containing/faciogenital dysplasia family proteins
pleckstrin homology (PH), N-terminal domain. In
general, FGDs have a RhoGEF (DH) domain, followed by an
N-terminal PH domain, a FYVE domain and a C-terminal PH
domain. All FGDs are guanine nucleotide exchange factors
that activates the Rho GTPase Cdc42, an important
regulator of membrane trafficking. The RhoGEF domain is
responsible for GEF catalytic activity, while the
N-terminal PH domain is involved in intracellular
targeting of the DH domain. Mutations in the FGD1 gene
are responsible for the X-linked disorder known as
faciogenital dysplasia (FGDY). PH domains have diverse
functions, but in general are involved in targeting
proteins to the appropriate cellular location or in the
interaction with a binding partner. They share little
sequence conservation, but all have a common fold, which
is electrostatically polarized. Less than 10% of PH
domains bind phosphoinositide phosphates (PIPs) with
high affinity and specificity. PH domains are
distinguished from other PIP-binding domains by their
specific high-affinity binding to PIPs with two vicinal
phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or
PtdIns(3,4,5)P3 which results in targeting some PH
domain proteins to the plasma membrane. A few display
strong specificity in lipid binding. Any specificity is
usually determined by loop regions or insertions in the
N-terminus of the domain, which are not conserved across
all PH domains. PH domains are found in cellular
signaling proteins such as serine/threonine kinase,
tyrosine kinases, regulators of G-proteins, endocytotic
GTPases, adaptors, as well as cytoskeletal associated
molecules and in lipid associated enzymes.
Length = 91
Score = 25.1 bits (55), Expect = 8.2
Identities = 19/80 (23%), Positives = 30/80 (37%), Gaps = 10/80 (12%)
Query: 62 DRTSRSLAYYSDR-----SEKKQRGATYFRCIEEVYVDHLN---SVKSPSPHLTFVVKSS 113
R L ++D + + G Y + VD +N PH TF ++
Sbjct: 14 TSQERHLFLFNDMLLYCVPKLRLIGQKYGV-RARMDVDGMNVQVVKGDEVPH-TFYIEGK 71
Query: 114 DRTFHLMAPSAEAMRIWIDV 133
++ L A +AE WID
Sbjct: 72 QKSLELQASTAEEKDAWIDA 91
>gnl|CDD|221786 pfam12814, Mcp5_PH, Meiotic cell cortex C-terminal pleckstrin
homology. The PH domain of these largely fungal
proteins is necessary for the cortical localisation of
the protein during meiosis, since the overall function
of the protein is to anchor dynein at the cell cortex
during the horsetail phase. During prophase I of fission
yeast, horsetail nuclear movement occurs, and this
starts when all the telomeres become bundled at the
spindle pole body - SPB. Subsequent to this, the nucleus
undergoes a dynamic oscillation, resulting in elongated
nuclear morphology. Horsetail nuclear movement is
thought to be predominantly due to the pulling of astral
microtubules that link the SPB to cortical
microtubule-attachment sites at the opposite end of the
cell; the pulling force is believed to be provided by
cytoplasmic dynein and dynactin.
Length = 121
Score = 25.4 bits (56), Expect = 8.6
Identities = 21/83 (25%), Positives = 37/83 (44%), Gaps = 11/83 (13%)
Query: 56 KRWFVFDRTSRSLAYYSDRSEKKQRGATYFRCIEEVYVDHLNSVKSPSPHLTF------- 108
KR+F +R+L Y+S + K ++ + + V ++ + SVK +P
Sbjct: 32 KRYFWVHPYTRTL-YWSSPNPKSEKVSEGK--SKSVPIESVTSVKDGNPLPKGLKRFNKS 88
Query: 109 -VVKSSDRTFHLMAPSAEAMRIW 130
V+ + DR AP+ E IW
Sbjct: 89 IVIVTPDRAIKFTAPTRERHNIW 111
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
0.324 0.136 0.433
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: 7,463,811
Number of extensions: 627967
Number of successful extensions: 751
Number of sequences better than 10.0: 1
Number of HSP's gapped: 712
Number of HSP's successfully gapped: 80
Length of query: 146
Length of database: 10,937,602
Length adjustment: 88
Effective length of query: 58
Effective length of database: 7,034,450
Effective search space: 407998100
Effective search space used: 407998100
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 15 ( 7.0 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 40 (21.6 bits)
S2: 54 (24.8 bits)