RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy12925
(83 letters)
>gnl|CDD|132774 cd06864, PX_SNX4, The phosphoinositide binding Phox Homology domain
of Sorting Nexin 4. The PX domain is a phosphoinositide
(PI) binding module present in many proteins with
diverse functions. Sorting nexins (SNXs) make up the
largest group among PX domain containing proteins. They
are involved in regulating membrane traffic and protein
sorting in the endosomal system. The PX domain of SNXs
binds PIs and targets the protein to PI-enriched
membranes. SNXs differ from each other in PI-binding
specificity and affinity, and the presence of other
protein-protein interaction domains, which help
determine subcellular localization and specific function
in the endocytic pathway. SNX4 is involved in recycling
traffic from the sorting endosome (post-Golgi endosome)
back to the late Golgi. It shows a similar domain
architecture as SNX1-2, among others, containing a
Bin/Amphiphysin/Rvs (BAR) domain, which detects membrane
curvature, C-terminal to the PX domain. SNX4 is
implicated in the regulation of plasma membrane receptor
trafficking and interacts with receptors for EGF,
insulin, platelet-derived growth factor and the long
form of the leptin receptor.
Length = 129
Score = 103 bits (260), Expect = 1e-30
Identities = 41/63 (65%), Positives = 50/63 (79%), Gaps = 2/63 (3%)
Query: 17 KLSIVWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDITDPDFVDRRRA 76
KLS +WRRYSEFE ++NYL TYPYVI+PPLPEK+ F+W+ S+D DPDFV+RRRA
Sbjct: 44 KLSSLWRRYSEFELLRNYLVVTYPYVIVPPLPEKRAMFMWQK--LSSDTFDPDFVERRRA 101
Query: 77 SLE 79
LE
Sbjct: 102 GLE 104
>gnl|CDD|132768 cd06093, PX_domain, The Phox Homology domain, a phosphoinositide
binding module. The PX domain is a phosphoinositide
(PI) binding module involved in targeting proteins to
membranes. Proteins containing PX domains interact with
PIs and have been implicated in highly diverse
functions such as cell signaling, vesicular
trafficking, protein sorting, lipid modification, cell
polarity and division, activation of T and B cells, and
cell survival. Many members of this superfamily bind
phosphatidylinositol-3-phosphate (PI3P) but in some
cases, other PIs such as PI4P or PI(3,4)P2, among
others, are the preferred substrates. In addition to
protein-lipid interaction, the PX domain may also be
involved in protein-protein interaction, as in the
cases of p40phox, p47phox, and some sorting nexins
(SNXs). The PX domain is conserved from yeast to humans
and is found in more than 100 proteins. The majority of
PX domain-containing proteins are SNXs, which play
important roles in endosomal sorting.
Length = 106
Score = 57.8 bits (140), Expect = 1e-12
Identities = 25/67 (37%), Positives = 36/67 (53%), Gaps = 10/67 (14%)
Query: 13 PKQNKLSIVWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDITDPDFVD 72
+ + V+RRYS+FE++ L+ +P VILPPLP KK DP+F++
Sbjct: 26 TQGGEEWTVYRRYSDFEELHEKLKKKFPGVILPPLPPKKLFG----------NLDPEFIE 75
Query: 73 RRRASLE 79
RR LE
Sbjct: 76 ERRKQLE 82
>gnl|CDD|132769 cd06859, PX_SNX1_2_like, The phosphoinositide binding Phox
Homology domain of Sorting Nexins 1 and 2. The PX
domain is a phosphoinositide (PI) binding module
present in many proteins with diverse functions.
Sorting nexins (SNXs) make up the largest group among
PX domain containing proteins. They are involved in
regulating membrane traffic and protein sorting in the
endosomal system. The PX domain of SNXs binds PIs and
targets the protein to PI-enriched membranes. SNXs
differ from each other in PI-binding specificity and
affinity, and the presence of other protein-protein
interaction domains, which help determine subcellular
localization and specific function in the endocytic
pathway. This subfamily consists of SNX1, SNX2, and
similar proteins. They harbor a Bin/Amphiphysin/Rvs
(BAR) domain, which detects membrane curvature,
C-terminal to the PX domain. Both domains have been
shown to determine the specific membrane-targeting of
SNX1. SNX1 and SNX2 are components of the retromer
complex, a membrane coat multimeric complex required
for endosomal retrieval of lysosomal hydrolase
receptors to the Golgi. The retromer consists of a
cargo-recognition subcomplex and a subcomplex formed by
a dimer of sorting nexins (SNX1 and/or SNX2), which
ensures effcient cargo sorting by facilitating proper
membrane localization of the cargo-recognition
subcomplex.
Length = 114
Score = 55.3 bits (134), Expect = 1e-11
Identities = 22/62 (35%), Positives = 30/62 (48%), Gaps = 8/62 (12%)
Query: 19 SIVWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDITDPDFVDRRRASL 78
V RRYS+F + L YP I+PP PEK A +F+++RRA+L
Sbjct: 37 FSVLRRYSDFLWLYERLVEKYPGRIVPPPPEK--------QAVGRFKVKFEFIEKRRAAL 88
Query: 79 EV 80
E
Sbjct: 89 ER 90
>gnl|CDD|214610 smart00312, PX, PhoX homologous domain, present in p47phox and
p40phox. Eukaryotic domain of unknown function present
in phox proteins, PLD isoforms, a PI3K isoform.
Length = 105
Score = 53.5 bits (129), Expect = 4e-11
Identities = 22/60 (36%), Positives = 33/60 (55%), Gaps = 7/60 (11%)
Query: 21 VWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDITDPDFVDRRRASLEV 80
V RRYS+F ++ + L+ +P ILPPLP KK F + +F+++RR LE
Sbjct: 30 VSRRYSDFLELHSKLKKHFPRSILPPLPGKK-LFG------RLNNFSEEFIEKRRRGLEK 82
>gnl|CDD|216119 pfam00787, PX, PX domain. PX domains bind to phosphoinositides.
Length = 109
Score = 53.5 bits (129), Expect = 5e-11
Identities = 21/60 (35%), Positives = 30/60 (50%), Gaps = 10/60 (16%)
Query: 21 VWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDITDPDFVDRRRASLEV 80
V RRYS+FE++ L +P I+PPLP KK +F+++RR LE
Sbjct: 36 VKRRYSDFEELHKQLLRKFPGRIIPPLPPKKL----------FGRFSEEFIEKRRKGLEE 85
>gnl|CDD|132777 cd06867, PX_SNX41_42, The phosphoinositide binding Phox Homology
domain of fungal Sorting Nexins 41 and 42. The PX
domain is a phosphoinositide (PI) binding module
present in many proteins with diverse functions.
Sorting nexins (SNXs) make up the largest group among
PX domain containing proteins. They are involved in
regulating membrane traffic and protein sorting in the
endosomal system. The PX domain of SNXs binds PIs and
targets the protein to PI-enriched membranes. SNXs
differ from each other in PI-binding specificity and
affinity, and the presence of other protein-protein
interaction domains, which help determine subcellular
localization and specific function in the endocytic
pathway. Some SNXs are localized in early endosome
structures such as clathrin-coated pits, while others
are located in late structures of the endocytic
pathway. SNX41 and SNX42 (also called Atg20p) form
dimers with SNX4, and are required in protein recycling
from the sorting endosome (post-Golgi endosome) back to
the late Golgi in yeast.
Length = 112
Score = 48.8 bits (117), Expect = 3e-09
Identities = 24/64 (37%), Positives = 34/64 (53%), Gaps = 5/64 (7%)
Query: 19 SIVWRRYSEFEQMKNYLQATYPYVILPPLPEKKP--TFVWKHDAASTDITDPDFVDRRRA 76
S V RRYSEFE ++ L YP +I+PP+PEK + K A D ++RR+
Sbjct: 28 SEVKRRYSEFESLRKNLTRLYPTLIIPPIPEKHSLKDYAKKPSKAK---NDAKIIERRKR 84
Query: 77 SLEV 80
L+
Sbjct: 85 MLQR 88
>gnl|CDD|132776 cd06866, PX_SNX8_Mvp1p_like, The phosphoinositide binding Phox
Homology domain of Sorting Nexin 8 and yeast Mvp1p.
The PX domain is a phosphoinositide (PI) binding module
present in many proteins with diverse functions.
Sorting nexins (SNXs) make up the largest group among
PX domain containing proteins. They are involved in
regulating membrane traffic and protein sorting in the
endosomal system. The PX domain of SNXs binds PIs and
targets the protein to PI-enriched membranes. SNXs
differ from each other in PI-binding specificity and
affinity, and the presence of other protein-protein
interaction domains, which help determine subcellular
localization and specific function in the endocytic
pathway. Some SNXs are localized in early endosome
structures such as clathrin-coated pits, while others
are located in late structures of the endocytic
pathway. SNX8 and the yeast counterpart Mvp1p are
involved in sorting and delivery of late-Golgi
proteins, such as carboxypeptidase Y, to vacuoles.
Length = 105
Score = 46.1 bits (110), Expect = 4e-08
Identities = 21/61 (34%), Positives = 30/61 (49%), Gaps = 10/61 (16%)
Query: 19 SIVWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDITDPDFVDRRRASL 78
S V+RRYS+F + YL YPY ++P LP K+ D +F++ RR L
Sbjct: 30 STVYRRYSDFVWLHEYLLKRYPYRMVPALPPKRIGGS----------ADREFLEARRRGL 79
Query: 79 E 79
Sbjct: 80 S 80
>gnl|CDD|132808 cd06898, PX_SNX10, The phosphoinositide binding Phox Homology
domain of Sorting Nexin 10. The PX domain is a
phosphoinositide (PI) binding module present in many
proteins with diverse functions. Sorting nexins (SNXs)
make up the largest group among PX domain containing
proteins. They are involved in regulating membrane
traffic and protein sorting in the endosomal system.
The PX domain of SNXs binds PIs and targets the protein
to PI-enriched membranes. SNXs differ from each other
in PI-binding specificity and affinity, and the
presence of other protein-protein interaction domains,
which help determine subcellular localization and
specific function in the endocytic pathway. Some SNXs
are localized in early endosome structures such as
clathrin-coated pits, while others are located in late
structures of the endocytic pathway. SNX10 may be
involved in the regulation of endosome homeostasis. Its
expression induces the formation of giant vacuoles in
mammalian cells.
Length = 113
Score = 44.6 bits (106), Expect = 1e-07
Identities = 20/63 (31%), Positives = 29/63 (46%), Gaps = 9/63 (14%)
Query: 17 KLSIVWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDITDPDFVDRRRA 76
K S V RRYSEF ++N LQ + LP LP K + + F++ R+
Sbjct: 35 KTSCVRRRYSEFVWLRNRLQKNALLIQLPSLPPKNLFGRFN---------NEGFIEERQQ 85
Query: 77 SLE 79
L+
Sbjct: 86 GLQ 88
>gnl|CDD|132771 cd06861, PX_Vps5p, The phosphoinositide binding Phox Homology
domain of yeast sorting nexin Vps5p. The PX domain is
a phosphoinositide (PI) binding module present in many
proteins with diverse functions. Sorting nexins (SNXs)
make up the largest group among PX domain containing
proteins. They are involved in regulating membrane
traffic and protein sorting in the endosomal system.
The PX domain of SNXs binds PIs and targets the protein
to PI-enriched membranes. SNXs differ from each other
in PI-binding specificity and affinity, and the
presence of other protein-protein interaction domains,
which help determine subcellular localization and
specific function in the endocytic pathway. Vsp5p is
the yeast counterpart of human SNX1 and is part of the
retromer complex, which functions in the
endosome-to-Golgi retrieval of vacuolar protein sorting
receptor Vps10p, the Golgi-resident membrane protein
A-ALP, and endopeptidase Kex2. The PX domain of Vps5p
binds phosphatidylinositol-3-phosphate (PI3P). Similar
to SNX1, Vps5p contains a Bin/Amphiphysin/Rvs (BAR)
domain, which detects membrane curvature, C-terminal to
the PX domain. Both domains have been shown to
determine the specific membrane-targeting of SNX1.
Length = 112
Score = 43.1 bits (102), Expect = 6e-07
Identities = 27/78 (34%), Positives = 38/78 (48%), Gaps = 11/78 (14%)
Query: 3 LVTDEDWSLIPKQNKLSIVWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAAS 62
V S + + S V RRY +F + LQ +P VI+PP PEK+ S
Sbjct: 22 TVRTRTTSPNFEVSSFS-VLRRYRDFRWLYRQLQNNHPGVIVPPPPEKQ----------S 70
Query: 63 TDITDPDFVDRRRASLEV 80
D +FV++RRA+LE
Sbjct: 71 VGRFDDNFVEQRRAALEK 88
>gnl|CDD|132786 cd06876, PX_MDM1p, The phosphoinositide binding Phox Homology
domain of yeast MDM1p. The PX domain is a
phosphoinositide binding (PI) module present in many
proteins with diverse functions such as cell signaling,
vesicular trafficking, protein sorting, and lipid
modification, among others. Yeast MDM1p is a
filament-like protein localized in punctate structures
distributed throughout the cytoplasm. It plays an
important role in nuclear and mitochondrial transmission
to daughter buds. Members of this subfamily show similar
domain architectures as some sorting nexins (SNXs). Some
members are similar to SNX19 in that they contain an
N-terminal PXA domain, a central PX domain, and a
C-terminal domain that is conserved in some SNXs. Others
are similar to SNX13 and SNX14, which also harbor these
three domains as well as a regulator of G protein
signaling (RGS) domain in between the PXA and PX
domains. SNXs make up the largest group among PX domain
containing proteins. They are involved in regulating
membrane traffic and protein sorting in the endosomal
system. The PX domain of SNXs binds PIs and targets the
protein to PI-enriched membranes. SNXs differ from each
other in PI-binding specificity and affinity, and the
presence of other protein-protein interaction domains,
which help determine subcellular localization and
specific function in the endocytic pathway.
Length = 133
Score = 42.3 bits (100), Expect = 2e-06
Identities = 20/60 (33%), Positives = 30/60 (50%), Gaps = 8/60 (13%)
Query: 20 IVWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDITDPDFVDRRRASLE 79
+V RRYSEF ++ YL+ YP V+ P+K+ S + V+ RR +LE
Sbjct: 58 VVARRYSEFLELHKYLKKRYPGVLKLDFPQKRKI--------SLKYSKTLLVEERRKALE 109
>gnl|CDD|227680 COG5391, COG5391, Phox homology (PX) domain protein [Intracellular
trafficking and secretion / General function prediction
only].
Length = 524
Score = 42.9 bits (101), Expect = 3e-06
Identities = 21/60 (35%), Positives = 30/60 (50%), Gaps = 5/60 (8%)
Query: 21 VWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDITDPDFVDRRRASLEV 80
V RRYS+FE + + L P +PPLP KK + D +F++ RR SL+
Sbjct: 175 VRRRYSDFESLHSILIKLLPLCAIPPLPSKKSNSEYYGDRF-----SDEFIEERRQSLQN 229
>gnl|CDD|132815 cd07282, PX_SNX2, The phosphoinositide binding Phox Homology
domain of Sorting Nexin 2. The PX domain is a
phosphoinositide (PI) binding module present in many
proteins with diverse functions. Sorting nexins (SNXs)
make up the largest group among PX domain containing
proteins. They are involved in regulating membrane
traffic and protein sorting in the endosomal system.
The PX domain of SNXs binds PIs and targets the protein
to PI-enriched membranes. SNXs differ from each other
in PI-binding specificity and affinity, and the
presence of other protein-protein interaction domains,
which help determine subcellular localization and
specific function in the endocytic pathway. SNX2 is a
component of the retromer complex, a membrane coat
multimeric complex required for endosomal retrieval of
lysosomal hydrolase receptors to the Golgi. The
retromer consists of a cargo-recognition subcomplex and
a subcomplex formed by a dimer of sorting nexins (SNX1
and/or SNX2), which ensures efficient cargo sorting by
facilitating proper membrane localization of the
cargo-recognition subcomplex. Similar to SNX1, SNX2
contains a Bin/Amphiphysin/Rvs (BAR) domain, which
detects membrane curvature, C-terminal to the PX
domain. The PX domain of SNX2 preferentially binds
phosphatidylinositol-3-phosphate (PI3P), but not
PI(3,4,5)P3. Studies on mice deficient with SNX1 and/or
SNX2 suggest that they provide an essential function in
embryogenesis and are functionally redundant.
Length = 124
Score = 41.6 bits (97), Expect = 3e-06
Identities = 23/61 (37%), Positives = 36/61 (59%), Gaps = 2/61 (3%)
Query: 21 VWRRYSEFEQMKNYLQATYPYV--ILPPLPEKKPTFVWKHDAASTDITDPDFVDRRRASL 78
V RR+S+F + + L + Y +V I+PP PEK + K D + +FV++RRA+L
Sbjct: 39 VRRRFSDFLGLHSKLASKYLHVGYIVPPAPEKSIVGMTKVKVGKEDSSSTEFVEKRRAAL 98
Query: 79 E 79
E
Sbjct: 99 E 99
>gnl|CDD|132775 cd06865, PX_SNX_like, The phosphoinositide binding Phox Homology
domain of SNX-like proteins. The PX domain is a
phosphoinositide (PI) binding module present in many
proteins with diverse functions. Sorting nexins (SNXs)
make up the largest group among PX domain containing
proteins. They are involved in regulating membrane
traffic and protein sorting in the endosomal system.
The PX domain of SNXs binds PIs and targets the protein
to PI-enriched membranes. SNXs differ from each other
in PI-binding specificity and affinity, and the
presence of other protein-protein interaction domains,
which help determine subcellular localization and
specific function in the endocytic pathway. Some SNXs
are localized in early endosome structures such as
clathrin-coated pits, while others are located in late
structures of the endocytic pathway. This subfamily is
composed of uncharacterized proteins, predominantly
from plants, with similarity to sorting nexins. A few
members show a similar domain architecture as a
subfamily of sorting nexins, containing a
Bin/Amphiphysin/Rvs (BAR) domain, which detects
membrane curvature, C-terminal to the PX domain. The
PX-BAR structural unit is known to determine specific
membrane localization.
Length = 120
Score = 40.9 bits (96), Expect = 5e-06
Identities = 15/60 (25%), Positives = 27/60 (45%), Gaps = 7/60 (11%)
Query: 21 VWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDITDPDFVDRRRASLEV 80
V RR+ + + + L Y +PP P+ K S + +F+++RR +LE
Sbjct: 44 VRRRFRDVVALADRLAEAYRGAFVPPRPD-------KSVVESQVMQSAEFIEQRRVALEK 96
>gnl|CDD|132770 cd06860, PX_SNX7_30_like, The phosphoinositide binding Phox
Homology domain of Sorting Nexins 7 and 30. The PX
domain is a phosphoinositide (PI) binding module
present in many proteins with diverse functions.
Sorting nexins (SNXs) make up the largest group among
PX domain containing proteins. They are involved in
regulating membrane traffic and protein sorting in the
endosomal system. The PX domain of SNXs binds PIs and
targets the protein to PI-enriched membranes. SNXs
differ from each other in PI-binding specificity and
affinity, and the presence of other protein-protein
interaction domains, which help determine subcellular
localization and specific function in the endocytic
pathway. Some SNXs are localized in early endosome
structures such as clathrin-coated pits, while others
are located in late structures of the endocytic
pathway. This subfamily consists of SNX7, SNX30, and
similar proteins. They harbor a Bin/Amphiphysin/Rvs
(BAR) domain, which detects membrane curvature,
C-terminal to the PX domain, similar to the sorting
nexins SNX1-2, SNX4-6, SNX8, and SNX32. Both domains
have been shown to determine the specific
membrane-targeting of SNX1. The specific function of
the sorting nexins in this subfamily has yet to be
elucidated.
Length = 116
Score = 40.8 bits (96), Expect = 5e-06
Identities = 20/60 (33%), Positives = 29/60 (48%), Gaps = 6/60 (10%)
Query: 20 IVWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDITDPDFVDRRRASLE 79
V RRY +F ++ L+ ++P I+PPLPEK D P+FV R +L
Sbjct: 38 SVRRRYQDFLWLRQKLEESHPTHIIPPLPEKHSVK------GLLDRFSPEFVATRMRALH 91
>gnl|CDD|132804 cd06894, PX_SNX3_like, The phosphoinositide binding Phox Homology
domain of Sorting Nexin 3 and related proteins. The PX
domain is a phosphoinositide (PI) binding module
present in many proteins with diverse functions.
Sorting nexins (SNXs) make up the largest group among
PX domain containing proteins. They are involved in
regulating membrane traffic and protein sorting in the
endosomal system. The PX domain of SNXs binds PIs and
targets the protein to PI-enriched membranes. SNXs
differ from each other in PI-binding specificity and
affinity, and the presence of other protein-protein
interaction domains, which help determine subcellular
localization and specific function in the endocytic
pathway. This subfamily is composed of SNX3, SNX12, and
fungal Grd19. Grd19 is involved in the localization of
late Golgi membrane proteins in yeast. SNX3/Grp19
associates with the retromer complex, a membrane coat
multimeric complex required for endosomal retrieval of
lysosomal hydrolase receptors to the Golgi, and
functions as a cargo-specific adaptor for the retromer.
Length = 123
Score = 40.1 bits (94), Expect = 9e-06
Identities = 22/69 (31%), Positives = 35/69 (50%), Gaps = 8/69 (11%)
Query: 15 QNKLSIVWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHD---AASTDITDPDFV 71
+ K S V RRYS+FE +++ L+ +++PPLP K K I + +F+
Sbjct: 34 KKKESSVRRRYSDFEWLRSELERD-SKIVVPPLPGK----ALKRQLPFRGDDGIFEEEFI 88
Query: 72 DRRRASLEV 80
+ RR LE
Sbjct: 89 EERRKGLET 97
>gnl|CDD|132813 cd07280, PX_YPT35, The phosphoinositide binding Phox Homology
domain of the fungal protein YPT35. The PX domain is a
phosphoinositide (PI) binding module present in many
proteins with diverse functions such as cell signaling,
vesicular trafficking, protein sorting, and lipid
modification, among others. This subfamily is composed
of YPT35 proteins from the fungal subkingdom Dikarya.
The PX domain is involved in targeting of proteins to
PI-enriched membranes, and may also be involved in
protein-protein interaction. The PX domain of YPT35
binds to phosphatidylinositol 3-phosphate (PI3P). It
also serves as a protein interaction domain, binding to
members of the Yip1p protein family, which localize to
the ER and Golgi. YPT35 is mainly associated with
endosomes and together with Yip1p proteins, may be
involved in a specific function in the endocytic
pathway.
Length = 120
Score = 40.0 bits (94), Expect = 9e-06
Identities = 17/63 (26%), Positives = 31/63 (49%), Gaps = 9/63 (14%)
Query: 20 IVWRRYSEFEQMKNYLQATYP---YVILPPLPEKKPTFVWKHDAASTDITDPDFVDRRRA 76
+ ++RYSEF Q++ L +P +P LP K P W + + ++++RR
Sbjct: 40 VAYKRYSEFVQLREALLDEFPRHKRNEIPQLPPKVP---WYDSRVN---LNKAWLEKRRR 93
Query: 77 SLE 79
L+
Sbjct: 94 GLQ 96
>gnl|CDD|132773 cd06863, PX_Atg24p, The phosphoinositide binding Phox Homology
domain of yeast Atg24p, an autophagic degradation
protein. The PX domain is a phosphoinositide (PI)
binding module present in many proteins with diverse
functions. The yeast Atg24p is a sorting nexin (SNX)
which is involved in membrane fusion events at the
vacuolar surface during pexophagy. This is facilitated
via binding of Atg24p to phosphatidylinositol
3-phosphate (PI3P) through its PX domain. SNXs make up
the largest group among PX domain containing proteins.
They are involved in regulating membrane traffic and
protein sorting in the endosomal system. The PX domain
of SNXs binds PIs and targets the protein to
PI-enriched membranes. SNXs differ from each other in
PI-binding specificity and affinity, and the presence
of other protein-protein interaction domains, which
help determine subcellular localization and specific
function in the endocytic pathway.
Length = 118
Score = 39.2 bits (92), Expect = 2e-05
Identities = 21/59 (35%), Positives = 29/59 (49%), Gaps = 5/59 (8%)
Query: 20 IVWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDITDPDFVDRRRASL 78
V RRYS+F + L +P ++PPLP+K D S P+F+ RR SL
Sbjct: 39 KVRRRYSDFVFLHECLSNDFPACVVPPLPDKHRLEYITGDRFS-----PEFITRRAQSL 92
>gnl|CDD|132778 cd06868, PX_HS1BP3, The phosphoinositide binding Phox Homology
domain of HS1BP3. The PX domain is a phosphoinositide
(PI) binding module present in many proteins with
diverse functions such as cell signaling, vesicular
trafficking, protein sorting, and lipid modification,
among others. Hematopoietic lineage cell-specific
protein-1 (HS1) binding protein 3 (HS1BP3) associates
with HS1 proteins through their SH3 domains, suggesting
a role in mediating signaling. It has been reported
that HS1BP3 might affect the IL-2 signaling pathway in
hematopoietic lineage cells. Mutations in HS1BP3 may
also be associated with familial Parkinson disease and
essential tremor. HS1BP3 contains a PX domain, a
leucine zipper, motifs similar to immunoreceptor
tyrosine-based inhibitory motif and proline-rich
regions. The PX domain interacts with PIs and plays a
role in targeting proteins to PI-enriched membranes.
Length = 120
Score = 38.9 bits (91), Expect = 3e-05
Identities = 16/32 (50%), Positives = 21/32 (65%)
Query: 20 IVWRRYSEFEQMKNYLQATYPYVILPPLPEKK 51
+V ++YSEFE++ L YP ILPPLP K
Sbjct: 48 MVSKKYSEFEELYKKLSEKYPGTILPPLPRKA 79
>gnl|CDD|132827 cd07294, PX_SNX12, The phosphoinositide binding Phox Homology
domain of Sorting Nexin 12. The PX domain is a
phosphoinositide (PI) binding module present in many
proteins with diverse functions. Sorting nexins (SNXs)
make up the largest group among PX domain containing
proteins. They are involved in regulating membrane
traffic and protein sorting in the endosomal system.
The PX domain of SNXs binds PIs and targets the protein
to PI-enriched membranes. SNXs differ from each other
in PI-binding specificity and affinity, and the
presence of other protein-protein interaction domains,
which help determine subcellular localization and
specific function in the endocytic pathway. Some SNXs
are localized in early endosome structures such as
clathrin-coated pits, while others are located in late
structures of the endocytic pathway. The specific
function of SNX12 has yet to be elucidated.
Length = 132
Score = 39.3 bits (91), Expect = 3e-05
Identities = 25/65 (38%), Positives = 36/65 (55%), Gaps = 6/65 (9%)
Query: 17 KLSIVWRRYSEFEQMKNYLQATYPYVILPPLPEK--KPTFVWKHDAASTDITDPDFVDRR 74
K S V RRYS+FE +KN L+ +++PPLP K K ++ D I + F++ R
Sbjct: 38 KESCVRRRYSDFEWLKNELERD-SKIVVPPLPGKALKRQLPFRGDEG---IFEESFIEER 93
Query: 75 RASLE 79
R LE
Sbjct: 94 RQGLE 98
>gnl|CDD|132807 cd06897, PX_SNARE, The phosphoinositide binding Phox Homology
domain of SNARE proteins from fungi. The PX domain is
a phosphoinositide (PI) binding module present in many
proteins with diverse functions such as cell signaling,
vesicular trafficking, protein sorting, and lipid
modification, among others. This subfamily is composed
of fungal proteins similar to Saccharomyces cerevisiae
Vam7p. They contain an N-terminal PX domain and a
C-terminal SNARE domain. The SNARE (Soluble NSF
attachment protein receptor) family of proteins are
integral membrane proteins that serve as key factors
for vesicular trafficking. Vam7p is anchored at the
vacuolar membrane through the specific interaction of
its PX domain with phosphatidylinositol-3-phosphate
(PI3P) present in bilayers. It plays an essential role
in vacuole fusion. The PX domain is involved in
targeting of proteins to PI-enriched membranes, and may
also be involved in protein-protein interaction.
Length = 108
Score = 37.6 bits (88), Expect = 7e-05
Identities = 19/59 (32%), Positives = 26/59 (44%), Gaps = 8/59 (13%)
Query: 21 VWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDITDPDFVDRRRASLE 79
V RRYSEF + L++ PLP K F+ ++P V+ RR LE
Sbjct: 31 VSRRYSEFVALHKQLESEVGIEPPYPLPP-KSWFLSTS-------SNPKLVEERRVGLE 81
>gnl|CDD|132817 cd07284, PX_SNX7, The phosphoinositide binding Phox Homology
domain of Sorting Nexin 7. The PX domain is a
phosphoinositide (PI) binding module present in many
proteins with diverse functions. Sorting nexins (SNXs)
make up the largest group among PX domain containing
proteins. They are involved in regulating membrane
traffic and protein sorting in the endosomal system.
The PX domain of SNXs binds PIs and targets the protein
to PI-enriched membranes. SNXs differ from each other
in PI-binding specificity and affinity, and the
presence of other protein-protein interaction domains,
which help determine subcellular localization and
specific function in the endocytic pathway. Some SNXs
are localized in early endosome structures such as
clathrin-coated pits, while others are located in late
structures of the endocytic pathway. SNX7 harbors a
Bin/Amphiphysin/Rvs (BAR) domain, which detects
membrane curvature, C-terminal to the PX domain,
similar to the sorting nexins SNX1-2, SNX4-6, SNX8,
SNX30, and SNX32. Both domains have been shown to
determine the specific membrane-targeting of SNX1. The
specific function of SNX7 has yet to be elucidated.
Length = 116
Score = 37.6 bits (87), Expect = 9e-05
Identities = 23/58 (39%), Positives = 34/58 (58%), Gaps = 6/58 (10%)
Query: 21 VWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDITDPDFVDRRRASL 78
V RRY +F +K L+ +P +I+PPLPEK FV K + + DF++ RR +L
Sbjct: 39 VRRRYQDFLWLKGRLEEAHPTLIIPPLPEK---FVMK---GMVERFNEDFIETRRKAL 90
>gnl|CDD|132816 cd07283, PX_SNX30, The phosphoinositide binding Phox Homology
domain of Sorting Nexin 30. The PX domain is a
phosphoinositide (PI) binding module present in many
proteins with diverse functions. Sorting nexins (SNXs)
make up the largest group among PX domain containing
proteins. They are involved in regulating membrane
traffic and protein sorting in the endosomal system.
The PX domain of SNXs binds PIs and targets the protein
to PI-enriched membranes. SNXs differ from each other
in PI-binding specificity and affinity, and the
presence of other protein-protein interaction domains,
which help determine subcellular localization and
specific function in the endocytic pathway. Some SNXs
are localized in early endosome structures such as
clathrin-coated pits, while others are located in late
structures of the endocytic pathway. SNX30 harbors a
Bin/Amphiphysin/Rvs (BAR) domain, which detects
membrane curvature, C-terminal to the PX domain,
similar to the sorting nexins SNX1-2, SNX4-8, and
SNX32. Both domains have been shown to determine the
specific membrane-targeting of SNX1. The specific
function of SNX30 has yet to be elucidated.
Length = 116
Score = 36.2 bits (83), Expect = 3e-04
Identities = 23/59 (38%), Positives = 35/59 (59%), Gaps = 6/59 (10%)
Query: 21 VWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDITDPDFVDRRRASLE 79
V RRY +F+ ++N L+ + P ++PPLPEK FV K D +FV+ RR +L+
Sbjct: 39 VRRRYQDFDWLRNKLEESQPTHLIPPLPEK---FVVK---GVVDRFSEEFVETRRKALD 91
>gnl|CDD|132793 cd06883, PX_PI3K_C2, The phosphoinositide binding Phox Homology
Domain of Class II Phosphoinositide 3-Kinases. The PX
domain is a phosphoinositide (PI) binding module
present in many proteins with diverse functions. The
Phosphoinositide 3-Kinase (PI3K) family of enzymes
catalyzes the phosphorylation of the 3-hydroxyl group
of the inositol ring of phosphatidylinositol. PI3Ks
play an important role in a variety of fundamental
cellular processes, including cell motility, the Ras
pathway, vesicle trafficking and secretion, immune cell
activation and apoptosis. They are also involved in the
regulation of clathrin-mediated membrane trafficking as
well as ATP-dependent priming of neurosecretory granule
exocytosis. PI3Ks are divided into three main classes
(I, II, and III) based on their substrate specificity,
regulation, and domain structure. Class II PI3Ks
preferentially use PI as a substrate to produce PI3P,
but can also phosphorylate PI4P to produce PI(3,4)P2.
They function as monomers and do not associate with any
regulatory subunits. Class II enzymes contain an
N-terminal Ras binding domain, a lipid binding C2
domain, a PI3K homology domain of unknown function, an
ATP-binding cataytic domain, a PX domain, and a second
C2 domain at the C-terminus. Class II PI3Ks include
three vertebrate isoforms (alpha, beta, and gamma), the
Drosophila PI3K_68D, and similar proteins.
Length = 109
Score = 35.8 bits (83), Expect = 4e-04
Identities = 12/35 (34%), Positives = 20/35 (57%)
Query: 14 KQNKLSIVWRRYSEFEQMKNYLQATYPYVILPPLP 48
Q + S V+R + EF+++ N L +P + LP P
Sbjct: 27 NQTEPSFVFRTFEEFQELHNKLSLLFPSLKLPSFP 61
>gnl|CDD|132828 cd07295, PX_Grd19, The phosphoinositide binding Phox Homology
domain of fungal Grd19. The PX domain is a
phosphoinositide (PI) binding module present in many
proteins with diverse functions. Sorting nexins (SNXs)
make up the largest group among PX domain containing
proteins. They are involved in regulating membrane
traffic and protein sorting in the endosomal system.
The PX domain of SNXs binds PIs and targets the protein
to PI-enriched membranes. SNXs differ from each other
in PI-binding specificity and affinity, and the
presence of other protein-protein interaction domains,
which help determine subcellular localization and
specific function in the endocytic pathway. Grd19 is
involved in the localization of late Golgi membrane
proteins in yeast. Grp19 associates with the retromer
complex, a membrane coat multimeric complex required
for endosomal retrieval of lysosomal hydrolase
receptors to the Golgi, and functions as a
cargo-specific adaptor for the retromer.
Length = 116
Score = 35.6 bits (82), Expect = 4e-04
Identities = 16/32 (50%), Positives = 22/32 (68%)
Query: 19 SIVWRRYSEFEQMKNYLQATYPYVILPPLPEK 50
S V RRYS+FE ++ L+ P V++PPLP K
Sbjct: 38 SSVRRRYSDFEYFRDILERESPRVMIPPLPGK 69
>gnl|CDD|132814 cd07281, PX_SNX1, The phosphoinositide binding Phox Homology
domain of Sorting Nexin 1. The PX domain is a
phosphoinositide (PI) binding module present in many
proteins with diverse functions. Sorting nexins (SNXs)
make up the largest group among PX domain containing
proteins. They are involved in regulating membrane
traffic and protein sorting in the endosomal system.
The PX domain of SNXs binds PIs and targets the protein
to PI-enriched membranes. SNXs differ from each other
in PI-binding specificity and affinity, and the
presence of other protein-protein interaction domains,
which help determine subcellular localization and
specific function in the endocytic pathway. SNX1 is
both membrane associated and a cytosolic protein that
exists as a tetramer in protein complexes. It can
associate reversibly with membranes of the endosomal
compartment, thereby coating these vesicles. SNX1 is a
component of the retromer complex, a membrane coat
multimeric complex required for endosomal retrieval of
lysosomal hydrolase receptors to the Golgi. The
retromer consists of a cargo-recognition subcomplex and
a subcomplex formed by a dimer of sorting nexins (SNX1
and/or SNX2), which ensures efficient cargo sorting by
facilitating proper membrane localization of the
cargo-recognition subcomplex. SNX1 contains a
Bin/Amphiphysin/Rvs (BAR) domain C-terminal to the PX
domain. The PX domain of SNX1 specifically binds
phosphatidylinositol-3-phosphate (PI3P) and PI(3,5)P2,
while the BAR domain detects membrane curvature. Both
domains help determine the specific membrane-targeting
of SNX1, which is localized to a microdomain in early
endosomes where it regulates cation-independent
mannose-6-phosphate receptor retrieval to the trans
Golgi network.
Length = 124
Score = 35.4 bits (81), Expect = 7e-04
Identities = 24/72 (33%), Positives = 38/72 (52%), Gaps = 2/72 (2%)
Query: 10 SLIPKQNKLSIVWRRYSEFEQMKNYLQATYPY--VILPPLPEKKPTFVWKHDAASTDITD 67
SL+ ++K V RR+S+F + L + I+PP PEK + K D +
Sbjct: 28 SLLMFRSKHFTVKRRFSDFLGLYEKLSEKHSQNGFIVPPPPEKSLIGMTKVKVGKEDSSS 87
Query: 68 PDFVDRRRASLE 79
+F++RRRA+LE
Sbjct: 88 AEFLERRRAALE 99
>gnl|CDD|132772 cd06862, PX_SNX9_18_like, The phosphoinositide binding Phox
Homology domain of Sorting Nexins 9 and 18. The PX
domain is a phosphoinositide (PI) binding module
present in many proteins with diverse functions.
Sorting nexins (SNXs) make up the largest group among
PX domain containing proteins. They are involved in
regulating membrane traffic and protein sorting in the
endosomal system. The PX domain of SNXs binds PIs and
targets the protein to PI-enriched membranes. SNXs
differ from each other in PI-binding specificity and
affinity, and the presence of other protein-protein
interaction domains, which help determine subcellular
localization and specific function in the endocytic
pathway. This subfamily consists of SNX9, SNX18, and
similar proteins. They contain an N-terminal Src
Homology 3 (SH3) domain, a PX domain, and a C-terminal
Bin/Amphiphysin/Rvs (BAR) domain. SNX9 is localized to
plasma membrane endocytic sites and acts primarily in
clathrin-mediated endocytosis, while SNX18 is localized
to peripheral endosomal structures, and acts in a
trafficking pathway that is clathrin-independent but
relies on AP-1 and PACS1.
Length = 125
Score = 34.6 bits (80), Expect = 0.001
Identities = 21/61 (34%), Positives = 30/61 (49%), Gaps = 14/61 (22%)
Query: 21 VWRRYSEFEQMKNYLQATYPYVILPPLPEKKPT--FVWKHDAASTDITDPDFVDRRRASL 78
V RRY F+ + L Y + +PPLPEK+ T F + DF+++RR L
Sbjct: 34 VSRRYKHFDWLYERLVEKYSCIAIPPLPEKQVTGRF------------EEDFIEKRRERL 81
Query: 79 E 79
E
Sbjct: 82 E 82
>gnl|CDD|132784 cd06874, PX_KIF16B_SNX23, The phosphoinositide binding Phox
Homology domain of KIF16B kinesin or Sorting Nexin 23.
The PX domain is a phosphoinositide (PI) binding module
present in many proteins with diverse functions such as
cell signaling, vesicular trafficking, protein sorting,
and lipid modification, among others. KIF16B, also
called sorting nexin 23 (SNX23), is a family-3 kinesin
which harbors an N-terminal kinesin motor domain
containing ATP and microtubule binding sites, a
ForkHead Associated (FHA) domain, and a C-terminal PX
domain. The PX domain of KIF16B binds to
phosphatidylinositol-3-phosphate (PI3P) in early
endosomes and plays a role in the transport of early
endosomes to the plus end of microtubules. By
regulating early endosome plus end motility, KIF16B
modulates the balance between recycling and degradation
of receptors. SNXs make up the largest group among PX
domain containing proteins. They are involved in
regulating membrane traffic and protein sorting in the
endosomal system. The PX domain of SNXs binds PIs and
targets the protein to PI-enriched membranes. SNXs
differ from each other in PI-binding specificity and
affinity, and the presence of other protein-protein
interaction domains, which help determine subcellular
localization and specific function in the endocytic
pathway.
Length = 127
Score = 34.3 bits (79), Expect = 0.001
Identities = 22/76 (28%), Positives = 28/76 (36%), Gaps = 20/76 (26%)
Query: 4 VTDEDWSLIPKQNKLSIVWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAAST 63
V DE W+ V+RRYS F ++ ++ YP V P KK F K
Sbjct: 27 VLDETWT----------VFRRYSRFRELHKTMKLKYPEVAALEFPPKK-LFGNK------ 69
Query: 64 DITDPDFVDRRRASLE 79
RR LE
Sbjct: 70 ---SERVAKERRRQLE 82
>gnl|CDD|132826 cd07293, PX_SNX3, The phosphoinositide binding Phox Homology
domain of Sorting Nexin 3. The PX domain is a
phosphoinositide (PI) binding module present in many
proteins with diverse functions. Sorting nexins (SNXs)
make up the largest group among PX domain containing
proteins. They are involved in regulating membrane
traffic and protein sorting in the endosomal system.
The PX domain of SNXs binds PIs and targets the protein
to PI-enriched membranes. SNXs differ from each other
in PI-binding specificity and affinity, and the
presence of other protein-protein interaction domains,
which help determine subcellular localization and
specific function in the endocytic pathway. SNX3
associates with early endosomes through a PX
domain-mediated interaction with
phosphatidylinositol-3-phosphate (PI3P). It associates
with the retromer complex, a membrane coat multimeric
complex required for endosomal retrieval of lysosomal
hydrolase receptors to the Golgi, and functions as a
cargo-specific adaptor for the retromer. SNX3 is
required for the formation of multivesicular bodies,
which function as transport intermediates to late
endosomes. It also promotes cell surface expression of
the amiloride-sensitive epithelial Na+ channel (ENaC),
which is critical in sodium homeostasis and maintenance
of extracellular fluid volume.
Length = 123
Score = 34.2 bits (78), Expect = 0.002
Identities = 23/63 (36%), Positives = 33/63 (52%), Gaps = 2/63 (3%)
Query: 17 KLSIVWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDITDPDFVDRRRA 76
K S V RRYS+FE +++ L+ V++PPLP K F I D F++ R+
Sbjct: 36 KESTVRRRYSDFEWLRSELERE-SKVVVPPLP-GKALFRQLPFRGDDGIFDDSFIEERKQ 93
Query: 77 SLE 79
LE
Sbjct: 94 GLE 96
>gnl|CDD|132810 cd07277, PX_RUN, The phosphoinositide binding Phox Homology
domain of uncharacterized proteins containing PX and
RUN domains. The PX domain is a phosphoinositide (PI)
binding module involved in targeting proteins to
PI-enriched membranes. Members in this subfamily are
uncharacterized proteins containing an N-terminal RUN
domain and a C-terminal PX domain. PX domain harboring
proteins have been implicated in highly diverse
functions such as cell signaling, vesicular
trafficking, protein sorting, lipid modification, cell
polarity and division, activation of T and B cells, and
cell survival. In addition to protein-lipid
interaction, the PX domain may also be involved in
protein-protein interaction. The RUN domain is found in
GTPases in the Rap and Rab families and may play a role
in Ras-like signaling pathways.
Length = 118
Score = 31.9 bits (73), Expect = 0.013
Identities = 23/75 (30%), Positives = 34/75 (45%), Gaps = 20/75 (26%)
Query: 6 DEDWSLIPKQNKLSIVWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDI 65
D++W+ V+RRYSEF ++ L+ +P V P KK + DA
Sbjct: 29 DDEWN----------VYRRYSEFYELHKKLKKKFPVVRSFDFPPKKA--IGNKDAK---- 72
Query: 66 TDPDFVDRRRASLEV 80
FV+ RR L+V
Sbjct: 73 ----FVEERRKRLQV 83
>gnl|CDD|132779 cd06869, PX_UP2_fungi, The phosphoinositide binding Phox Homology
domain of uncharacterized fungal proteins. The PX
domain is a phosphoinositide (PI) binding module
involved in targeting proteins to PI-enriched
membranes. Members in this subfamily are
uncharacterized fungal proteins containing a PX domain.
PX domain harboring proteins have been implicated in
highly diverse functions such as cell signaling,
vesicular trafficking, protein sorting, lipid
modification, cell polarity and division, activation of
T and B cells, and cell survival. In addition to
protein-lipid interaction, the PX domain may also be
involved in protein-protein interaction.
Length = 119
Score = 31.1 bits (71), Expect = 0.027
Identities = 13/38 (34%), Positives = 23/38 (60%)
Query: 14 KQNKLSIVWRRYSEFEQMKNYLQATYPYVILPPLPEKK 51
++ + V RRYS+F+++ + L+ +P LP LP K
Sbjct: 45 EEYRTIYVARRYSDFKKLHHDLKKEFPGKKLPKLPHKD 82
>gnl|CDD|132783 cd06873, PX_SNX13, The phosphoinositide binding Phox Homology
domain of Sorting Nexin 13. The PX domain is a
phosphoinositide (PI) binding module present in many
proteins with diverse functions. Sorting nexins (SNXs)
make up the largest group among PX domain containing
proteins. They are involved in regulating membrane
traffic and protein sorting in the endosomal system.
The PX domain of SNXs binds PIs and targets the protein
to PI-enriched membranes. SNXs differ from each other
in PI-binding specificity and affinity, and the
presence of other protein-protein interaction domains,
which help determine subcellular localization and
specific function in the endocytic pathway. SNX13, also
called RGS-PX1, contains an N-terminal PXA domain, a
regulator of G protein signaling (RGS) domain, a PX
domain, and a C-terminal domain that is conserved in
some SNXs. It specifically binds to the stimulatory
subunit of the heterotrimeric G protein G(alpha)s,
serving as its GTPase activating protein, through the
RGS domain. It preferentially binds
phosphatidylinositol-3-phosphate (PI3P) through the PX
domain and is localized in early endosomes. SNX13 is
involved in endosomal sorting of EGFR into
multivesicular bodies (MVB) for delivery to the
lysosome.
Length = 120
Score = 30.7 bits (70), Expect = 0.030
Identities = 18/58 (31%), Positives = 29/58 (50%), Gaps = 10/58 (17%)
Query: 21 VWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDITDPDFVDRRRASL 78
V+RRYS+F + L+ +P + P KK TF ++ D F+++RR L
Sbjct: 43 VYRRYSDFHDLHMRLKEKFPNLSKLSFPGKK-TF---NN------LDRAFLEKRRKML 90
>gnl|CDD|132819 cd07286, PX_SNX18, The phosphoinositide binding Phox Homology
domain of Sorting Nexin 18. The PX domain is a
phosphoinositide (PI) binding module present in many
proteins with diverse functions. Sorting nexins (SNXs)
make up the largest group among PX domain containing
proteins. They are involved in regulating membrane
traffic and protein sorting in the endosomal system.
The PX domain of SNXs binds PIs and targets the protein
to PI-enriched membranes. SNXs differ from each other
in PI-binding specificity and affinity, and the
presence of other protein-protein interaction domains,
which help determine subcellular localization and
specific function in the endocytic pathway. SNX18, like
SNX9, contains an N-terminal Src Homology 3 (SH3)
domain, a PX domain, and a C-terminal
Bin/Amphiphysin/Rvs (BAR) domain, which detects
membrane curvature. The PX-BAR structural unit helps
determine specific membrane localization. SNX18 is
localized to peripheral endosomal structures, and acts
in a trafficking pathway that is clathrin-independent
but relies on AP-1 and PACS1.
Length = 127
Score = 30.8 bits (69), Expect = 0.038
Identities = 20/70 (28%), Positives = 33/70 (47%), Gaps = 11/70 (15%)
Query: 9 WSLIPKQNKLSIVWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDITDP 68
+ L+P L V RRY F+ + L +P + +P +PEK+ T ++
Sbjct: 23 YKLVPSHTGLQ-VHRRYKHFDWLYARLAEKFPVISVPHIPEKQATGRFEE---------- 71
Query: 69 DFVDRRRASL 78
DF+ +RR L
Sbjct: 72 DFISKRRKGL 81
>gnl|CDD|132780 cd06870, PX_CISK, The phosphoinositide binding Phox Homology
Domain of Cytokine-Independent Survival Kinase. The PX
domain is a phosphoinositide (PI) binding module
present in many proteins with diverse functions.
Cytokine-independent survival kinase (CISK), also
called Serum- and Glucocorticoid-induced Kinase 3
(SGK3), plays a role in cell growth and survival. It is
expressed in most tissues and is most abundant in the
embryo and adult heart and spleen. It was originally
discovered in a screen for antiapoptotic genes. It
phosphorylates and inhibits the proapoptotic proteins,
Bad and FKHRL1. CISK/SGK3 also regulates many
transporters, ion channels, and receptors. It plays a
critical role in hair follicle morphogenesis and hair
cycling. N-terminal to a catalytic kinase domain, CISK
contains a PX domain which binds highly phosphorylated
PIs, directs membrane localization, and regulates the
enzyme's activity.
Length = 109
Score = 30.1 bits (68), Expect = 0.054
Identities = 19/58 (32%), Positives = 31/58 (53%), Gaps = 10/58 (17%)
Query: 21 VWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDITDPDFVDRRRASL 78
V+RRY+EF+++ L+ +P L +P K+ + DPDF+ +RRA L
Sbjct: 36 VFRRYAEFDKLYESLKKQFPASNL-KIPGKR---------LFGNNFDPDFIKQRRAGL 83
>gnl|CDD|132785 cd06875, PX_IRAS, The phosphoinositide binding Phox Homology
domain of the Imidazoline Receptor Antisera-Selected.
The PX domain is a phosphoinositide binding (PI) module
present in many proteins with diverse functions such as
cell signaling, vesicular trafficking, protein sorting,
and lipid modification, among others. Imidazoline
Receptor Antisera-Selected (IRAS), also called
nischarin, contains an N-terminal PX domain, leucine
rich repeats, and a predicted coiled coil domain. The
PX domain of IRAS binds to
phosphatidylinositol-3-phosphate in membranes. Together
with the coiled coil domain, it is essential for the
localization of IRAS to endosomes. IRAS has been shown
to interact with integrin and inhibit cell migration.
Its interaction with alpha5 integrin causes a
redistribution of the receptor from the cell surface to
endosomal structures, suggesting that IRAS may function
as a sorting nexin (SNX) which regulates the endosomal
trafficking of integrin. SNXs make up the largest group
among PX domain containing proteins. They are involved
in regulating membrane traffic and protein sorting in
the endosomal system. SNXs differ from each other in
PI-binding specificity and affinity, and the presence
of other protein-protein interaction domains, which
help determine subcellular localization and specific
function in the endocytic pathway.
Length = 116
Score = 29.2 bits (66), Expect = 0.12
Identities = 20/63 (31%), Positives = 30/63 (47%), Gaps = 17/63 (26%)
Query: 21 VWRRYSEFEQMKNYLQATYPYV---ILPPLPEKKPTFVWKHDAASTDITDPDFVDRRRAS 77
V RYS+F ++ + L A + V +LPP KK + P FV++RR
Sbjct: 33 VKHRYSDFAELHDKLVAEH-KVDKDLLPP---KK--LIGNKS--------PSFVEKRRKE 78
Query: 78 LEV 80
LE+
Sbjct: 79 LEI 81
>gnl|CDD|132791 cd06881, PX_SNX15_like, The phosphoinositide binding Phox
Homology domain of Sorting Nexin 15-like proteins. The
PX domain is a phosphoinositide (PI) binding module
present in many proteins with diverse functions such as
cell signaling, vesicular trafficking, protein sorting,
and lipid modification, among others. Members of this
subfamily have similarity to sorting nexin 15 (SNX15),
which contains an N-terminal PX domain and a C-terminal
Microtubule Interacting and Trafficking (MIT) domain.
SNXs make up the largest group among PX domain
containing proteins. They are involved in regulating
membrane traffic and protein sorting in the endosomal
system. The PX domain of SNXs binds PIs and targets the
protein to PI-enriched membranes. SNX15 plays a role in
protein trafficking processes in the endocytic pathway
and the trans-Golgi network. The PX domain of SNX15
interacts with the PDGF receptor and is responsible for
the membrane association of the protein. Other members
of this subfamily contain an additional C-terminal
kinase domain, similar to human RPK118, which binds
sphingosine kinase and the antioxidant peroxiredoxin-3
(PRDX3). RPK118 may be involved in the transport of
proteins such as PRDX3 from the cytoplasm to its site
of function in the mitochondria.
Length = 117
Score = 28.4 bits (64), Expect = 0.21
Identities = 21/69 (30%), Positives = 37/69 (53%), Gaps = 13/69 (18%)
Query: 19 SIVWRRYSEFEQMKNYLQATYPYVIL----PPLPEKKPTFVWKHDAASTDITDPDFVDRR 74
+VW+RYS+F+++ L + + L PP P K + + DAA + +RR
Sbjct: 38 VVVWKRYSDFKKLHRELSRLHKQLYLSGSFPPFP--KGKYFGRFDAAVIE-------ERR 88
Query: 75 RASLEVIDY 83
+A LE++D+
Sbjct: 89 QAILELLDF 97
>gnl|CDD|114360 pfam05632, DUF792, Borrelia burgdorferi protein of unknown function
(DUF792). This family consists of several hypothetical
proteins from the Lyme disease spirochete Borrelia
burgdorferi.
Length = 213
Score = 28.5 bits (63), Expect = 0.33
Identities = 18/54 (33%), Positives = 26/54 (48%), Gaps = 8/54 (14%)
Query: 29 EQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDIT--DPDFVDRRRASLEV 80
EQ+ N +QA P+ I PTF K A T+++ D F+D SL +
Sbjct: 153 EQLANRIQAQVPFSIY------SPTFGLKELAIITNLSFKDIPFIDEVEVSLSI 200
>gnl|CDD|132822 cd07289, PX_PI3K_C2_alpha, The phosphoinositide binding Phox
Homology Domain of the Alpha Isoform of Class II
Phosphoinositide 3-Kinases. The PX domain is a
phosphoinositide (PI) binding module present in many
proteins with diverse functions. The Phosphoinositide
3-Kinase (PI3K) family of enzymes catalyzes the
phosphorylation of the 3-hydroxyl group of the inositol
ring of phosphatidylinositol. PI3Ks play an important
role in a variety of fundamental cellular processes,
including cell motility, the Ras pathway, vesicle
trafficking and secretion, immune cell activation and
apoptosis. PI3Ks are divided into three main classes
(I, II, and III) based on their substrate specificity,
regulation, and domain structure. Class II PI3Ks
preferentially use PI as a substrate to produce PI3P,
but can also phosphorylate PI4P to produce PI(3,4)P2.
They function as monomers and do not associate with any
regulatory subunits. Class II enzymes contain an
N-terminal Ras binding domain, a lipid binding C2
domain, a PI3K homology domain of unknown function, an
ATP-binding cataytic domain, a PX domain, and a second
C2 domain at the C-terminus. The class II alpha
isoform, PI3K-C2alpha, plays key roles in clathrin
assembly and clathrin-mediated membrane trafficking,
insulin signaling, vascular smooth muscle contraction,
and the priming of neurosecretory granule exocytosis.
The PX domain is involved in targeting of proteins to
PI-enriched membranes, and may also be involved in
protein-protein interaction.
Length = 109
Score = 27.6 bits (61), Expect = 0.47
Identities = 13/36 (36%), Positives = 20/36 (55%)
Query: 15 QNKLSIVWRRYSEFEQMKNYLQATYPYVILPPLPEK 50
Q + S V+R + EF+++ N L +P LP P K
Sbjct: 28 QIEPSFVFRTFDEFQELHNKLSILFPLWKLPGFPNK 63
>gnl|CDD|132781 cd06871, PX_MONaKA, The phosphoinositide binding Phox Homology
domain of Modulator of Na,K-ATPase. The PX domain is a
phosphoinositide (PI) binding module present in many
proteins with diverse functions such as cell signaling,
vesicular trafficking, protein sorting, and lipid
modification, among others. MONaKA (Modulator of
Na,K-ATPase) binds the plasma membrane ion transporter,
Na,K-ATPase, and modulates its enzymatic and ion pump
activities. It modulates brain Na,K-ATPase and may be
involved in regulating electrical excitability and
synaptic transmission. MONaKA contains an N-terminal PX
domain and a C-terminal catalytic kinase domain. The PX
domain interacts with PIs and plays a role in targeting
proteins to PI-enriched membranes.
Length = 120
Score = 27.3 bits (61), Expect = 0.53
Identities = 13/31 (41%), Positives = 18/31 (58%), Gaps = 3/31 (9%)
Query: 21 VWRRYSEFEQMKNYLQATYPYVILPPLPEKK 51
V RRY++F+ + LQ + I PLP KK
Sbjct: 40 VIRRYNDFDLLNASLQISG---ISLPLPPKK 67
>gnl|CDD|132809 cd07276, PX_SNX16, The phosphoinositide binding Phox Homology
domain of Sorting Nexin 16. The PX domain is a
phosphoinositide (PI) binding module present in many
proteins with diverse functions. Sorting nexins (SNXs)
make up the largest group among PX domain containing
proteins. They are involved in regulating membrane
traffic and protein sorting in the endosomal system.
The PX domain of SNXs binds PIs and targets the protein
to PI-enriched membranes. SNXs differ from each other
in PI-binding specificity and affinity, and the
presence of other protein-protein interaction domains,
which help determine subcellular localization and
specific function in the endocytic pathway. SNX16
contains a central PX domain followed by a coiled-coil
region. SNX16 is localized in early and recycling
endosomes through the binding of its PX domain to
phosphatidylinositol-3-phosphate (PI3P). It plays a
role in epidermal growth factor (EGF) signaling by
regulating EGF receptor membrane trafficking.
Length = 110
Score = 27.0 bits (60), Expect = 0.84
Identities = 19/60 (31%), Positives = 32/60 (53%), Gaps = 10/60 (16%)
Query: 20 IVWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDITDPDFVDRRRASLE 79
V+RRY++F ++ + L+ +P L LP K+ W D DPDF++ R+ L+
Sbjct: 36 FVFRRYTDFVRLNDKLKQMFPGFRL-SLPPKR----WFKDN-----FDPDFLEERQLGLQ 85
>gnl|CDD|225459 COG2907, COG2907, Predicted NAD/FAD-binding protein [General
function prediction only].
Length = 447
Score = 27.1 bits (60), Expect = 1.1
Identities = 15/68 (22%), Positives = 22/68 (32%), Gaps = 3/68 (4%)
Query: 8 DWSLIPKQNKLSIVWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDITD 67
D SL+P++ + W + TY L L + FV + D
Sbjct: 304 DASLMPRRLRAWASWNYLGTVQWELCQGSLTYWMNRLQALISVRDYFV---TLNNRPWVD 360
Query: 68 PDFVDRRR 75
P V R
Sbjct: 361 PAHVIAER 368
>gnl|CDD|132796 cd06886, PX_SNX27, The phosphoinositide binding Phox Homology
domain of Sorting Nexin 27. The PX domain is a
phosphoinositide (PI) binding module present in many
proteins with diverse functions. Sorting nexins (SNXs)
make up the largest group among PX domain containing
proteins. They are involved in regulating membrane
traffic and protein sorting in the endosomal system.
The PX domain of SNXs binds PIs and targets the protein
to PI-enriched membranes. SNXs differ from each other
in PI-binding specificity and affinity, and the
presence of other protein-protein interaction domains,
which help determine subcellular localization and
specific function in the endocytic pathway. SNX27
contains an N-terminal PDZ domain followed by a PX
domain and a Ras-Associated (RA) domain. It binds G
protein-gated potassium (Kir3) channels, which play a
role in neuronal excitability control, through its PDZ
domain. SNX27 downregulates Kir3 channels by promoting
their movement in the endosome, reducing surface
expression and increasing degradation. SNX27 also
associates with 5-hydroxytryptamine type 4 receptor
(5-HT4R), cytohesin associated scaffolding protein
(CASP), and diacylglycerol kinase zeta, and may play a
role in their intracellular trafficking and endocytic
recycling. The SNX27 PX domain preferentially binds to
phosphatidylinositol-3-phosphate (PI3P) and is
important for targeting to the early endosome.
Length = 106
Score = 26.2 bits (58), Expect = 1.4
Identities = 17/57 (29%), Positives = 23/57 (40%), Gaps = 11/57 (19%)
Query: 23 RRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHDAASTDITDPDFVDRRRASLE 79
RRY EF + L+ +P P LP K P + + +D RR LE
Sbjct: 36 RRYREFANLHQNLKKEFPDFQFPKLPGKWPFSLSEQQ-----------LDARRRGLE 81
>gnl|CDD|132801 cd06891, PX_Vps17p, The phosphoinositide binding Phox Homology
domain of yeast sorting nexin Vps17p. The PX domain is
a phosphoinositide (PI) binding module present in many
proteins with diverse functions. Sorting nexins (SNXs)
make up the largest group among PX domain containing
proteins. They are involved in regulating membrane
traffic and protein sorting in the endosomal system.
The PX domain of SNXs binds PIs and targets the protein
to PI-enriched membranes. SNXs differ from each other
in PI-binding specificity and affinity, and the
presence of other protein-protein interaction domains,
which help determine subcellular localization and
specific function in the endocytic pathway. Vsp17p
forms a dimer with Vps5p, the yeast counterpart of
human SNX1, and is part of the retromer complex that
mediates the transport of the carboxypeptidase Y
receptor Vps10p from endosomes to Golgi. Similar to
Vps5p and SNX1, Vps17p harbors a Bin/Amphiphysin/Rvs
(BAR) domain, which detects membrane curvature,
C-terminal to the PX domain. The PX-BAR structural unit
helps determine specific membrane localization.
Length = 140
Score = 26.2 bits (58), Expect = 2.0
Identities = 11/29 (37%), Positives = 15/29 (51%)
Query: 21 VWRRYSEFEQMKNYLQATYPYVILPPLPE 49
V R Y EF+++ YL P +P LP
Sbjct: 66 VRRTYEEFQKLFKYLNGANPETFVPALPL 94
>gnl|CDD|132821 cd07288, PX_SNX15, The phosphoinositide binding Phox Homology
domain of Sorting Nexin 15. The PX domain is a
phosphoinositide (PI) binding module present in many
proteins with diverse functions. Sorting nexins (SNXs)
make up the largest group among PX domain containing
proteins. They are involved in regulating membrane
traffic and protein sorting in the endosomal system.
The PX domain of SNXs binds PIs and targets the protein
to PI-enriched membranes. SNXs differ from each other
in PI-binding specificity and affinity, and the
presence of other protein-protein interaction domains,
which help determine subcellular localization and
specific function in the endocytic pathway. SNX15
contains an N-terminal PX domain and a C-terminal
Microtubule Interacting and Trafficking (MIT) domain.
It plays a role in protein trafficking processes in the
endocytic pathway and the trans-Golgi network. The PX
domain of SNX15 interacts with the PDGF receptor and is
responsible for the membrane association of the
protein.
Length = 118
Score = 25.7 bits (56), Expect = 2.2
Identities = 12/41 (29%), Positives = 21/41 (51%), Gaps = 5/41 (12%)
Query: 13 PKQNKLSIVWRRYSEFEQMKNYLQATYPYVI-----LPPLP 48
P+ K +VW+RYS+ +++ L T+ + PP P
Sbjct: 32 PEDVKEVVVWKRYSDLKKLHGELAYTHRNLFRRQEEFPPFP 72
>gnl|CDD|163613 cd00144, MPP_PPP_family, phosphoprotein phosphatases of the
metallophosphatase superfamily, metallophosphatase
domain. The PPP (phosphoprotein phosphatase) family is
one of two known protein phosphatase families specific
for serine and threonine. This family includes: PP1,
PP2A, PP2B (calcineurin), PP4, PP5, PP6, PP7, Bsu1,
RdgC, PrpE, PrpA/PrpB, and ApA4 hydrolase. The PPP
catalytic domain is defined by three conserved motifs
(-GDXHG-, -GDXVDRG- and -GNHE-). The PPP enzyme family
is ancient with members found in all eukaryotes, and in
most bacterial and archeal genomes. Dephosphorylation
of phosphoserines and phosphothreonines on target
proteins plays a central role in the regulation of many
cellular processes. PPPs belong to the
metallophosphatase (MPP) superfamily. MPPs are
functionally diverse, but all share a conserved domain
with an active site consisting of two metal ions
(usually manganese, iron, or zinc) coordinated with
octahedral geometry by a cage of histidine, aspartate,
and asparagine residues. The MPP superfamily includes:
Mre11/SbcD-like exonucleases, Dbr1-like RNA lariat
debranching enzymes, YfcE-like phosphodiesterases,
purple acid phosphatases (PAPs), YbbF-like
UDP-2,3-diacylglucosamine hydrolases, and acid
sphingomyelinases (ASMases). The conserved domain is a
double beta-sheet sandwich with a di-metal active site
made up of residues located at the C-terminal side of
the sheets. This domain is thought to allow for
productive metal coordination.
Length = 225
Score = 25.9 bits (57), Expect = 2.2
Identities = 9/15 (60%), Positives = 11/15 (73%)
Query: 69 DFVDRRRASLEVIDY 83
D+VDR S+EVID
Sbjct: 33 DYVDRGPDSVEVIDL 47
>gnl|CDD|132834 cd07301, PX_SNX21, The phosphoinositide binding Phox Homology
domain of Sorting Nexin 21. The PX domain is a
phosphoinositide (PI) binding module present in many
proteins with diverse functions. Sorting nexins (SNXs)
make up the largest group among PX domain containing
proteins. They are involved in regulating membrane
traffic and protein sorting in the endosomal system.
The PX domain of SNXs binds PIs and targets the protein
to PI-enriched membranes. SNXs differ from each other
in PI-binding specificity and affinity, and the
presence of other protein-protein interaction domains,
which help determine subcellular localization and
specific function in the endocytic pathway. Some SNXs
are localized in early endosome structures such as
clathrin-coated pits, while others are located in late
structures of the endocytic pathway. SNX21, also called
SNX-L, is distinctly and highly-expressed in fetal
liver and may be involved in protein sorting and
degradation during embryonic liver development.
Length = 112
Score = 25.5 bits (56), Expect = 2.7
Identities = 7/18 (38%), Positives = 12/18 (66%)
Query: 23 RRYSEFEQMKNYLQATYP 40
RRYS+FE++ L+ +
Sbjct: 40 RRYSDFERLHRRLRRLFG 57
>gnl|CDD|132823 cd07290, PX_PI3K_C2_beta, The phosphoinositide binding Phox
Homology Domain of the Beta Isoform of Class II
Phosphoinositide 3-Kinases. The PX domain is a
phosphoinositide (PI) binding module present in many
proteins with diverse functions. The Phosphoinositide
3-Kinase (PI3K) family of enzymes catalyzes the
phosphorylation of the 3-hydroxyl group of the inositol
ring of phosphatidylinositol. PI3Ks play an important
role in a variety of fundamental cellular processes,
including cell motility, the Ras pathway, vesicle
trafficking and secretion, immune cell activation and
apoptosis. PI3Ks are divided into three main classes
(I, II, and III) based on their substrate specificity,
regulation, and domain structure. Class II PI3Ks
preferentially use PI as a substrate to produce PI3P,
but can also phosphorylate PI4P to produce PI(3,4)P2.
They function as monomers and do not associate with any
regulatory subunits. Class II enzymes contain an
N-terminal Ras binding domain, a lipid binding C2
domain, a PI3K homology domain of unknown function, an
ATP-binding cataytic domain, a PX domain, and a second
C2 domain at the C-terminus. The class II beta isoform,
PI3K-C2beta, contributes to the migration and survival
of cancer cells. It regulates Rac activity and impacts
membrane ruffling, cell motility, and cadherin-mediated
cell-cell adhesion. The PX domain is involved in
targeting of proteins to PI-enriched membranes, and may
also be involved in protein-protein interaction.
Length = 109
Score = 25.3 bits (55), Expect = 3.0
Identities = 10/30 (33%), Positives = 17/30 (56%)
Query: 21 VWRRYSEFEQMKNYLQATYPYVILPPLPEK 50
V R + EF+++ N L+ +P LP P +
Sbjct: 34 VQRTFEEFQELHNKLRLLFPSSKLPSFPSR 63
>gnl|CDD|132792 cd06882, PX_p40phox, The phosphoinositide binding Phox Homology
domain of the p40phox subunit of NADPH oxidase. The PX
domain is a phosphoinositide binding module present in
many proteins with diverse functions such as cell
signaling, vesicular trafficking, protein sorting, and
lipid modification, among others. p40phox contains an
N-terminal PX domain, a central SH3 domain that binds
p47phox, and a C-terminal PB1 domain that interacts
with p67phox. It is a cytosolic subunit of the
phagocytic NADPH oxidase complex (also called Nox2 or
gp91phox) which plays a crucial role in the cellular
response to bacterial infection. NADPH oxidase
catalyzes the transfer of electrons from NADPH to
oxygen during phagocytosis forming superoxide and
reactive oxygen species. p40phox positively regulates
NADPH oxidase in both phosphatidylinositol-3-phosphate
(PI3P)-dependent and PI3P-independent manner. The PX
domain is a phospholipid-binding module involved in the
membrane targeting of proteins. The p40phox PX domain
binds to PI3P, an abundant lipid in phagosomal
membranes, playing an important role in the
localization of NADPH oxidase. The PX domain of p40phox
is also involved in protein-protein interaction.
Length = 123
Score = 25.1 bits (55), Expect = 4.3
Identities = 10/39 (25%), Positives = 19/39 (48%), Gaps = 8/39 (20%)
Query: 20 IVWRRYSEFEQMKNYLQATYPY--------VILPPLPEK 50
+++RRY +F +++ L+ + LP LP K
Sbjct: 36 LIYRRYRQFFALQSKLEERFGPEAGSSAYDCTLPTLPGK 74
>gnl|CDD|107306 cd06311, PBP1_ABC_sugar_binding_like_3, Periplasmic sugar-binding
domain of uncharacterized ABC-type transport systems.
Periplasmic sugar-binding domain of uncharacterized
ABC-type transport systems that share homology with a
family of pentose/hexose sugar-binding proteins of the
type I periplasmic binding protein superfamily, which
consists of two domains connected by a three-stranded
hinge. The substrate specificity of this group is not
known, but it is predicted to be involved in the
transport of sugar-containing molecules and chemotaxis.
Length = 274
Score = 25.0 bits (55), Expect = 4.4
Identities = 11/38 (28%), Positives = 14/38 (36%), Gaps = 11/38 (28%)
Query: 22 WRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVWKHD 59
W R F M++ L +P K VW HD
Sbjct: 167 WNRDDAFSVMQDLLTK-FP----------KIDAVWAHD 193
>gnl|CDD|130335 TIGR01268, Phe4hydrox_tetr, phenylalanine-4-hydroxylase, tetrameric
form. This model describes the larger, tetrameric form
of phenylalanine-4-hydroxylase, as found in metazoans.
The enzyme irreversibly converts phenylalanine to
tryosine and is known to be the rate-limiting step in
phenylalanine catabolism in some systems. It is closely
related to metazoan tyrosine 3-monooxygenase and
tryptophan 5-monoxygenase, and more distantly to
monomeric phenylalanine-4-hydroxylases of some
Gram-negative bacteria. The member of this family from
Drosophila has been described as having both
phenylalanine-4-hydroxylase and tryptophan
5-monoxygenase activity (PMID:1371286). However, a
Drosophila member of the tryptophan 5-monoxygenase clade
has subsequently been discovered.
Length = 436
Score = 25.2 bits (55), Expect = 5.6
Identities = 11/34 (32%), Positives = 17/34 (50%), Gaps = 2/34 (5%)
Query: 2 CLVTDEDWSLIPKQNKLSIVW--RRYSEFEQMKN 33
VT S KQNK S+ W R+ ++ ++ N
Sbjct: 84 AEVTVNILSRDNKQNKDSVPWFPRKINDIDRFAN 117
>gnl|CDD|132799 cd06889, PX_NoxO1, The phosphoinositide binding Phox Homology
domain of Nox Organizing protein 1. The PX domain is a
phosphoinositide (PI) binding module present in many
proteins with diverse functions such as cell signaling,
vesicular trafficking, protein sorting, and lipid
modification, among others. Nox Organizing protein 1
(NoxO1) is a critical regulator of enzyme kinetics of
the nonphagocytic NADPH oxidase Nox1, which catalyzes
the transfer of electrons from NADPH to molecular
oxygen to form superoxide. Nox1 is expressed in colon,
stomach, uterus, prostate, and vascular smooth muscle
cells. NoxO1, a homolog of the p47phox subunit of
phagocytic NADPH oxidase, is involved in targeting
activator subunits (such as NoxA1) to Nox1. It is
co-localized with Nox1 in the membranes of resting
cells and directs the subcellular localization of Nox1.
The PX domain is involved in targeting of proteins to
PI-enriched membranes, and may also be involved in
protein-protein interaction. The PX domain of NoxO1
preferentially binds
phosphatidylinositol-3,5-bisphosphate [PI(3,5)P2],
PI5P, and PI4P.
Length = 121
Score = 24.7 bits (54), Expect = 5.7
Identities = 11/60 (18%), Positives = 21/60 (35%), Gaps = 15/60 (25%)
Query: 9 WSLIPKQNKLSIVWRRYSEFEQMKNYLQATYPY---------VILPPLPEK--KPTFVWK 57
WS ++L V+R EF ++ L+ +P +LP + +
Sbjct: 28 WS---DGSEL-FVYRSLEEFRKLHKQLKEKFPVEAGLLRSSDRVLPKFKDAPSLGSLKGS 83
>gnl|CDD|132798 cd06888, PX_FISH, The phosphoinositide binding Phox Homology
domain of Five SH protein. The PX domain is a
phosphoinositide (PI) binding module present in many
proteins with diverse functions such as cell signaling,
vesicular trafficking, protein sorting, and lipid
modification, among others. Five SH (FISH), also called
Tks5, is a scaffolding protein and Src substrate that
is localized in podosomes, which are electron-dense
structures found in Src-transformed fibroblasts,
osteoclasts, macrophages, and some invasive cancer
cells. FISH contains an N-terminal PX domain and five
Src homology 3 (SH3) domains. FISH binds and regulates
some members of the ADAMs family of transmembrane
metalloproteases, which function as sheddases and
mediators of cell and matrix interactions. It is
required for podosome formation, degradation of the
extracellular matrix, and cancer cell invasion. This
subfamily also includes proteins with a different
number of SH3 domains than FISH, such as Tks4, which
contains four SH3 domains instead of five. The Tks4
adaptor protein is required for the formation of
functional podosomes. It has overlapping, but not
identical, functions as FISH. The PX domain is involved
in targeting of proteins to PI-enriched membranes, and
may also be involved in protein-protein interaction.
Length = 119
Score = 24.3 bits (53), Expect = 7.0
Identities = 12/41 (29%), Positives = 20/41 (48%), Gaps = 9/41 (21%)
Query: 20 IVWRRYSEFEQMKNYLQATYPYV---------ILPPLPEKK 51
+++RRYS+F ++ L +P I+P LP K
Sbjct: 34 VIYRRYSKFFDLQMQLLDKFPIEGGQKDPSQRIIPFLPGKI 74
>gnl|CDD|132789 cd06879, PX_UP1_plant, The phosphoinositide binding Phox Homology
domain of uncharacterized plant proteins. The PX
domain is a phosphoinositide (PI) binding module
involved in targeting proteins to PI-enriched
membranes. Members in this subfamily are
uncharacterized fungal proteins containing a PX domain.
PX domain harboring proteins have been implicated in
highly diverse functions such as cell signaling,
vesicular trafficking, protein sorting, lipid
modification, cell polarity and division, activation of
T and B cells, and cell survival. In addition to
protein-lipid interaction, the PX domain may also be
involved in protein-protein interaction.
Length = 138
Score = 24.2 bits (52), Expect = 7.8
Identities = 10/30 (33%), Positives = 17/30 (56%)
Query: 21 VWRRYSEFEQMKNYLQATYPYVILPPLPEK 50
V RR+++F ++ L+ +P LP P K
Sbjct: 65 VLRRFNDFLKLHTDLKKLFPKKKLPAAPPK 94
>gnl|CDD|212087 cd11518, SLC6sbd_SIT1, Na(+)- and Cl(-)-dependent imino acid
transporter SIT1; solute-binding domain. SIT1 (also
called XTRP3, XT3, IMINO) transports imino acids, such
as proline, pipecolate, MeAIB, and sarcosine. It has
weak affinity for neutral amino acids such as
phenylalanine. Human SIT1 is encoded by the SLC6A20
gene. SIT1 is expressed in brain, kidney, small
intestine, thymus, spleen, ovary, and lung. SLC6A20 is a
candidate gene for the rare disorder iminoglycinuria.
This subgroup belongs to the solute carrier 6 (SLC6)
transporter family.
Length = 576
Score = 24.4 bits (53), Expect = 7.9
Identities = 9/15 (60%), Positives = 9/15 (60%)
Query: 26 SEFEQMKNYLQATYP 40
S E MK YL A YP
Sbjct: 330 SNLEDMKKYLNAAYP 344
>gnl|CDD|187804 cd09673, Cas3_Cas2_I-F, CRISPR/Cas system-associated protein
Cas3/Cas2. CRISPR (Clustered Regularly Interspaced Short
Palindromic Repeats) and associated Cas proteins comprise
a system for heritable host defense by prokaryotic cells
against phage and other foreign DNA; Cas3/Cas2 fusion;
This protein includes both DEAH and HD motifs for
helicase and N-terminal domain corresponding to Cas2
RNAse; signature gene for Type I and subtype I-F.
Length = 1106
Score = 24.4 bits (53), Expect = 8.6
Identities = 8/43 (18%), Positives = 14/43 (32%), Gaps = 2/43 (4%)
Query: 14 KQNKLSIVWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVW 56
K L+ R + F + Q Y + + K F +
Sbjct: 984 KAAILTANLYRITPFRESNY--QEEYMFELAESDEVDKQVFGF 1024
>gnl|CDD|233928 TIGR02562, cas3_yersinia, CRISPR-associated helicase Cas3, subtype
I-F/YPEST. The helicase in many CRISPR-associated (cas)
gene clusters is designated Cas3, and most Cas3 proteins
are described by model TIGR01587. Members of this family
are considerably larger, show a number of motifs in
common with TIGR01587 sequences, and replace Cas3 in some
CRISPR/cas loci in a number of Proteobacteria, including
Yersinia pestis, Chromobacterium violaceum, Erwinia
carotovora subsp. atroseptica SCRI1043, Photorhabdus
luminescens subsp. laumondii TTO1, Legionella
pneumophila, etc [Mobile and extrachromosomal element
functions, Other].
Length = 1110
Score = 24.4 bits (53), Expect = 8.8
Identities = 8/43 (18%), Positives = 14/43 (32%), Gaps = 2/43 (4%)
Query: 14 KQNKLSIVWRRYSEFEQMKNYLQATYPYVILPPLPEKKPTFVW 56
K L+ R + F + Q Y + + K F +
Sbjct: 988 KAAILTANLYRITPFRESNY--QEEYMFELAESDEVDKQVFGF 1028
>gnl|CDD|233208 TIGR00956, 3a01205, Pleiotropic Drug Resistance (PDR) Family protein.
[Transport and binding proteins, Other].
Length = 1394
Score = 24.3 bits (53), Expect = 9.3
Identities = 8/16 (50%), Positives = 11/16 (68%)
Query: 21 VWRRYSEFEQMKNYLQ 36
VWR SE++ +KN L
Sbjct: 1036 VWRNSSEYQAVKNELD 1051
Database: CDD.v3.10
Posted date: Mar 20, 2013 7:55 AM
Number of letters in database: 10,937,602
Number of sequences in database: 44,354
Lambda K H
0.320 0.136 0.436
Gapped
Lambda K H
0.267 0.0713 0.140
Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Sequences: 44354
Number of Hits to DB: 4,429,484
Number of extensions: 347026
Number of successful extensions: 417
Number of sequences better than 10.0: 1
Number of HSP's gapped: 404
Number of HSP's successfully gapped: 69
Length of query: 83
Length of database: 10,937,602
Length adjustment: 52
Effective length of query: 31
Effective length of database: 8,631,194
Effective search space: 267567014
Effective search space used: 267567014
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 16 ( 7.4 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 41 (21.8 bits)
S2: 53 (24.2 bits)