RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy9741
(199 letters)
>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 = 138 bits (350), Expect = 2e-42
Identities = 55/108 (50%), Positives = 78/108 (72%)
Query: 44 ITSYEIKDKIALYKITVQVGEVCWSLSHRYSDFVELNDKLVKDHSLNKDLLPPKKVLRNL 103
I S E + +Y I V+VG V W++ HRYSDF EL+DKLV +H ++KDLLPPKK++ N
Sbjct: 8 IPSAETVEGYTVYIIEVKVGSVEWTVKHRYSDFAELHDKLVAEHKVDKDLLPPKKLIGNK 67
Query: 104 DPTFLEKRKTDLEIYLQNVVNFLEKSLPRCLIDFLHLVKYDINILLQD 151
P+F+EKR+ +LEIYLQ +++F +K++PR L FL KY+I L Q+
Sbjct: 68 SPSFVEKRRKELEIYLQTLLSFFQKTMPRELAHFLDFHKYEIIGLTQN 115
>gnl|CDD|216119 pfam00787, PX, PX domain. PX domains bind to phosphoinositides.
Length = 109
Score = 75.8 bits (187), Expect = 3e-18
Identities = 31/86 (36%), Positives = 47/86 (54%), Gaps = 1/86 (1%)
Query: 55 LYKITVQVGEVCWSLSHRYSDFVELNDKLVKDHSLNKD-LLPPKKVLRNLDPTFLEKRKT 113
LY++T + WS+ RYSDF EL+ +L++ LPPKK+ F+EKR+
Sbjct: 22 LYEVTTKTNLKEWSVKRRYSDFEELHKQLLRKFPGRIIPPLPPKKLFGRFSEEFIEKRRK 81
Query: 114 DLEIYLQNVVNFLEKSLPRCLIDFLH 139
LE YLQ ++ E S +++FL
Sbjct: 82 GLEEYLQRLLQHPELSNSEVVLEFLE 107
>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 = 74.7 bits (184), Expect = 9e-18
Identities = 39/104 (37%), Positives = 54/104 (51%), Gaps = 2/104 (1%)
Query: 39 KINTHITSYEIKDKIALYKITVQVGEVC-WSLSHRYSDFVELNDKLVKDHSLNKDL-LPP 96
I + + K +Y I V W++ RYSDF EL++KL K LPP
Sbjct: 3 SIPDYEKVKDGGKKYVVYIIEVTTQGGEEWTVYRRYSDFEELHEKLKKKFPGVILPPLPP 62
Query: 97 KKVLRNLDPTFLEKRKTDLEIYLQNVVNFLEKSLPRCLIDFLHL 140
KK+ NLDP F+E+R+ LE YLQ+++N E L +FL L
Sbjct: 63 KKLFGNLDPEFIEERRKQLEQYLQSLLNHPELRNSEELKEFLEL 106
>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 = 69.4 bits (170), Expect = 1e-15
Identities = 36/108 (33%), Positives = 58/108 (53%), Gaps = 9/108 (8%)
Query: 40 INTHITSYEI---KDKIALYKITVQ-VGEVCWSLSHRYSDFVELNDKLVKDHSLNKDLLP 95
I I YE+ + + +YKI V+ W + RY+DFV LNDKL + + LP
Sbjct: 4 IRPPILGYEVMEERARFTVYKIRVENKVGDSWFVFRRYTDFVRLNDKLKQMFPGFRLSLP 63
Query: 96 PKKVLR-NLDPTFLEKRKTDLEIYLQNVVNFLEKSLPRCLI--DFLHL 140
PK+ + N DP FLE+R+ L+ ++ N++ K + +C + +F L
Sbjct: 64 PKRWFKDNFDPDFLEERQLGLQAFVNNIMA--HKDIAKCKLVREFFCL 109
>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 = 65.8 bits (161), Expect = 2e-14
Identities = 33/97 (34%), Positives = 51/97 (52%), Gaps = 5/97 (5%)
Query: 48 EIKDKIALYKITVQVGEVCWSLSHRYSDFVELNDKLVKDHSLNK-DLLPPKKVL---RNL 103
+ K + +I + G W++S RYSDF+EL+ KL K + LP KK+ N
Sbjct: 9 DGKHYYYVIEIETKTGLEEWTVSRRYSDFLELHSKLKKHFPRSILPPLPGKKLFGRLNNF 68
Query: 104 DPTFLEKRKTDLEIYLQNVVNFLEKSLP-RCLIDFLH 139
F+EKR+ LE YLQ+++N E +++FL
Sbjct: 69 SEEFIEKRRRGLEKYLQSLLNHPELINHSEVVLEFLE 105
>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 = 65.0 bits (159), Expect = 7e-14
Identities = 37/95 (38%), Positives = 53/95 (55%), Gaps = 10/95 (10%)
Query: 54 ALYKITV-----QVGEVCWSLSHRYSDFVELNDKLV-KDHSLNKDLLPPKKVLRNLDPTF 107
A+Y I+V E W + RYSDF +L+ +L K +L+K P KK NLD F
Sbjct: 23 AVYAISVTRIYPNGQEESWHVYRRYSDFHDLHMRLKEKFPNLSKLSFPGKKTFNNLDRAF 82
Query: 108 LEKRKTDLEIYLQNVVN--FLEKS--LPRCLIDFL 138
LEKR+ L YLQ+++N L+ + L ++DFL
Sbjct: 83 LEKRRKMLNQYLQSLLNPEVLDANPGLQEIVLDFL 117
>gnl|CDD|132790 cd06880, PX_SNX22, The phosphoinositide binding Phox Homology
domain of Sorting Nexin 22. 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. SNX22 may be involved in
recruiting other proteins to the membrane via
protein-protein and protein-ligand interaction. The
biological function of SNX22 is not yet known.
Length = 110
Score = 60.4 bits (147), Expect = 3e-12
Identities = 32/88 (36%), Positives = 46/88 (52%), Gaps = 5/88 (5%)
Query: 55 LYKITVQVGEVCWSLSHRYSDFVELNDKLVKDHSLNKDLLPPKKVLRNLDPTFLEKRKTD 114
++ I V V ++ RYS+F L+ KL K PPK+V RN +P LE+R+
Sbjct: 21 VFTIEVLVNGRRHTVEKRYSEFHALHKKLKKSIKTPD--FPPKRV-RNWNPKVLEQRRQG 77
Query: 115 LEIYLQNVVNFLEKSLPRCLIDFLHLVK 142
LE YLQ + LP+ L+DFL +
Sbjct: 78 LEAYLQGL--LKINELPKQLLDFLGVRH 103
>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 = 58.5 bits (142), Expect = 1e-11
Identities = 29/84 (34%), Positives = 42/84 (50%), Gaps = 7/84 (8%)
Query: 43 HITSYEIKDKIALYKITVQVG---EVCWSLSHRYSDFVELNDKL-VKDHSLNKDLLPPKK 98
I + + Y I VQ G E W + RY+DF LN L + SL LPPKK
Sbjct: 11 VIEASQNIQSHTEYIIRVQRGPSPENSWQVIRRYNDFDLLNASLQISGISL---PLPPKK 67
Query: 99 VLRNLDPTFLEKRKTDLEIYLQNV 122
++ N+D F+ +R+ L+ YL +
Sbjct: 68 LIGNMDREFIAERQQGLQNYLNVI 91
>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 = 53.9 bits (130), Expect = 1e-09
Identities = 27/73 (36%), Positives = 47/73 (64%), Gaps = 1/73 (1%)
Query: 55 LYKITVQVGEVCWSLSHRYSDFVELNDKLVKDHSLNKDL-LPPKKVLRNLDPTFLEKRKT 113
+Y++ +++ + W++ RYS+F EL+ KL K + + PPKK + N D F+E+R+
Sbjct: 20 VYQVYIRIRDDEWNVYRRYSEFYELHKKLKKKFPVVRSFDFPPKKAIGNKDAKFVEERRK 79
Query: 114 DLEIYLQNVVNFL 126
L++YL+ VVN L
Sbjct: 80 RLQVYLRRVVNTL 92
>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 = 51.5 bits (124), Expect = 5e-09
Identities = 24/86 (27%), Positives = 46/86 (53%), Gaps = 4/86 (4%)
Query: 43 HITSYEIKDK-IALYKITVQVGEVCWSLSHRYSDFVELNDKLVKDHSLNKDL-LPPKKVL 100
I + + K +Y I V++ +++S RYS+FV L+ +L + + LPPK
Sbjct: 4 SIPTTSVSPKPYTVYNIQVRLPLRSYTVSRRYSEFVALHKQLESEVGIEPPYPLPPKSWF 63
Query: 101 --RNLDPTFLEKRKTDLEIYLQNVVN 124
+ +P +E+R+ LE +L+ ++N
Sbjct: 64 LSTSSNPKLVEERRVGLEAFLRALLN 89
>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 = 49.3 bits (118), Expect = 3e-08
Identities = 24/77 (31%), Positives = 44/77 (57%), Gaps = 1/77 (1%)
Query: 48 EIKDKIALYKITVQVGEVCWSLSHRYSDFVELNDKLVKDHSLNKDLLPPKKVL-RNLDPT 106
E K + +YK+ V VG W + RY++F +L + L K + +P K++ N DP
Sbjct: 15 EKKKRFTVYKVVVSVGRSSWFVFRRYAEFDKLYESLKKQFPASNLKIPGKRLFGNNFDPD 74
Query: 107 FLEKRKTDLEIYLQNVV 123
F+++R+ L+ ++Q +V
Sbjct: 75 FIKQRRAGLDEFIQRLV 91
>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 = 48.5 bits (116), Expect = 1e-07
Identities = 28/94 (29%), Positives = 46/94 (48%), Gaps = 9/94 (9%)
Query: 39 KINTHITSYEIKDK-IALYKITVQVGE-----VCWSLSHRYSDFVELNDKLVKDHSLNKD 92
I ++I+ E + K +Y I VQ W ++ RYS+F+EL+ L K +
Sbjct: 23 SIQSYISDVEEEGKEFVVYLIEVQRLNNDDQSSGWVVARRYSEFLELHKYLKKRYPGVLK 82
Query: 93 LLPPKKV---LRNLDPTFLEKRKTDLEIYLQNVV 123
L P+K L+ +E+R+ LE YLQ ++
Sbjct: 83 LDFPQKRKISLKYSKTLLVEERRKALEKYLQELL 116
>gnl|CDD|132788 cd06878, PX_SNX25, The phosphoinositide binding Phox Homology
domain of Sorting Nexin 25. 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. The function of SNX25 is not
yet known. It has been found in exosomes from human
malignant pleural effusions. SNX25 shows the same domain
architecture as SNX13 and SNX14, containing 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.
Length = 127
Score = 46.2 bits (110), Expect = 7e-07
Identities = 29/84 (34%), Positives = 43/84 (51%), Gaps = 15/84 (17%)
Query: 53 IALYKITVQVGEV----------CWSLSHRYSDFVELNDKLVKD--HSLNKDLLP--PKK 98
+ LY I V V EV W ++ + S+F +L+ KL K+ L K LP KK
Sbjct: 26 VPLYVIVVHVSEVGLNEDESISSGWVVTRKLSEFHDLHRKL-KECSSWLKKVELPSLSKK 84
Query: 99 VLRNLDPTFLEKRKTDLEIYLQNV 122
+++D FL+K K L+ YLQ +
Sbjct: 85 WFKSIDKKFLDKSKNQLQKYLQFI 108
>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 = 44.9 bits (107), Expect = 1e-06
Identities = 27/79 (34%), Positives = 38/79 (48%), Gaps = 12/79 (15%)
Query: 47 YEIKDKIALYKITVQVGEVCWSLSHRYSDFVELNDKLVKDHSLNK-DLLPPKKVLRNLDP 105
YE+ K +K TV RYSDFV L++ L+K + LPPK++ + D
Sbjct: 21 YEVSSKR--FKSTV---------YRRYSDFVWLHEYLLKRYPYRMVPALPPKRIGGSADR 69
Query: 106 TFLEKRKTDLEIYLQNVVN 124
FLE R+ L +L V
Sbjct: 70 EFLEARRRGLSRFLNLVAR 88
>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 = 45.0 bits (107), Expect = 2e-06
Identities = 25/82 (30%), Positives = 42/82 (51%), Gaps = 11/82 (13%)
Query: 52 KIALYKITVQVGEVCWSLSH---RYSDFVELNDKLVKDHSLNKDL----LPPKKVL---- 100
++KIT++ ++ S RYS+FV+L + L+ + +K LPPK
Sbjct: 21 AYVVWKITIETKDLIGSSIVAYKRYSEFVQLREALLDEFPRHKRNEIPQLPPKVPWYDSR 80
Query: 101 RNLDPTFLEKRKTDLEIYLQNV 122
NL+ +LEKR+ L+ +L V
Sbjct: 81 VNLNKAWLEKRRRGLQYFLNCV 102
>gnl|CDD|132795 cd06885, PX_SNX17_31, The phosphoinositide binding Phox Homology
domain of Sorting Nexins 17 and 31. The PX domain is a
phosphoinositide (PI) binding module present in many
proteins with diverse functions. Members of this
subfamily include sorting nexin 17 (SNX17), SNX31, and
similar proteins. They contain an N-terminal PX domain
followed by a truncated FERM (4.1, ezrin, radixin, and
moesin) domain and a unique C-terminal region. 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. SNX17 is known to regulate the
trafficking and processing of a number of proteins. It
binds some members of the low-density lipoprotein
receptor (LDLR) family such as LDLR, VLDLR, ApoER2, and
others, regulating their endocytosis. It also binds
P-selectin and may regulate its lysosomal degradation.
SNX17 is highly expressed in neurons. It binds amyloid
precursor protein (APP) and may be involved in its
intracellular trafficking and processing to amyloid beta
peptide, which plays a central role in the pathogenesis
of Alzheimer's disease. The biological function of SNX31
is unknown.
Length = 104
Score = 43.5 bits (103), Expect = 4e-06
Identities = 25/53 (47%), Positives = 31/53 (58%), Gaps = 2/53 (3%)
Query: 72 RYSDFVELNDKLVKDHSLNK-DLLPPKKVLRNLDPTFLEKRKTDLEIYLQNVV 123
RYS LN++L K+ K PPKK+L L P LE+R+ LE YLQ VV
Sbjct: 34 RYSQLHGLNEQLKKEFGNRKLPPFPPKKLLP-LTPAQLEERRLQLEKYLQAVV 85
>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 = 43.5 bits (102), Expect = 6e-06
Identities = 30/88 (34%), Positives = 47/88 (53%), Gaps = 18/88 (20%)
Query: 55 LYKITVQVGEVCWSLSH-----RYSDFVELNDKLVKDHSLNKDLL--PPKKVLRNL---- 103
+YK+T Q + + H R+SDF+ L +KL + HS N ++ PP+K L +
Sbjct: 20 VYKVTTQTSLLMFRSKHFTVKRRFSDFLGLYEKLSEKHSQNGFIVPPPPEKSLIGMTKVK 79
Query: 104 ----DPT---FLEKRKTDLEIYLQNVVN 124
D + FLE+R+ LE YLQ +V+
Sbjct: 80 VGKEDSSSAEFLERRRAALERYLQRIVS 107
>gnl|CDD|132787 cd06877, PX_SNX14, The phosphoinositide binding Phox Homology
domain of Sorting Nexin 14. 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. SNX14 may be involved in
recruiting other proteins to the membrane via
protein-protein and protein-ligand interaction. It is
expressed in the embryonic nervous system of mice, and
is co-expressed in the motoneurons and the anterior
pituary with Islet-1. SNX14 shows a similar domain
architecture as SNX13, containing 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.
Length = 119
Score = 42.7 bits (101), Expect = 1e-05
Identities = 18/55 (32%), Positives = 28/55 (50%), Gaps = 1/55 (1%)
Query: 67 WSLSHRYSDFVELNDKLVKDHSLNKDL-LPPKKVLRNLDPTFLEKRKTDLEIYLQ 120
WS+ RY++F L KL + H D LP +++ FLE ++ E +LQ
Sbjct: 44 WSVLRRYNEFYVLESKLTEFHGEFPDAPLPSRRIFGPKSYEFLESKREIFEEFLQ 98
>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 = 42.2 bits (100), Expect = 1e-05
Identities = 20/77 (25%), Positives = 33/77 (42%), Gaps = 9/77 (11%)
Query: 68 SLSHRYSDFVELNDKLVKDHSLNKDL----LPPKKVLRNLDPT--FLEKRKTDLEIYLQN 121
S+ RYSDF+ L ++LV+ + P K+ + F+EKR+ LE +L+
Sbjct: 38 SVLRRYSDFLWLYERLVEKY---PGRIVPPPPEKQAVGRFKVKFEFIEKRRAALERFLRR 94
Query: 122 VVNFLEKSLPRCLIDFL 138
+ FL
Sbjct: 95 IAAHPVLRKDPDFRLFL 111
>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 = 42.0 bits (99), Expect = 2e-05
Identities = 34/115 (29%), Positives = 55/115 (47%), Gaps = 10/115 (8%)
Query: 50 KDKIALYKITVQVGEVCWSLSHRYSDFVELNDKL-VKDHSLNKDLLPPKKVLRNLDPTFL 108
KD+ +++ + V + W++ RYS F EL+ + +K + PPKK+ N
Sbjct: 15 KDEHFEFEVKITVLDETWTVFRRYSRFRELHKTMKLKYPEVAALEFPPKKLFGNKSERVA 74
Query: 109 EKRKTDLEIYLQNVVNFLEKSLPRC-LIDF--LHLVKYDINILLQDFASFCFNEG 160
++R+ LE YL+N + + LP C L L K L DF+ F F +G
Sbjct: 75 KERRRQLETYLRNFFS-VCLKLPACPLYPKVGRTLSKAT----LCDFSPF-FRKG 123
>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 = 41.5 bits (98), Expect = 3e-05
Identities = 23/75 (30%), Positives = 42/75 (56%), Gaps = 7/75 (9%)
Query: 56 YKITVQVGEVCWSLSH-----RYSDFVELNDKLVKDHSLNK-DLLPPKKVLRNL-DPTFL 108
Y+I + +C++L RYS+FV L ++L K+ L + LPPK + + F+
Sbjct: 21 YEIFLHTNSMCFTLKTSCVRRRYSEFVWLRNRLQKNALLIQLPSLPPKNLFGRFNNEGFI 80
Query: 109 EKRKTDLEIYLQNVV 123
E+R+ L+ +L+ V+
Sbjct: 81 EERQQGLQDFLEKVL 95
>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 = 40.0 bits (93), Expect = 1e-04
Identities = 33/104 (31%), Positives = 47/104 (45%), Gaps = 13/104 (12%)
Query: 45 TSYEIKDKIALYKITVQVGEVCWSLSHRYSDFVELNDKLVKDHSLNKDLLPPKKVLRNL- 103
T+YEI+ K L ++ E + RYSDF L +L ++ + LP K + R L
Sbjct: 20 TTYEIRLKTNL--PIFKLKEST--VRRRYSDFEWLRSELERESKVVVPPLPGKALFRQLP 75
Query: 104 --------DPTFLEKRKTDLEIYLQNVVNFLEKSLPRCLIDFLH 139
D +F+E+RK LE +L V RCL FL
Sbjct: 76 FRGDDGIFDDSFIEERKQGLEQFLNKVAGHPLAQNERCLHMFLQ 119
>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 = 39.0 bits (91), Expect = 3e-04
Identities = 28/103 (27%), Positives = 43/103 (41%), Gaps = 13/103 (12%)
Query: 45 TSYEIKDKIALYKITVQVGEVCWSLSHRYSDFVELNDKLVKDHSLNKDLLPPKKVLRNL- 103
T YE++ + L + V RYSDF L +L +D + LP K + R L
Sbjct: 20 TDYEVRMRTNLPVFKKKESSV----RRRYSDFEWLRSELERDSKIVVPPLPGKALKRQLP 75
Query: 104 --------DPTFLEKRKTDLEIYLQNVVNFLEKSLPRCLIDFL 138
+ F+E+R+ LE ++ V +CL FL
Sbjct: 76 FRGDDGIFEEEFIEERRKGLETFINKVAGHPLAQNEKCLHMFL 118
>gnl|CDD|132782 cd06872, PX_SNX19_like_plant, The phosphoinositide binding Phox
Homology domain of uncharacterized SNX19-like 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 plant proteins containing an N-terminal
PXA domain, a central PX domain, and a C-terminal domain
that is conserved in some sorting nexins (SNXs). This is
the same domain architecture found in SNX19. SNX13 and
SNX14 also contain these three domains but also contain
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. In addition to protein-lipid
interaction, the PX domain may also be involved in
protein-protein interaction.
Length = 107
Score = 37.9 bits (88), Expect = 5e-04
Identities = 23/71 (32%), Positives = 39/71 (54%), Gaps = 3/71 (4%)
Query: 54 ALYKITVQVGE-VCWSLSHRYSDFVELNDKLVKDHSLNKDLLPPKKVLR-NLDPTFLEKR 111
A+Y + V E W + R+ +F L+ +L K+ LPPK+ L +LD F+E+R
Sbjct: 19 AVYSVAVTDNENETWVVKRRFRNFETLHRRL-KEVPKYNLELPPKRFLSSSLDGAFIEER 77
Query: 112 KTDLEIYLQNV 122
L+ YL+++
Sbjct: 78 CKLLDKYLKDL 88
>gnl|CDD|132812 cd07279, PX_SNX20_21_like, The phosphoinositide binding Phox
Homology domain of Sorting Nexins 20 and 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. This
subfamily consists of SNX20, SNX21, and similar
proteins. SNX20 interacts with P-Selectin glycoprotein
ligand-1 (PSGL-1), a surface-expressed mucin that acts
as a ligand for the selectin family of adhesion
proteins. It may function in the sorting and cycling of
PSGL-1 into endosomes. 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 = 36.9 bits (86), Expect = 0.001
Identities = 21/76 (27%), Positives = 35/76 (46%), Gaps = 2/76 (2%)
Query: 68 SLSHRYSDFVELNDKLVKDH-SLNKDLLPPKKVLR-NLDPTFLEKRKTDLEIYLQNVVNF 125
+ RYSDF++L L K H L + P+KVL N + +R E +L ++++
Sbjct: 37 FIERRYSDFLKLYKALRKQHPQLMAKVSFPRKVLMGNFSSELIAERSRAFEQFLGHILSI 96
Query: 126 LEKSLPRCLIDFLHLV 141
+ +DFL
Sbjct: 97 PNLRDSKAFLDFLQGP 112
>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 = 36.6 bits (84), Expect = 0.002
Identities = 31/111 (27%), Positives = 51/111 (45%), Gaps = 13/111 (11%)
Query: 45 TSYEIKDKIALYKITVQVGEVCWSLSHRYSDFVELNDKLVKDHSLNKDLLPPKKVLRNL- 103
T+YE++ + L ++ E C + RYSDF L ++L +D + LP K + R L
Sbjct: 22 TTYEVRMRTNL--PIFKLKESC--VRRRYSDFEWLKNELERDSKIVVPPLPGKALKRQLP 77
Query: 104 --------DPTFLEKRKTDLEIYLQNVVNFLEKSLPRCLIDFLHLVKYDIN 146
+ +F+E+R+ LE ++ + RCL FL D N
Sbjct: 78 FRGDEGIFEESFIEERRQGLEQFINKIAGHPLAQNERCLHMFLQDETIDRN 128
>gnl|CDD|132833 cd07300, PX_SNX20, The phosphoinositide binding Phox Homology
domain of Sorting Nexin 20. 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. SNX20 interacts with P-Selectin
glycoprotein ligand-1 (PSGL-1), a surface-expressed
mucin that acts as a ligand for the selectin family of
adhesion proteins. The PX domain of SNX20 binds PIs and
targets the SNX20/PSGL-1 complex to endosomes. SNX20 may
function in the sorting and cycling of PSGL-1 into
endosomes.
Length = 114
Score = 34.8 bits (80), Expect = 0.007
Identities = 23/74 (31%), Positives = 39/74 (52%), Gaps = 6/74 (8%)
Query: 69 LSHRYSDFVELNDKLVKDHS--LNKDLLPPKKVLRNLDPTFLEKRKTDLEIYLQNV--VN 124
+ RYSDF++L+ +L+ D S L + P KK+ N + +R+ L YL + +
Sbjct: 38 IERRYSDFLKLHQELLSDFSEELEDVVFPKKKLTGNFSEEIIAERRVALRDYLTLLYSLR 97
Query: 125 FLEKSLPRCLIDFL 138
F+ +S + DFL
Sbjct: 98 FVRRS--QAFQDFL 109
>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 = 35.0 bits (81), Expect = 0.007
Identities = 24/82 (29%), Positives = 38/82 (46%), Gaps = 13/82 (15%)
Query: 68 SLSHRYSDFVELNDKLVKDHSLNKDLLPP---KKVL--------RNLDPTFLEKRKTDLE 116
SL RYS+F L + LV + ++PP K+ + DP F+E+R+ LE
Sbjct: 47 SLWRRYSEFELLRNYLVV--TYPYVIVPPLPEKRAMFMWQKLSSDTFDPDFVERRRAGLE 104
Query: 117 IYLQNVVNFLEKSLPRCLIDFL 138
+L V E + ++FL
Sbjct: 105 NFLLRVAGHPELCQDKIFLEFL 126
>gnl|CDD|132805 cd06895, PX_PLD, The phosphoinositide binding Phox Homology domain
of Phospholipase D. 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. Phospholipase D (PLD) catalyzes the
hydrolysis of the phosphodiester bond of
phosphatidylcholine to generate membrane-bound
phosphatidic acid and choline. Members of this subfamily
contain PX and Pleckstrin Homology (PH) domains in
addition to the catalytic domain. PLD activity has been
detected in viruses, bacteria, yeast, plants, and
mammals, but the PX domain is not present in PLDs from
viruses and bacteria. PLDs are implicated in many
cellular functions like signaling, cytoskeletal
reorganization, vesicular transport, stress responses,
and the control of differentiation, proliferation, and
survival. Vertebrates contain two PLD isozymes, PLD1 and
PLD2. PLD1 is located mainly in intracellular membranes
while PLD2 is associated with plasma membranes. The PX
domain is involved in targeting of proteins to
PI-enriched membranes, and may also be involved in
protein-protein interaction.
Length = 140
Score = 34.7 bits (80), Expect = 0.009
Identities = 24/99 (24%), Positives = 36/99 (36%), Gaps = 29/99 (29%)
Query: 55 LYKITVQVGEVCWSLSHRYSDFVELNDKLVKDHSLNKDLLPPKKVLRNLD---------- 104
LY I +Q G+ W++ RY F EL+ L +L + LP ++
Sbjct: 25 LYTIELQHGQFTWTIKRRYKHFQELHQALKLYRALLRIPLPTRRHKEERLSLKRSRKPER 84
Query: 105 -------------------PTFLEKRKTDLEIYLQNVVN 124
L+ RK LE YLQN++
Sbjct: 85 EKKNRRLPSLPALPDILVSEEQLDSRKKQLENYLQNLLK 123
>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 = 33.8 bits (78), Expect = 0.013
Identities = 19/81 (23%), Positives = 26/81 (32%), Gaps = 14/81 (17%)
Query: 71 HRYSDFVELNDKLVK------------DHSLNKDLLPPKKVLRNLDPTFLEKRKTDLEIY 118
RYS+F L L + HSL P K D +E+RK L+ +
Sbjct: 32 RRYSEFESLRKNLTRLYPTLIIPPIPEKHSLKDYAKKPSKAKN--DAKIIERRKRMLQRF 89
Query: 119 LQNVVNFLEKSLPRCLIDFLH 139
L + FL
Sbjct: 90 LNRCLQHPILRNDIVFQKFLD 110
>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 = 32.3 bits (74), Expect = 0.055
Identities = 20/65 (30%), Positives = 30/65 (46%), Gaps = 9/65 (13%)
Query: 67 WSLSHRYSDFVELNDKLVKDHSLNKDLLPP----KKVLRNLD---PTFLEKRKTDLEIYL 119
+S+ RY DF+ L KL + H + ++PP V LD P F+ R L +L
Sbjct: 37 YSVRRRYQDFLWLRQKLEESHPTH--IIPPLPEKHSVKGLLDRFSPEFVATRMRALHKFL 94
Query: 120 QNVVN 124
+V
Sbjct: 95 NRIVE 99
>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 = 31.7 bits (72), Expect = 0.080
Identities = 18/74 (24%), Positives = 33/74 (44%), Gaps = 2/74 (2%)
Query: 69 LSHRYSDFVELNDKLVKDHSLNKD--LLPPKKVLRNLDPTFLEKRKTDLEIYLQNVVNFL 126
+S RYSDF L+ +L + P K++ +N + KR E +L ++ +
Sbjct: 38 ISRRYSDFERLHRRLRRLFGGEMAGVSFPRKRLRKNFTAETIAKRSRAFEQFLCHLHSLP 97
Query: 127 EKSLPRCLIDFLHL 140
E ++F +L
Sbjct: 98 ELRASPAFLEFFYL 111
>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 = 31.5 bits (72), Expect = 0.089
Identities = 21/100 (21%), Positives = 35/100 (35%), Gaps = 22/100 (22%)
Query: 38 SKINTHITSYEIKDKIALYKITVQV-------GEVCWSLSHRYSDFVELNDKLVKDHSLN 90
+ H Y YKIT +V + RYSDF +L+ +L + H
Sbjct: 8 TDTRRHKKGYTE------YKITSKVFSRSVPEDVSEVVVWKRYSDFKKLHRELSRLHKQL 61
Query: 91 KD-----LLPPKKVLRNLDPTFLEKRKTDLEIYLQNVVNF 125
P K D +E+R+ + +++F
Sbjct: 62 YLSGSFPPFPKGKYFGRFDAAVIEERR----QAILELLDF 97
>gnl|CDD|227680 COG5391, COG5391, Phox homology (PX) domain protein [Intracellular
trafficking and secretion / General function prediction
only].
Length = 524
Score = 32.1 bits (73), Expect = 0.18
Identities = 25/84 (29%), Positives = 36/84 (42%), Gaps = 7/84 (8%)
Query: 45 TSYEIKDKIALYKITVQVGEVCWSLSHRYSDFVELNDKLVKDHSLNK-DLLPPKKVLRNL 103
TSYEI L ++ + RYSDF L+ L+K L LP KK
Sbjct: 152 TSYEIITVTNLPSFQLRESRPL-VVRRRYSDFESLHSILIKLLPLCAIPPLPSKKSNSEY 210
Query: 104 -----DPTFLEKRKTDLEIYLQNV 122
F+E+R+ L+ +L+ V
Sbjct: 211 YGDRFSDEFIEERRQSLQNFLRRV 234
>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 = 30.2 bits (68), Expect = 0.31
Identities = 29/98 (29%), Positives = 44/98 (44%), Gaps = 10/98 (10%)
Query: 45 TSYEI--KDKIALYKITVQVGEVCWSLSHRYSDFVELNDKLVKDHS-LNKDLLPPKKVLR 101
T YEI + I +K+ V S+ RYSDF D L ++ + LP K
Sbjct: 20 TDYEIVCRTNIPAFKLRVS------SVRRRYSDFEYFRDILERESPRVMIPPLPGKIFTN 73
Query: 102 NLDPTFLEKRKTDLEIYLQNVVNF-LEKSLPRCLIDFL 138
+E+R+ LE +LQ+V L ++ + L FL
Sbjct: 74 RFSDEVIEERRQGLETFLQSVAGHPLLQTGSKVLAAFL 111
>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 = 30.4 bits (68), Expect = 0.33
Identities = 21/70 (30%), Positives = 38/70 (54%), Gaps = 1/70 (1%)
Query: 72 RYSDFVELNDKLVKDHSLNK-DLLPPKKVLRNLDPTFLEKRKTDLEIYLQNVVNFLEKSL 130
R++DF++L+ L K K PPK +LR + LE+R+ LE ++ +++ ++ S
Sbjct: 68 RFNDFLKLHTDLKKLFPKKKLPAAPPKGLLRMKNRALLEERRHSLEEWMGKLLSDIDLSR 127
Query: 131 PRCLIDFLHL 140
+ FL L
Sbjct: 128 SVPVASFLEL 137
>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 = 29.9 bits (68), Expect = 0.38
Identities = 23/73 (31%), Positives = 35/73 (47%), Gaps = 9/73 (12%)
Query: 69 LSHRYSDFVELNDKLVKDHSLNKDL--LPPKKVLRNLDPTFLEKRKTDLEIYLQNVVNFL 126
++ RYSDF +L+ L K+ K L LP K L EK + L YL++++
Sbjct: 52 VARRYSDFKKLHHDLKKEFP-GKKLPKLPHKDKLPR------EKLRLSLRQYLRSLLKDP 104
Query: 127 EKSLPRCLIDFLH 139
E + L +FL
Sbjct: 105 EVAHSSILQEFLT 117
>gnl|CDD|129130 TIGR00019, prfA, peptide chain release factor 1. This model
describes peptide chain release factor 1 (PrfA, RF-1),
and excludes the related peptide chain release factor 2
(PrfB, RF-2). RF-1 helps recognize and terminate
translation at UAA and UAG stop codons. The
mitochondrial release factors are prfA-like, although
not included above the trusted cutoff for this model.
RF-1 does not have a translational frameshift [Protein
synthesis, Translation factors].
Length = 360
Score = 30.8 bits (70), Expect = 0.42
Identities = 20/67 (29%), Positives = 31/67 (46%), Gaps = 1/67 (1%)
Query: 69 LSHRYSDFVELNDKLVKDHSLNKDLLPPKKVLRNLDPTFLEKRKTDLEIYLQNVVNFLEK 128
LS YS E+ D + +D+ K++L DP E K +LE L+ + LE+
Sbjct: 38 LSKEYSQLEEIVDCYREYQQAQEDIKEAKEILEESDPEMREMAKEELEE-LEEKIEELEE 96
Query: 129 SLPRCLI 135
L L+
Sbjct: 97 QLKVLLL 103
>gnl|CDD|197609 smart00257, LysM, Lysin motif.
Length = 44
Score = 27.8 bits (63), Expect = 0.61
Identities = 15/49 (30%), Positives = 24/49 (48%), Gaps = 10/49 (20%)
Query: 57 KITVQVGEVCWSLSHRY----SDFVELNDKLVKDHSLNKDLLPPKKVLR 101
TV+ G+ S++ RY SD +ELN + L+ D L + L+
Sbjct: 1 TYTVKKGDTLSSIARRYGISVSDLLELN------NILDPDNLQVGQKLK 43
>gnl|CDD|132800 cd06890, PX_Bem1p, The phosphoinositide binding Phox Homology
domain of Bem1p. 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 bear similarity
to Saccharomyces cerevisiae Bem1p, containing two Src
Homology 3 (SH3) domains at the N-terminus, a central PX
domain, and a C-terminal PB1 domain. Bem1p is a
scaffolding protein that is critical for proper Cdc42p
activation during bud formation in yeast. During budding
and mating, Bem1p migrates to the plasma membrane where
it can serve as an adaptor for Cdc42p and some other
proteins. Bem1p also functions as an effector of the G1
cyclin Cln3p and the cyclin-dependent kinase Cdc28p in
promoting vacuolar fusion. 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 Bem1p specifically binds
phosphatidylinositol-4-phosphate (PI4P).
Length = 112
Score = 29.2 bits (66), Expect = 0.61
Identities = 22/95 (23%), Positives = 42/95 (44%), Gaps = 11/95 (11%)
Query: 40 INTHITSYEIKDKIALYKITVQV--GEVCWSLSHRYSDFVELNDKLVK------DHSLNK 91
++ + S ++D Y++ + G+ L Y DF +L+ L+ + +K
Sbjct: 1 VSASVESVLLEDNRYWYRVRATLSDGKT-RYLCRYYQDFYKLHIALLDLFPAEAGRNSSK 59
Query: 92 DLLP--PKKVLRNLDPTFLEKRKTDLEIYLQNVVN 124
+LP P V ++ + KR DL YL ++N
Sbjct: 60 RILPYLPGPVTDVVNDSISLKRLNDLNEYLNELIN 94
>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 = 28.9 bits (65), Expect = 0.77
Identities = 19/60 (31%), Positives = 31/60 (51%), Gaps = 5/60 (8%)
Query: 68 SLSHRYSDFVELNDKLVKDHSLNKDLLPP---KKVLRNLDPTFLEKRKTDLEIYLQNVVN 124
S+ RY DF L +L +H ++PP K+ + D F+E+R+ LE L+ + N
Sbjct: 38 SVLRRYRDFRWLYRQLQNNHP--GVIVPPPPEKQSVGRFDDNFVEQRRAALEKMLRKIAN 95
>gnl|CDD|132803 cd06893, PX_SNX19, The phosphoinositide binding Phox Homology
domain of Sorting Nexin 19. 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. SNX19 contains an N-terminal
PXA domain, a central PX domain, and a C-terminal domain
that is conserved in some SNXs. These domains are also
found in SNX13 and SNX14, which also contain a regulator
of G protein signaling (RGS) domain in between the PXA
and PX domains. SNX19 interacts with IA-2, a major
autoantigen found in type-1 diabetes. It inhibits the
conversion of phosphatidylinositol-4,5-bisphosphate
[PI(4,5)P2] to PI(3,4,5)P3, which leads in the decrease
of protein phosphorylation in the Akt signaling pathway,
resulting in apoptosis. SNX19 may also be implicated in
coronary heart disease and thyroid oncocytic tumors.
Length = 132
Score = 29.0 bits (65), Expect = 0.80
Identities = 19/82 (23%), Positives = 39/82 (47%), Gaps = 7/82 (8%)
Query: 66 CWSLSHRYSDFVELNDKLVKDHSLNK--DLLPPKKVLR-----NLDPTFLEKRKTDLEIY 118
+++ R+ +F+ L +L ++ K ++ P K L N+D +E R+ LE +
Sbjct: 50 THTVNRRFREFLTLQTRLEENPKFRKIMNVKGPPKRLFDLPFGNMDKDKIEARRGLLETF 109
Query: 119 LQNVVNFLEKSLPRCLIDFLHL 140
L+ + + E S + +FL
Sbjct: 110 LRQLCSIPEISNSEEVQEFLAY 131
>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 = 28.5 bits (64), Expect = 1.1
Identities = 16/57 (28%), Positives = 27/57 (47%), Gaps = 6/57 (10%)
Query: 72 RYSDFVELNDKLVKDHSLNKDLLPP----KKVLRNLDPTFLEKRKTDLEIYLQNVVN 124
+ +F EL++KL K LP + R+ E+RK +L YL+++ N
Sbjct: 37 TFEEFQELHNKLSLLFPSLK--LPSFPARVVLGRSHIKQVAERRKIELNSYLKSLFN 91
>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 = 28.5 bits (64), Expect = 1.1
Identities = 20/56 (35%), Positives = 26/56 (46%), Gaps = 6/56 (10%)
Query: 70 SHRYSDFVELNDKLVK---DHSLNKDLLPPKKVLRNLDPTFLEKRKTDLEIYLQNV 122
S RY +F L+ L K D K LP K +L L+ R+ LE YL+ V
Sbjct: 35 SRRYREFANLHQNLKKEFPDFQFPK--LPGKWPF-SLSEQQLDARRRGLEQYLEKV 87
>gnl|CDD|212030 cd00118, LysM, Lysine Motif is a small domain involved in binding
peptidoglycan. LysM, a small globular domain with
approximately 40 amino acids, is a widespread protein
module involved in binding peptidoglycan in bacteria and
chitin in eukaryotes. The domain was originally
identified in enzymes that degrade bacterial cell walls,
but proteins involved in many other biological functions
also contain this domain. It has been reported that the
LysM domain functions as a signal for specific
plant-bacteria recognition in bacterial pathogenesis.
Many of these enzymes are modular and are composed of
catalytic units linked to one or several repeats of LysM
domains. LysM domains are found in bacteria and
eukaryotes.
Length = 45
Score = 26.7 bits (60), Expect = 1.2
Identities = 11/47 (23%), Positives = 21/47 (44%), Gaps = 10/47 (21%)
Query: 59 TVQVGEVCWSLSHRY----SDFVELNDKLVKDHSLNKDLLPPKKVLR 101
TV+ G+ WS++ +Y + N +N D + P + L+
Sbjct: 4 TVKPGDTLWSIAKKYGVTVEELAAAN------PLINPDCIYPGQKLK 44
>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 = 28.5 bits (63), Expect = 1.2
Identities = 22/70 (31%), Positives = 34/70 (48%), Gaps = 13/70 (18%)
Query: 67 WSLSHRYSDFVELNDKLVKDHSLNKDLLPPK-----------KVLRNLDPT--FLEKRKT 113
+S+ R+SDF+ L+ KL + ++PP KV + + F+EKR+
Sbjct: 37 FSVRRRFSDFLGLHSKLASKYLHVGYIVPPAPEKSIVGMTKVKVGKEDSSSTEFVEKRRA 96
Query: 114 DLEIYLQNVV 123
LE YLQ V
Sbjct: 97 ALERYLQRTV 106
>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 = 28.4 bits (64), Expect = 1.3
Identities = 26/87 (29%), Positives = 39/87 (44%), Gaps = 15/87 (17%)
Query: 41 NTHITSYEIKDKIALYKITVQVGEVCWSLSHRYSDFVELNDKLVKDHSLNKDLLPP---K 97
+T+I SY I K L + E + RYSDFV L++ L D ++PP K
Sbjct: 17 DTYI-SYLITTKTNLP--SFSRKEFK--VRRRYSDFVFLHECLSNDF--PACVVPPLPDK 69
Query: 98 KVLRNL-----DPTFLEKRKTDLEIYL 119
L + P F+ +R L+ +L
Sbjct: 70 HRLEYITGDRFSPEFITRRAQSLQRFL 96
>gnl|CDD|178257 PLN02651, PLN02651, cysteine desulfurase.
Length = 364
Score = 28.9 bits (65), Expect = 1.8
Identities = 18/62 (29%), Positives = 23/62 (37%), Gaps = 13/62 (20%)
Query: 5 VPDSINCSPRSIIFLGCASRPSKFIMACLYSNNSKINTHITSYEIKDKIALYKITVQVGE 64
V I P+ IIF A+ SNN I + Y+ K K + IT Q
Sbjct: 52 VAALIGADPKEIIFTSGATE----------SNNLAIKGVMHFYKDKKK---HVITTQTEH 98
Query: 65 VC 66
C
Sbjct: 99 KC 100
>gnl|CDD|238681 cd01385, MYSc_type_IX, Myosin motor domain, type IX myosins. Myosin
IX is a processive single-headed motor, which might play
a role in signalling. This catalytic (head) domain has
ATPase activity and belongs to the larger group of
P-loop NTPases. Myosins are actin-dependent molecular
motors that play important roles in muscle contraction,
cell motility, and organelle transport. The head domain
is a molecular motor, which utilizes ATP hydrolysis to
generate directed movement toward the plus end along
actin filaments. A cyclical interaction between myosin
and actin provides the driving force. Rates of ATP
hydrolysis and consequently the speed of movement along
actin filaments vary widely, from about 0.04 micrometer
per second for myosin I to 4.5 micrometer per second for
myosin II in skeletal muscle. Myosin II moves in
discrete steps about 5-10 nm long and generates 1-5
piconewtons of force. Upon ATP binding, the myosin head
dissociates from an actin filament. ATP hydrolysis
causes the head to pivot and associate with a new actin
subunit. The release of Pi causes the head to pivot and
move the filament (power stroke). Release of ADP
completes the cycle.
Length = 692
Score = 27.9 bits (62), Expect = 3.8
Identities = 23/98 (23%), Positives = 38/98 (38%), Gaps = 21/98 (21%)
Query: 28 FIMACLYSNNSKINTHITSYEIKDKIALYKI-------TVQVGEVCWSLSHRYSDFVELN 80
F + C+ SN KI D++ L ++ TV++ +S+ + Y DF +
Sbjct: 584 FFIRCIKSNAEKIENC-----FDDELVLRQLRYTGMLETVRIRRAGYSVRYTYQDFTQQY 638
Query: 81 DKLVKDHSLNKDLLPPKKVLRNLDPTFLEKRKTDLEIY 118
L L K ++ + T L K K D Y
Sbjct: 639 RIL-----LPKGAQSCREDIS----TLLSKMKIDKRNY 667
>gnl|CDD|181207 PRK08043, PRK08043, bifunctional acyl-[acyl carrier protein]
synthetase/2-acylglycerophosphoethanolamine
acyltransferase; Validated.
Length = 718
Score = 27.8 bits (62), Expect = 4.4
Identities = 15/46 (32%), Positives = 22/46 (47%)
Query: 38 SKINTHITSYEIKDKIALYKITVQVGEVCWSLSHRYSDFVELNDKL 83
++I T TS + DK L+ + Q+ +V W D V DKL
Sbjct: 301 AEIKTIFTSRQFLDKGKLWHLPEQLTQVRWVYLEDLKDDVTTADKL 346
>gnl|CDD|218096 pfam04461, DUF520, Protein of unknown function (DUF520). Family of
uncharacterized proteins.
Length = 160
Score = 27.0 bits (61), Expect = 4.5
Identities = 17/58 (29%), Positives = 26/58 (44%), Gaps = 14/58 (24%)
Query: 69 LSHRYSDF------VELNDKLVK-----DHSLN--KDLLPPKKVLRNLDPTFLEKRKT 113
+S R+ DF +EL +K + D L KD+L K + R +D L+ K
Sbjct: 26 ISTRF-DFKGSKASIELKEKEITLTAESDFQLKQVKDILRTKLIKRGVDLKALDFGKV 82
>gnl|CDD|212665 cd07793, FGGY_GK5_metazoa, metazoan glycerol kinase 5-like
proteins; belongs to the FGGY family of carbohydrate
kinases. This subgroup corresponds to a group of
metazoan putative glycerol kinases (GK), which may be
coded by the GK-like gene, GK5. Sequence comparison
shows members of this group are homologs of bacterial
GKs, and they retain all functionally important
residues. However, GK-like proteins in this family do
not have detectable GK activity. The reason remains
unclear. It has been suggested tha the conserved
catalytic residues might facilitate them performing a
distinct function. GKs belong to the FGGY family of
carbohydrate kinases, the monomers of which contain two
large domains, which are separated by a deep cleft that
forms the active site. This model includes both the
N-terminal domain, which adopts a ribonuclease H-like
fold, and the structurally related C-terminal domain.
Length = 504
Score = 27.3 bits (61), Expect = 5.8
Identities = 11/22 (50%), Positives = 13/22 (59%), Gaps = 2/22 (9%)
Query: 152 FASFCFNEGDKYLSMGNSTHAF 173
F S CF GD ++MG T AF
Sbjct: 262 FGSCCFERGDVKITMG--TGAF 281
>gnl|CDD|132830 cd07297, PX_PLD2, The phosphoinositide binding Phox Homology
domain of Phospholipase D2. 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. Phospholipase D (PLD)
catalyzes the hydrolysis of the phosphodiester bond of
phosphatidylcholine to generate membrane-bound
phosphatidic acid and choline. PLD activity has been
detected in viruses, bacteria, yeast, plants, and
mammals, but the PX domain is not present in PLDs from
viruses and bacteria. PLDs are implicated in many
cellular functions like signaling, cytoskeletal
reorganization, vesicular transport, stress responses,
and the control of differentiation, proliferation, and
survival. PLD2 contains PX and Pleckstrin Homology (PH)
domains in addition to the catalytic domain. It
mediates EGF-dependent insulin secretion and
EGF-induced Ras activation by the guanine
nucleotide-exchange factor Son of sevenless (Sos). It
regulates mast cell activation by associating and
promoting the activation of the protein tyrosine kinase
Syk. PLD2 also participates in the sphingosine
1-phosphate-mediated pathway that stimulates the
migration of endothelial cells, an important factor in
angiogenesis. The PX domain is involved in targeting of
proteins to PI-enriched membranes, and may also be
involved in protein-protein interaction.
Length = 130
Score = 26.4 bits (58), Expect = 6.8
Identities = 12/41 (29%), Positives = 21/41 (51%), Gaps = 1/41 (2%)
Query: 55 LYKITVQVGEVCWSLSHRYSDFVELNDKLVKDHSLNKDLLP 95
LY + + GE W++ ++ F EL+ L + H + LP
Sbjct: 25 LYTVRLTHGEFTWTVKKKFKHFQELHRDLYR-HKVMLSFLP 64
>gnl|CDD|132829 cd07296, PX_PLD1, The phosphoinositide binding Phox Homology
domain of Phospholipase D1. 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. Phospholipase D (PLD)
catalyzes the hydrolysis of the phosphodiester bond of
phosphatidylcholine to generate membrane-bound
phosphatidic acid and choline. PLDs are implicated in
many cellular functions like signaling, cytoskeletal
reorganization, vesicular transport, stress responses,
and the control of differentiation, proliferation, and
survival. PLD1 contains PX and Pleckstrin Homology (PH)
domains in addition to the catalytic domain. It acts as
an effector of Rheb in the signaling of the mammalian
target of rapamycin (mTOR), a serine/threonine protein
kinase that transduces nutrients and other stimuli to
regulate many cellular processes. PLD1 also regulates
the secretion of the procoagulant von Willebrand factor
(VWF) in endothelial cells. 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 PLD1 specifically binds to
phosphatidylinositol-3,4,5-trisphosphate [PI(3,4,5)P3],
which enables PLD1 to mediate signals via the ERK1/2
pathway.
Length = 135
Score = 26.4 bits (58), Expect = 7.7
Identities = 12/41 (29%), Positives = 22/41 (53%)
Query: 45 TSYEIKDKIALYKITVQVGEVCWSLSHRYSDFVELNDKLVK 85
TS K + +Y I + GE W + ++ F EL+ +L++
Sbjct: 17 TSDVKKPSLNVYTIELTHGEFTWQVKRKFKHFQELHRELLR 57
>gnl|CDD|215802 pfam00224, PK, Pyruvate kinase, barrel domain. This domain of the
is actually a small beta-barrel domain nested within a
larger TIM barrel. The active site is found in a cleft
between the two domains.
Length = 348
Score = 26.9 bits (60), Expect = 7.9
Identities = 11/35 (31%), Positives = 15/35 (42%)
Query: 105 PTFLEKRKTDLEIYLQNVVNFLEKSLPRCLIDFLH 139
P EK K DL ++ V+ + S R D L
Sbjct: 172 PALSEKDKADLRFGVKQGVDMIFASFVRTASDVLE 206
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
0.322 0.138 0.413
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: 9,988,677
Number of extensions: 916332
Number of successful extensions: 817
Number of sequences better than 10.0: 1
Number of HSP's gapped: 785
Number of HSP's successfully gapped: 66
Length of query: 199
Length of database: 10,937,602
Length adjustment: 92
Effective length of query: 107
Effective length of database: 6,857,034
Effective search space: 733702638
Effective search space used: 733702638
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 (21.9 bits)
S2: 56 (25.4 bits)