RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy8595
(128 letters)
>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 = 134 bits (339), Expect = 3e-42
Identities = 52/82 (63%), Positives = 61/82 (74%), Gaps = 1/82 (1%)
Query: 2 HFSIPDTQQLCDDSG-KYTGYNLHLNGEYHCSVRYKQLHNFNEQLKKLYGPENVPSFPPK 60
HFSIPDTQ+L D+ G Y YN+H+NG HCSVRY QLH NEQLKK +G +P FPPK
Sbjct: 1 HFSIPDTQELSDEGGSTYVAYNIHINGVLHCSVRYSQLHGLNEQLKKEFGNRKLPPFPPK 60
Query: 61 KLFPLSVIQIEERRTHLEKYMQ 82
KL PL+ Q+EERR LEKY+Q
Sbjct: 61 KLLPLTPAQLEERRLQLEKYLQ 82
>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 = 65.1 bits (159), Expect = 7e-15
Identities = 35/97 (36%), Positives = 48/97 (49%), Gaps = 8/97 (8%)
Query: 2 HFSIPDTQQLCDDSGKYTGYNLH----LNGEYHCSVRYKQLHNFNEQLKKLYGPENVPSF 57
SIPD +++ D KY Y + E+ RY +E+LKK + +P
Sbjct: 1 SVSIPDYEKVKDGGKKYVVYIIEVTTQGGEEWTVYRRYSDFEELHEKLKKKFPGVILPPL 60
Query: 58 PPKKLFP-LSVIQIEERRTHLEKYMQ---SCKKLWNS 90
PPKKLF L IEERR LE+Y+Q + +L NS
Sbjct: 61 PPKKLFGNLDPEFIEERRKQLEQYLQSLLNHPELRNS 97
>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 = 64.7 bits (158), Expect = 9e-15
Identities = 28/82 (34%), Positives = 46/82 (56%)
Query: 1 MHFSIPDTQQLCDDSGKYTGYNLHLNGEYHCSVRYKQLHNFNEQLKKLYGPENVPSFPPK 60
+ SIPD + + + K+ YN+++ G CS RY++ N ++ LKK + P P K
Sbjct: 4 VPISIPDYKHVEQNGEKFVVYNIYMAGRQLCSRRYREFANLHQNLKKEFPDFQFPKLPGK 63
Query: 61 KLFPLSVIQIEERRTHLEKYMQ 82
F LS Q++ RR LE+Y++
Sbjct: 64 WPFSLSEQQLDARRRGLEQYLE 85
>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 = 51.2 bits (123), Expect = 1e-09
Identities = 25/79 (31%), Positives = 33/79 (41%), Gaps = 7/79 (8%)
Query: 13 DDSGKYTGYNLHLNG---EYHCSVRYKQLHNFNEQLKKLYGPENVPSFPPKKLFPLSVI- 68
D Y + E+ S RY + +LKK + +P P KKLF
Sbjct: 9 DGKHYYYVIEIETKTGLEEWTVSRRYSDFLELHSKLKKHFPRSILPPLPGKKLFGRLNNF 68
Query: 69 ---QIEERRTHLEKYMQSC 84
IE+RR LEKY+QS
Sbjct: 69 SEEFIEKRRRGLEKYLQSL 87
>gnl|CDD|216119 pfam00787, PX, PX domain. PX domains bind to phosphoinositides.
Length = 109
Score = 51.2 bits (123), Expect = 2e-09
Identities = 23/76 (30%), Positives = 33/76 (43%), Gaps = 4/76 (5%)
Query: 13 DDSGKYTGYNLHLNG---EYHCSVRYKQLHNFNEQLKKLYGPENVPSFPPKKLFP-LSVI 68
Y Y + E+ RY ++QL + + +P PPKKLF S
Sbjct: 15 GKKHTYYLYEVTTKTNLKEWSVKRRYSDFEELHKQLLRKFPGRIIPPLPPKKLFGRFSEE 74
Query: 69 QIEERRTHLEKYMQSC 84
IE+RR LE+Y+Q
Sbjct: 75 FIEKRRKGLEEYLQRL 90
>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 = 49.2 bits (118), Expect = 1e-08
Identities = 29/83 (34%), Positives = 44/83 (53%), Gaps = 7/83 (8%)
Query: 4 SIPDTQQLCDDSGK-YTGY--NLHLNGEYHC-SVRYKQLHNFNEQLKKLYGPENVPSFPP 59
SIP + D+S K YT + + +NG H RY + H +++LKK P FPP
Sbjct: 4 SIPSYRLEVDESEKPYTVFTIEVLVNGRRHTVEKRYSEFHALHKKLKKSIKT---PDFPP 60
Query: 60 KKLFPLSVIQIEERRTHLEKYMQ 82
K++ + +E+RR LE Y+Q
Sbjct: 61 KRVRNWNPKVLEQRRQGLEAYLQ 83
>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 = 48.8 bits (117), Expect = 1e-08
Identities = 31/110 (28%), Positives = 47/110 (42%), Gaps = 12/110 (10%)
Query: 1 MHFSIPDTQQLCDDSGKYTGYNLHLN---GEYHCSVRYKQLHNFNEQLKKLYGPENVPSF 57
+ SIP T YT YN+ + Y S RY + ++QL+ G E
Sbjct: 1 LEISIPTTSVS---PKPYTVYNIQVRLPLRSYTVSRRYSEFVALHKQLESEVGIEPPYPL 57
Query: 58 PPKKLFPLSVIQ---IEERRTHLEKYMQSCKKLWNSLHRDIRDSQSLGAF 104
PPK F + +EERR LE ++++ L N R+S ++ F
Sbjct: 58 PPKSWFLSTSSNPKLVEERRVGLEAFLRA---LLNDEDSRWRNSPAVKEF 104
>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 = 40.8 bits (96), Expect = 2e-05
Identities = 21/59 (35%), Positives = 30/59 (50%), Gaps = 8/59 (13%)
Query: 34 RYKQLHNFNEQLKKLYGPENVPSFPPKKLFPLSVIQ-IEERRTHLEKYMQS----CKKL 87
R+++LH +K Y FPPKKLF + +ERR LE Y+++ C KL
Sbjct: 40 RFRELHKT---MKLKYPEVAALEFPPKKLFGNKSERVAKERRRQLETYLRNFFSVCLKL 95
>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 = 38.4 bits (90), Expect = 2e-04
Identities = 21/77 (27%), Positives = 34/77 (44%), Gaps = 8/77 (10%)
Query: 34 RYKQLHNFNEQLKKLYGPENVPSFPPKKLFPLSVIQ---IEERRTHLEKYMQSCKKLWNS 90
RY + ++ LKK Y FP K+ L + +EERR LEKY+Q K+
Sbjct: 62 RYSEFLELHKYLKKRYPGVLKLDFPQKRKISLKYSKTLLVEERRKALEKYLQELLKI--- 118
Query: 91 LHRDIRDSQSLGAFKTS 107
++ + + F +
Sbjct: 119 --PEVCEDEEFRKFLSQ 133
>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 = 36.9 bits (86), Expect = 5e-04
Identities = 16/51 (31%), Positives = 27/51 (52%), Gaps = 1/51 (1%)
Query: 34 RYKQLHNFNEQLKKLYGPENVPSFPPKKLFPLSVIQ-IEERRTHLEKYMQS 83
RY + + +++LKK + FPPKK + +EERR L+ Y++
Sbjct: 37 RYSEFYELHKKLKKKFPVVRSFDFPPKKAIGNKDAKFVEERRKRLQVYLRR 87
>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 = 35.1 bits (81), Expect = 0.003
Identities = 19/84 (22%), Positives = 32/84 (38%), Gaps = 10/84 (11%)
Query: 23 LHLNGEYHCSVRYKQLHNFNEQLKKLYGPEN--------VPSFPPKKLFPLSVIQIEERR 74
+Y RY+Q +L++ +GPE +P+ P K E R
Sbjct: 29 TKGGSKYLIYRRYRQFFALQSKLEERFGPEAGSSAYDCTLPTLPGKIYVGRKAEIAERRI 88
Query: 75 THLEKYMQS--CKKLWNSLHRDIR 96
L +YM+ +W + D+R
Sbjct: 89 PLLNRYMKELLSLPVWVLMDEDVR 112
>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 = 33.3 bits (77), Expect = 0.009
Identities = 25/90 (27%), Positives = 38/90 (42%), Gaps = 11/90 (12%)
Query: 4 SIPDTQQLCDDSGKYTGY------NLHLNGEYHCSV--RYKQLHNFNEQLKKLYGPENVP 55
S+ D ++ D Y Y NL + SV RY E+L + Y VP
Sbjct: 4 SVTDPVKVGDGMSAYVVYRVTTKTNLPDFKKSEFSVLRRYSDFLWLYERLVEKYPGRIVP 63
Query: 56 SFPPKKL---FPLSVIQIEERRTHLEKYMQ 82
P K+ F + IE+RR LE++++
Sbjct: 64 PPPEKQAVGRFKVKFEFIEKRRAALERFLR 93
>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 = 32.8 bits (75), Expect = 0.018
Identities = 18/91 (19%), Positives = 32/91 (35%), Gaps = 10/91 (10%)
Query: 14 DSGKYTGYNLHLNGEYHCSVRYKQLHNFNEQLKKLYGPENVPSFPPKKLFPLSVIQIEER 73
+ + + S +Y + ++L + Y +P P K LF +S I ER
Sbjct: 36 SAKHKEEDVVQ----FMVSKKYSEFEELYKKLSEKYPGTILPPLPRKALF-VSESDIRER 90
Query: 74 RTHLEKYMQSCKKLWNSLHRDIRDSQSLGAF 104
R +M+ K + + L F
Sbjct: 91 RAAFNDFMRFISK-----DEKLANCPELLEF 116
>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 = 32.7 bits (74), Expect = 0.020
Identities = 17/49 (34%), Positives = 28/49 (57%), Gaps = 1/49 (2%)
Query: 34 RYKQLHNFNEQLKKLYGPENVPSFPPKKLFPL-SVIQIEERRTHLEKYM 81
R+ + LKKL+ + +P+ PPK L + + +EERR LE++M
Sbjct: 68 RFNDFLKLHTDLKKLFPKKKLPAAPPKGLLRMKNRALLEERRHSLEEWM 116
>gnl|CDD|180720 PRK06836, PRK06836, aspartate aminotransferase; Provisional.
Length = 394
Score = 32.5 bits (75), Expect = 0.035
Identities = 15/50 (30%), Positives = 22/50 (44%), Gaps = 8/50 (16%)
Query: 43 EQLKKLYGPENV-------PSFPPKKLFPLSVIQI-EERRTHLEKYMQSC 84
+LK YG +NV PS PP ++ ++ EE L YM +
Sbjct: 24 ARLKAEYGADNVFDFSLGNPSVPPPAAVKEALRELAEEEDPGLHGYMPNA 73
>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 = 31.5 bits (72), Expect = 0.054
Identities = 19/51 (37%), Positives = 29/51 (56%), Gaps = 1/51 (1%)
Query: 34 RYKQLHNFNEQLKKLYGPENVPSFPPKKLFP-LSVIQIEERRTHLEKYMQS 83
RY H+ + +LK+ + + SFP KK F L +E+RR L +Y+QS
Sbjct: 46 RYSDFHDLHMRLKEKFPNLSKLSFPGKKTFNNLDRAFLEKRRKMLNQYLQS 96
>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 = 30.5 bits (69), Expect = 0.099
Identities = 18/53 (33%), Positives = 24/53 (45%), Gaps = 5/53 (9%)
Query: 34 RYKQLHNFNEQLKKLYGPENVPSFPPKKL---FPLSVIQIEERRTHLEKYMQS 83
RY F + L++ +P P K F VI EERR LE ++QS
Sbjct: 43 RYSDFEYFRDILERESPRVMIPPLPGKIFTNRFSDEVI--EERRQGLETFLQS 93
>gnl|CDD|227680 COG5391, COG5391, Phox homology (PX) domain protein [Intracellular
trafficking and secretion / General function prediction
only].
Length = 524
Score = 31.3 bits (71), Expect = 0.11
Identities = 24/99 (24%), Positives = 34/99 (34%), Gaps = 18/99 (18%)
Query: 4 SIPDTQ-QLCDDSGKYTGYNL---------HLNGEYHCSV--RYKQLHNFNEQLKKLYGP 51
S P + L D K+T Y + L V RY + + L KL
Sbjct: 136 SNPQSLTLLVDSRDKHTSYEIITVTNLPSFQLRESRPLVVRRRYSDFESLHSILIKLLPL 195
Query: 52 ENVPSFPPKKLFPLSVIQ------IEERRTHLEKYMQSC 84
+P P KK IEERR L+ +++
Sbjct: 196 CAIPPLPSKKSNSEYYGDRFSDEFIEERRQSLQNFLRRV 234
>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 = 30.4 bits (69), Expect = 0.12
Identities = 10/34 (29%), Positives = 17/34 (50%)
Query: 50 GPENVPSFPPKKLFPLSVIQIEERRTHLEKYMQS 83
+PS P +S Q++ R+ LE Y+Q+
Sbjct: 87 KNRRLPSLPALPDILVSEEQLDSRKKQLENYLQN 120
>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 = 29.6 bits (67), Expect = 0.21
Identities = 24/98 (24%), Positives = 36/98 (36%), Gaps = 18/98 (18%)
Query: 2 HFSIPDTQQLCDDSGKYTGYNL------HLNGEYHCSV----RYKQLHNFNEQL----KK 47
F++ DT++ YT Y + E V RY + +L K+
Sbjct: 4 SFTVTDTRR---HKKGYTEYKITSKVFSRSVPEDVSEVVVWKRYSDFKKLHRELSRLHKQ 60
Query: 48 LYGPENVPSFPPKKLFPLSVIQ-IEERRTHLEKYMQSC 84
LY + P FP K F IEERR + + +
Sbjct: 61 LYLSGSFPPFPKGKYFGRFDAAVIEERRQAILELLDFV 98
>gnl|CDD|220902 pfam10907, DUF2749, Protein of unknown function (DUF2749). This
bacterial family of proteins appear to come from the Trb
operon however currently no function is known.
Length = 67
Score = 28.6 bits (64), Expect = 0.28
Identities = 10/32 (31%), Positives = 15/32 (46%), Gaps = 5/32 (15%)
Query: 71 EERRTHLEKYMQSCKKLWNSLHRDIRDSQSLG 102
EE+R EK+ K+L I+D Q +
Sbjct: 38 EEQREAREKFFGGDKEL-----PPIKDGQEMR 64
>gnl|CDD|216531 pfam01496, V_ATPase_I, V-type ATPase 116kDa subunit family. This
family consists of the 116kDa V-type ATPase (vacuolar
(H+)-ATPases) subunits, as well as V-type ATP synthase
subunit i. The V-type ATPases family are proton pumps
that acidify intracellular compartments in eukaryotic
cells for example yeast central vacuoles,
clathrin-coated and synaptic vesicles. They have
important roles in membrane trafficking processes. The
116kDa subunit (subunit a) in the V-type ATPase is part
of the V0 functional domain responsible for proton
transport. The a subunit is a transmembrane glycoprotein
with multiple putative transmembrane helices it has a
hydrophilic amino terminal and a hydrophobic carboxy
terminal. It has roles in proton transport and assembly
of the V-type ATPase complex. This subunit is encoded by
two homologous gene in yeast VPH1 and STV1.
Length = 707
Score = 30.0 bits (68), Expect = 0.34
Identities = 17/94 (18%), Positives = 34/94 (36%)
Query: 26 NGEYHCSVRYKQLHNFNEQLKKLYGPENVPSFPPKKLFPLSVIQIEERRTHLEKYMQSCK 85
N C ++L ++KKL P P + +EE LE ++ +
Sbjct: 28 NEVRRCDEVERKLRKLESKIKKLGIPLKDTGGKPDVPPSKEFLDLEEEILDLEAEIKEVE 87
Query: 86 KLWNSLHRDIRDSQSLGAFKTSLVKYLKGTVKET 119
+ SL ++I + + +L ++E
Sbjct: 88 ENLESLEKEINELEEWLNVLDEEKSFLDENLEEL 121
>gnl|CDD|163621 cd07378, MPP_ACP5, Homo sapiens acid phosphatase 5 and related
proteins, metallophosphatase domain. Acid phosphatase 5
(ACP5) removes the mannose 6-phosphate recognition
marker from lysosomal proteins. The exact site of
dephosphorylation is not clear. Evidence suggests
dephosphorylation may take place in a prelysosomal
compartment as well as in the lysosome. ACP5 belongs 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 = 277
Score = 28.8 bits (65), Expect = 0.70
Identities = 10/41 (24%), Positives = 14/41 (34%), Gaps = 4/41 (9%)
Query: 7 DTQQLCDDSGKYTGYNLHLNGEYHCSVRYKQLHNFNEQLKK 47
DT LC +S NG+ +QL + L
Sbjct: 127 DTVPLCGNSDDIASPYGPPNGKLA----EEQLAWLEKTLAA 163
>gnl|CDD|181460 PRK08534, PRK08534, pyruvate ferredoxin oxidoreductase subunit
gamma; Reviewed.
Length = 181
Score = 27.3 bits (61), Expect = 1.7
Identities = 14/40 (35%), Positives = 18/40 (45%), Gaps = 4/40 (10%)
Query: 91 LHRDIRDSQSLGAF--KTSLVK--YLKGTVKETFSGWVEE 126
L I ++ LGAF T V LK + E F G + E
Sbjct: 125 LGVPIVNTTMLGAFAGATGEVSLESLKKAILERFPGKLGE 164
>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 = 26.6 bits (59), Expect = 2.7
Identities = 13/52 (25%), Positives = 26/52 (50%), Gaps = 2/52 (3%)
Query: 34 RYKQLHNFNEQLKKLYGPENVPSFPPKKLFPLSVIQ--IEERRTHLEKYMQS 83
+++ + +L L+ +PSFP + + S I+ E R+ L Y++S
Sbjct: 37 TFEEFQELHNKLSLLFPSLKLPSFPARVVLGRSHIKQVAERRKIELNSYLKS 88
>gnl|CDD|240204 cd05699, S1_Rrp5_repeat_hs7, S1_Rrp5_repeat_hs7: Rrp5 is a
trans-acting factor important for biogenesis of both
the 40S and 60S eukaryotic ribosomal subunits. Rrp5 has
two distinct regions, an N-terminal region containing
tandemly repeated S1 RNA-binding domains (12 S1 repeats
in Saccharomyces cerevisiae Rrp5 and 14 S1 repeats in
Homo sapiens Rrp5) and a C-terminal region containing
tetratricopeptide repeat (TPR) motifs thought to be
involved in protein-protein interactions. Mutational
studies have shown that each region represents a
specific functional domain. Deletions within the
S1-containing region inhibit pre-rRNA processing at
either site A3 or A2, whereas deletions within the TPR
region confer an inability to support cleavage of
A0-A2. This CD includes H. sapiens S1 repeat 7 (hs7).
Rrp5 is found in eukaryotes but not in prokaryotes or
archaea.
Length = 72
Score = 25.9 bits (57), Expect = 2.8
Identities = 10/41 (24%), Positives = 16/41 (39%), Gaps = 14/41 (34%)
Query: 51 PENVPSFPPKKLFPLSVIQIEERRTHLEKYMQSCKKLWNSL 91
PE + +F P HL ++ +C LW+ L
Sbjct: 22 PEEIRAFLPT--------------MHLSDHVSNCPLLWHCL 48
>gnl|CDD|178003 PLN02375, PLN02375, molybderin biosynthesis protein CNX3.
Length = 270
Score = 26.6 bits (58), Expect = 4.4
Identities = 17/73 (23%), Positives = 31/73 (42%), Gaps = 18/73 (24%)
Query: 38 LHNFNEQLKKLYGPENVPSFP---------PKKLFPLSVIQIEERRTHLEKYMQSCKKLW 88
++ N++++ ++G E P P K+ PL I + R +E Y +S
Sbjct: 40 INELNQEMQSIFGQEPSPDGPGTMDFSELKSSKIEPLRSKNI-DFRQQIE-YHKSTHSSK 97
Query: 89 NSLHRDIRDSQSL 101
N DSQ++
Sbjct: 98 N-------DSQAI 103
>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 = 25.8 bits (57), Expect = 4.7
Identities = 24/84 (28%), Positives = 36/84 (42%), Gaps = 10/84 (11%)
Query: 10 QLCDDSGKYTGYNLHLNGEYHCSV--------RYKQLHNFNEQLKKLYGPENVPSFPPKK 61
DD G YT Y + L+ C RY + +L+K +PS PPK
Sbjct: 10 HKEDDWGSYTDYEIFLHTNSMCFTLKTSCVRRRYSEFVWLRNRLQKNALLIQLPSLPPKN 69
Query: 62 LFPLSVIQ--IEERRTHLEKYMQS 83
LF + IEER+ L+ +++
Sbjct: 70 LFGRFNNEGFIEERQQGLQDFLEK 93
>gnl|CDD|130134 TIGR01062, parC_Gneg, DNA topoisomerase IV, A subunit,
proteobacterial. Operationally, topoisomerase IV is a
type II topoisomerase required for the decatenation of
chromosome segregation. Not every bacterium has both a
topo II and a topo IV. The topo IV families of the
Gram-positive bacteria and the Gram-negative bacteria
appear not to represent a single clade among the type II
topoisomerases, and are represented by separate models
for this reason [DNA metabolism, DNA replication,
recombination, and repair].
Length = 735
Score = 26.4 bits (58), Expect = 5.1
Identities = 13/44 (29%), Positives = 28/44 (63%), Gaps = 2/44 (4%)
Query: 69 QIEERRTHLEKYMQSCKKLWNSLHRDIR-DSQSLG-AFKTSLVK 110
++E+ R LEK ++S ++L + ++I+ D+ G A ++SL +
Sbjct: 435 ELEKERAILEKILKSERELNQLVKKEIQADATKYGLARRSSLEE 478
>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 = 25.3 bits (56), Expect = 6.1
Identities = 15/49 (30%), Positives = 25/49 (51%), Gaps = 1/49 (2%)
Query: 34 RYKQLHNFNEQLKKLYGPENVPSFPPKKLFPLSVIQ-IEERRTHLEKYM 81
RY +E L K Y VP+ PPK++ + + +E RR L +++
Sbjct: 35 RYSDFVWLHEYLLKRYPYRMVPALPPKRIGGSADREFLEARRRGLSRFL 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 = 25.3 bits (56), Expect = 6.5
Identities = 18/58 (31%), Positives = 25/58 (43%), Gaps = 16/58 (27%)
Query: 34 RYKQLHNFNEQL-------KKLYGPENVPSFPPKKLF-PLSVIQIEERRTHLEKYMQS 83
RY +++L K L PPKKL S +E+RR LE Y+Q+
Sbjct: 36 RYSDFAELHDKLVAEHKVDKDL--------LPPKKLIGNKSPSFVEKRRKELEIYLQT 85
>gnl|CDD|234375 TIGR03860, FMN_nitrolo, FMN-dependent oxidoreductase,
nitrilotriacetate monooxygenase family. This model
represents a distinctive clade, in which all
characterized members are FMN-binding, within the larger
family of luciferase-like monooxygenases (LLM), among
which there are both FMN- and F420-binding enzymes. A
well-characterized member is nitrilotriacetate
monooxygenase from Aminobacter aminovorans
(Chelatobacter heintzii), where nitrilotriacetate is a
chelating agent used in detergents [Unknown function,
Enzymes of unknown specificity].
Length = 422
Score = 25.9 bits (58), Expect = 7.0
Identities = 11/29 (37%), Positives = 16/29 (55%), Gaps = 3/29 (10%)
Query: 78 EKYMQSCKKLWNSLHRD--IRDSQSLGAF 104
E+++ KLW+S D +RD S G F
Sbjct: 150 EEFVDVVYKLWDSWEDDAFVRDKAS-GVF 177
>gnl|CDD|149642 pfam08655, DASH_Ask1, DASH complex subunit Ask1. The DASH
complex is a ~10 subunit microtubule-binding complex
that is transferred to the kinetochore prior to
mitosis. In Saccharomyces cerevisiae DASH forms both
rings and spiral structures on microtubules in vitro.
Components of the DASH complex, including Dam1, Duo1,
Spc34, Dad1 and Ask1, are essential and connect the
centromere to the plus end of spindle microtubules.
Length = 66
Score = 24.5 bits (54), Expect = 8.4
Identities = 5/15 (33%), Positives = 11/15 (73%)
Query: 76 HLEKYMQSCKKLWNS 90
+E+Y + +K+W+S
Sbjct: 33 AVERYAEVSEKVWDS 47
>gnl|CDD|116940 pfam08359, TetR_C_4, YsiA-like protein, C-terminal region. The
members of this family are thought to be TetR-type
transcriptional regulators that bear particular
similarity to YsiA, a hypothetical protein expressed by
B. subtilis.
Length = 133
Score = 25.0 bits (55), Expect = 8.7
Identities = 19/66 (28%), Positives = 32/66 (48%), Gaps = 8/66 (12%)
Query: 67 VIQIEERRTHLE---KYMQSCKKLWNSLHRDIRDSQSLGAFKTSL-VKYLK----GTVKE 118
V Q+E R+++LE K + K + I + + G F+ L V+ + GT+ E
Sbjct: 46 VTQLELRQSNLELRQKINEVLKGYLTLIDEIIAEGKESGEFREELDVRLARQMIFGTLDE 105
Query: 119 TFSGWV 124
T + WV
Sbjct: 106 TVTNWV 111
>gnl|CDD|173547 PTZ00354, PTZ00354, alcohol dehydrogenase; Provisional.
Length = 334
Score = 25.8 bits (57), Expect = 8.7
Identities = 8/28 (28%), Positives = 11/28 (39%), Gaps = 1/28 (3%)
Query: 27 GEYHCSVRYKQLHNFNEQLKKLYGPENV 54
RY F ++KKL G + V
Sbjct: 185 AAIILI-RYPDEEGFAPKVKKLTGEKGV 211
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
0.318 0.136 0.418
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: 6,527,767
Number of extensions: 553142
Number of successful extensions: 568
Number of sequences better than 10.0: 1
Number of HSP's gapped: 552
Number of HSP's successfully gapped: 50
Length of query: 128
Length of database: 10,937,602
Length adjustment: 86
Effective length of query: 42
Effective length of database: 7,123,158
Effective search space: 299172636
Effective search space used: 299172636
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 (21.7 bits)
S2: 53 (24.2 bits)