RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy933
(330 letters)
>gnl|CDD|201353 pfam00625, Guanylate_kin, Guanylate kinase.
Length = 183
Score = 206 bits (526), Expect = 2e-66
Identities = 73/183 (39%), Positives = 110/183 (60%), Gaps = 7/183 (3%)
Query: 92 KRKTLVLLGAHGVGRRHIKNTLINKFPDKYAYPVPHTTRSPRSDEENGRAYYFISHDEMM 151
+R+ +VL G GVG+ HIK L++++P+K+ Y V HTTR PR E +G+ Y+F+S +EM
Sbjct: 1 QRRPIVLSGPSGVGKSHIKKALLDEYPEKFGYSVSHTTRPPRPGEVDGKDYHFVSKEEME 60
Query: 152 SDIAANQYLEYGTHEDAMYGTKLETIRRIHQEGKIAILDVEPQALKILRTGEFSPFVVFI 211
+DI+AN++LEY YGT E I +I + GKI ILDV+ Q +K LR E SP VFI
Sbjct: 61 NDISANEFLEYAEFNGNYYGTSKEAIEQIAESGKICILDVDIQGVKQLRKAELSPISVFI 120
Query: 212 AAPQLQNL-----SDYDGSLEKLAKESDILKSAYEHF--FDLTVVNNDIEETIGILEKAI 264
P L+ L EK+ K + + ++H+ FD +VN+D++E L++ +
Sbjct: 121 KPPSLKVLQRRLKRRGTEQEEKINKRMEAAEQEFQHYALFDYIIVNDDLDEAYKKLKEIL 180
Query: 265 EEL 267
E
Sbjct: 181 EAE 183
>gnl|CDD|214504 smart00072, GuKc, Guanylate kinase homologues. Active enzymes
catalyze ATP-dependent phosphorylation of GMP to GDP.
Structure resembles that of adenylate kinase. So-called
membrane-associated guanylate kinase homologues (MAGUKs)
do not possess guanylate kinase activities; instead at
least some possess protein-binding functions.
Length = 174
Score = 173 bits (441), Expect = 1e-53
Identities = 61/175 (34%), Positives = 95/175 (54%), Gaps = 9/175 (5%)
Query: 102 HGVGRRHIKNTLINKFPDKYAYPVPHTTRSPRSDEENGRAYYFISHDEMMSDIAANQYLE 161
GVG+ + LI + PD + V HTTR PR E NG Y+F+S +E DI + +LE
Sbjct: 1 SGVGKGTLLAELIQEIPDAFERVVSHTTRPPRPGEVNGVDYHFVSKEEFEDDIKSGLFLE 60
Query: 162 YGTHEDAMYGTKLETIRRIHQEGKIAILDVEPQALKILRTGEFSPFVVFIAAPQLQNL-- 219
+G +E YGT ETIR++ ++GK +LD++PQ +K LR + P V+FIA P + L
Sbjct: 61 WGEYEGNYYGTSKETIRQVAEKGKHCLLDIDPQGVKQLRKAQLYPIVIFIAPPSSEELER 120
Query: 220 ------SDYDGSLEKLAKESDILKSAYEHFFDLTVVNNDIEETIGILEKAIEELH 268
++ ++K + Y H FD +VN+D+E+ L++ +E
Sbjct: 121 RLRQRGTETSERIQKRLAAAQKEAQEY-HLFDYVIVNDDLEDAYEELKEILEAEQ 174
>gnl|CDD|238026 cd00071, GMPK, Guanosine monophosphate kinase (GMPK, EC 2.7.4.8),
also known as guanylate kinase (GKase), catalyzes the
reversible phosphoryl transfer from adenosine
triphosphate (ATP) to guanosine monophosphate (GMP) to
yield adenosine diphosphate (ADP) and guanosine
diphosphate (GDP). It plays an essential role in the
biosynthesis of guanosine triphosphate (GTP). This
enzyme is also important for the activation of some
antiviral and anticancer agents, such as acyclovir,
ganciclovir, carbovir, and thiopurines.
Length = 137
Score = 107 bits (269), Expect = 1e-28
Identities = 48/172 (27%), Positives = 72/172 (41%), Gaps = 37/172 (21%)
Query: 96 LVLLGAHGVGRRHIKNTLINKFPDKYAYPVPHTTRSPRSDEENGRAYYFISHDEMMSDIA 155
+VL G GVG+ + L+ +F + + V HTTR PR E +G Y+F+S +E I
Sbjct: 2 IVLSGPSGVGKSTLLKRLLEEFDPNFGFSVSHTTRKPRPGEVDGVDYHFVSKEEFERLIE 61
Query: 156 ANQYLEYGTHEDAMYGTKLETIRRIHQEGKIAILDVEPQALKILRTGEFSPFVVFIAAPQ 215
++LE+ YGT + EGKI IL+++ Q + ++ +FI P
Sbjct: 62 NGEFLEWAEFHGNYYGTSKAAVEEALAEGKIVILEIDVQGARQVKKSYPDAVSIFILPP- 120
Query: 216 LQNLSDYDGSLEKLAKESDILKSAYEHFFDLTVVNNDIEETIGILEKAIEEL 267
D +VN+D LEKA EEL
Sbjct: 121 -----------------------------DYVIVNDD-------LEKAYEEL 136
>gnl|CDD|213788 TIGR03263, guanyl_kin, guanylate kinase. Members of this family
are the enzyme guanylate kinase, also called GMP kinase.
This enzyme transfers a phosphate from ATP to GMP,
yielding ADP and GDP [Purines, pyrimidines, nucleosides,
and nucleotides, Nucleotide and nucleoside
interconversions].
Length = 179
Score = 102 bits (257), Expect = 2e-26
Identities = 51/182 (28%), Positives = 88/182 (48%), Gaps = 16/182 (8%)
Query: 96 LVLLGAHGVGRRHIKNTLINKFPDKYAYPVPHTTRSPRSDEENGRAYYFISHDEMMSDIA 155
+V+ G G G+ + L+ + P+ + + TTR PR E +G Y+F+S +E I
Sbjct: 3 IVISGPSGAGKSTLVKALLEEDPNLK-FSISATTRKPRPGEVDGVDYFFVSKEEFEEMIK 61
Query: 156 ANQYLEYGTHEDAMYGTKLETIRRIHQEGKIAILDVEPQ-ALKILRTGEFSPFV-VFIAA 213
A ++LE+ YGT + GK +L+++ Q A ++ + F V +FI
Sbjct: 62 AGEFLEWAEVHGNYYGTPKSPVEEALAAGKDVLLEIDVQGARQVKKK--FPDAVSIFILP 119
Query: 214 PQLQNL--------SDYDGSLEK-LAKESDILKSAYEHFFDLTVVNNDIEETIGILEKAI 264
P L+ L +D + +E+ LAK + A E FD +VN+D+E+ + L+ I
Sbjct: 120 PSLEELERRLRKRGTDSEEVIERRLAKAKKEIAHADE--FDYVIVNDDLEKAVEELKSII 177
Query: 265 EE 266
Sbjct: 178 LA 179
>gnl|CDD|223272 COG0194, Gmk, Guanylate kinase [Nucleotide transport and
metabolism].
Length = 191
Score = 101 bits (254), Expect = 9e-26
Identities = 54/190 (28%), Positives = 90/190 (47%), Gaps = 21/190 (11%)
Query: 92 KRKTLVLLGAHGVGRRHIKNTLINKF--PDKYAYPVPHTTRSPRSDEENGRAYYFISHDE 149
K +VL G GVG K+TL+ DK + V TTR PR E +G Y+F++ +E
Sbjct: 3 KGLLIVLSGPSGVG----KSTLVKALLEDDKLRFSVSATTRKPRPGEVDGVDYFFVTEEE 58
Query: 150 MMSDIAANQYLEYGTHEDAMYGTKLETIRRIHQEGKIAILDVEPQALKILRTGEFSPFV- 208
I +++LE+ + YGT E + + EGK ILD++ Q ++ V
Sbjct: 59 FEELIERDEFLEWAEYHGNYYGTSREPVEQALAEGKDVILDIDVQGALQVKKK-MPNAVS 117
Query: 209 VFIAAPQLQNLSDYDGSLEKLAKESDI-----LKSAYEHF-----FDLTVVNNDIEETIG 258
+FI P +L + + L+ +S+ L++A + FD +VN+D+E+ +
Sbjct: 118 IFILPP---SLEELERRLKGRGTDSEEVIARRLENAKKEISHADEFDYVIVNDDLEKALE 174
Query: 259 ILEKAIEELH 268
L+ I
Sbjct: 175 ELKSIILAER 184
>gnl|CDD|234719 PRK00300, gmk, guanylate kinase; Provisional.
Length = 205
Score = 91.3 bits (228), Expect = 6e-22
Identities = 49/185 (26%), Positives = 80/185 (43%), Gaps = 24/185 (12%)
Query: 96 LVLLGAHGVGRRHIKNTLIN---KFPDKYAYPVPHTTRSPRSDEENGRAYYFISHDEMMS 152
+VL G G G K+TL+ + V TTR+PR E +G Y+F+S +E
Sbjct: 8 IVLSGPSGAG----KSTLVKALLERDPNLQLSVSATTRAPRPGEVDGVDYFFVSKEEFEE 63
Query: 153 DIAANQYLEYGTHEDAMYGTKLETIRRIHQEGKIAILDVEPQ-ALKILRTGEFSPFV-VF 210
I ++LE+ YGT + GK +L+++ Q A ++ + V +F
Sbjct: 64 MIENGEFLEWAEVFGNYYGTPRSPVEEALAAGKDVLLEIDWQGARQVKKK--MPDAVSIF 121
Query: 211 IAAPQLQNLSDYDGSLEKLAKESD--I---LKSAYE-----HFFDLTVVNNDIEETIGIL 260
I P L+ L L +S+ I L A E +D +VN+D++ + L
Sbjct: 122 ILPPSLEELER---RLRGRGTDSEEVIARRLAKAREEIAHASEYDYVIVNDDLDTALEEL 178
Query: 261 EKAIE 265
+ I
Sbjct: 179 KAIIR 183
>gnl|CDD|215414 PLN02772, PLN02772, guanylate kinase.
Length = 398
Score = 93.7 bits (233), Expect = 2e-21
Identities = 49/179 (27%), Positives = 90/179 (50%), Gaps = 10/179 (5%)
Query: 94 KTLVLLGAHGVGRRHIKNTLINKFPDKYAYPVPHTTRSPRSDEENGRAYYFISHDEMMSD 153
K +V+ G GVG+ + + L+ +FP + + V HTTR+PR E++G Y+F M +
Sbjct: 136 KPIVISGPSGVGKGTLISMLMKEFPSMFGFSVSHTTRAPREMEKDGVHYHFTERSVMEKE 195
Query: 154 IAANQYLEYGTHEDAMYGTKLETIRRIHQEGKIAILDVEPQALKILRTGEFSPFVVFIAA 213
I ++LE+ + +YGT +E + + GK ILD++ Q + +R +FI
Sbjct: 196 IKDGKFLEFASVHGNLYGTSIEAVEVVTDSGKRCILDIDVQGARSVRASSLEAIFIFICP 255
Query: 214 PQLQNLSDY-----DGSLEKLAK-----ESDILKSAYEHFFDLTVVNNDIEETIGILEK 262
P ++ L + E++ K E+++ + FD + N+++EE L+K
Sbjct: 256 PSMEELEKRLRARGTETEEQIQKRLRNAEAELEQGKSSGIFDHILYNDNLEECYKNLKK 314
>gnl|CDD|173199 PRK14737, gmk, guanylate kinase; Provisional.
Length = 186
Score = 72.7 bits (178), Expect = 3e-15
Identities = 53/180 (29%), Positives = 91/180 (50%), Gaps = 11/180 (6%)
Query: 94 KTLVLLGAHGVGRRHIKNTLINKFPDKYAYPVPHTTRSPRSDEENGRAYYFISHDEMMSD 153
K ++ G G+ I L+ + PD + + TTR+PR +E G+ Y+F++ +E
Sbjct: 5 KLFIISSVAGGGKSTIIQALLEEHPDFL-FSISCTTRAPRPGDEEGKTYFFLTIEEFKKG 63
Query: 154 IAANQYLEYGTHEDAMYGTKLETIRRIHQEGKIAILDVEPQALKILRTGEFSPFV-VFIA 212
IA ++LE+ D YGT I +EG+ AI+D++ Q KI++ V +FI
Sbjct: 64 IADGEFLEWAEVHDNYYGTPKAFIEDAFKEGRSAIMDIDVQGAKIIKEKFPERIVTIFIE 123
Query: 213 APQ--------LQNLSDYDGSLEKLAKESDILKSAYEHFFDLTVVNNDIEETIGILEKAI 264
P + +D + S+EK E+ I++ + FD ++N+D+E+ I LE I
Sbjct: 124 PPSEEEWEERLIHRGTDSEESIEKRI-ENGIIELDEANEFDYKIINDDLEDAIADLEAII 182
>gnl|CDD|213014 cd12081, SH3_CASK, Src Homology 3 domain of
Calcium/calmodulin-dependent Serine protein Kinase.
CASK is a scaffolding protein that is highly expressed
in the mammalian nervous system and plays roles in
synaptic protein targeting, neural development, and
gene expression regulation. CASK interacts with many
different binding partners including parkin, neurexin,
syndecans, calcium channel proteins, caskin, among
others, to perform specific functions in different
subcellular locations. Disruption of the CASK gene in
mice results in neonatal lethality while mutations in
the human gene have been associated with X-linked
mental retardation. Drosophila CASK is associated with
both pre- and postsynaptic membranes and is crucial in
synaptic transmission and vesicle cycling. CASK
contains an N-terminal calmodulin-dependent kinase
(CaMK)-like domain, two L27 domains, followed by the
core of three domains characteristic of MAGUK
(membrane-associated guanylate kinase) proteins: PDZ,
SH3, and guanylate kinase (GuK). In addition, it also
contains the Hook (Protein 4.1 Binding) motif in
between the SH3 and GuK domains. The GuK domain in
MAGUK proteins is enzymatically inactive; instead, the
domain mediates protein-protein interactions and
associates intramolecularly with the SH3 domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 62
Score = 62.6 bits (152), Expect = 7e-13
Identities = 24/33 (72%), Positives = 28/33 (84%), Gaps = 1/33 (3%)
Query: 1 MFQIISKDDHNWWQARKDN-VAGSAGLIPSPEL 32
+ QIISKDDHNWWQA+ +N G+AGLIPSPEL
Sbjct: 30 ILQIISKDDHNWWQAKLENSKNGTAGLIPSPEL 62
>gnl|CDD|212968 cd12035, SH3_MPP1-like, Src Homology 3 domain of Membrane
Protein, Palmitoylated 1 (or MAGUK p55 subfamily member
1)-like proteins. This subfamily includes MPP1, CASK
(Calcium/calmodulin-dependent Serine protein Kinase),
Caenorhabditis elegans lin-2, and similar proteins.
MPP1 and CASK are scaffolding proteins from the MAGUK
(membrane-associated guanylate kinase) protein family,
which is characterized by the presence of a core of
three domains: PDZ, SH3, and guanylate kinase (GuK). In
addition, they also have the Hook (Protein 4.1 Binding)
motif in between the SH3 and GuK domains. The GuK
domain in MAGUK proteins is enzymatically inactive;
instead, the domain mediates protein-protein
interactions and associates intramolecularly with the
SH3 domain. CASK and lin-2 also contain an N-terminal
calmodulin-dependent kinase (CaMK)-like domain and two
L27 domains. MPP1 is ubiquitously-expressed and plays
roles in regulating neutrophil polarity, cell shape,
hair cell development, and neural development and
patterning of the retina. CASK is highly expressed in
the mammalian nervous system and plays roles in
synaptic protein targeting, neural development, and
gene expression regulation. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 62
Score = 61.3 bits (149), Expect = 2e-12
Identities = 24/31 (77%), Positives = 25/31 (80%), Gaps = 1/31 (3%)
Query: 3 QIISKDDHNWWQARKDNVA-GSAGLIPSPEL 32
QIISKDDHNWWQARK + AGLIPSPEL
Sbjct: 32 QIISKDDHNWWQARKPGASKEPAGLIPSPEL 62
>gnl|CDD|213013 cd12080, SH3_MPP1, Src Homology 3 domain of Membrane Protein,
Palmitoylated 1 (or MAGUK p55 subfamily member 1).
MPP1, also called 55 kDa erythrocyte membrane protein
(p55), is a ubiquitously-expressed scaffolding protein
that plays roles in regulating neutrophil polarity,
cell shape, hair cell development, and neural
development and patterning of the retina. It was
originally identified as an erythrocyte protein that
stabilizes the actin cytoskeleton to the plasma
membrane by forming a complex with 4.1R protein and
glycophorin C. MPP1 is one of seven vertebrate homologs
of the Drosophila Stardust protein, which is required
in establishing cell polarity, and it contains the
three domains characteristic of MAGUK
(membrane-associated guanylate kinase) proteins: PDZ,
SH3, and guanylate kinase (GuK). In addition, it also
contains the Hook (Protein 4.1 Binding) motif in
between the SH3 and GuK domains. The GuK domain in
MAGUK proteins is enzymatically inactive; instead, the
domain mediates protein-protein interactions and
associates intramolecularly with the SH3 domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 62
Score = 52.6 bits (126), Expect = 2e-09
Identities = 21/33 (63%), Positives = 25/33 (75%), Gaps = 1/33 (3%)
Query: 1 MFQIISKDDHNWWQAR-KDNVAGSAGLIPSPEL 32
+ QII+KDD NWWQ R + + SAGLIPSPEL
Sbjct: 30 IIQIINKDDSNWWQGRVEGSGEESAGLIPSPEL 62
>gnl|CDD|212796 cd11862, SH3_MPP, Src Homology 3 domain of Membrane Protein,
Palmitoylated (or MAGUK p55 subfamily member) proteins.
The MPP/p55 subfamily of MAGUK (membrane-associated
guanylate kinase) proteins includes at least eight
vertebrate members (MPP1-7 and CASK), four Drosophila
proteins (Stardust, Varicose, CASK and Skiff), and
other similar proteins; they all contain one each of
the core of three domains characteristic of MAGUK
proteins: PDZ, SH3, and guanylate kinase (GuK). In
addition, most members except for MPP1 contain
N-terminal L27 domains and some also contain a Hook
(Protein 4.1 Binding) motif in between the SH3 and GuK
domains. CASK has an additional calmodulin-dependent
kinase (CaMK)-like domain at the N-terminus. Members of
this subfamily are scaffolding proteins that play
important roles in regulating and establishing cell
polarity, cell adhesion, and synaptic targeting and
transmission, among others. The GuK domain in MAGUK
proteins is enzymatically inactive; instead, the domain
mediates protein-protein interactions and associates
intramolecularly with the SH3 domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 61
Score = 52.2 bits (126), Expect = 3e-09
Identities = 18/30 (60%), Positives = 23/30 (76%), Gaps = 1/30 (3%)
Query: 3 QIISKDDHNWWQARK-DNVAGSAGLIPSPE 31
QI+++DD NWWQARK + G AGLIPS +
Sbjct: 32 QIVNQDDPNWWQARKVGDPNGRAGLIPSQD 61
>gnl|CDD|237809 PRK14738, gmk, guanylate kinase; Provisional.
Length = 206
Score = 50.1 bits (120), Expect = 2e-07
Identities = 47/180 (26%), Positives = 79/180 (43%), Gaps = 26/180 (14%)
Query: 96 LVLLGAHGVGRRHIKNTLIN-----KFPDKYAYPVPHTTRSPRSDEENGRAYYFISHDEM 150
+V+ G GVG K+ ++ K P + + V TTR R E +G Y+F++ +E
Sbjct: 16 VVISGPSGVG----KDAVLARMRERKLP--FHFVVTATTRPKRPGEIDGVDYHFVTPEEF 69
Query: 151 MSDIAANQYLEYGTHEDAMYGTKLETIRRIHQEGKIAILDVEPQ-ALKILRTGEFSPFVV 209
I+ N+ LE+ YG +R+ G+ I+ V+ Q A I R + F +
Sbjct: 70 REMISQNELLEWAEVYGNYYGVPKAPVRQALASGRDVIVKVDVQGAASIKRLVPEAVF-I 128
Query: 210 FIAAPQLQNLS---------DYDGSLEKLAKESDILKSAYEHFFDLTVVN--NDIEETIG 258
F+A P + L+ + +LA L+ E FD VVN + ++E +
Sbjct: 129 FLAPPSMDELTRRLELRRTESPEELERRLATAPLELEQLPE--FDYVVVNPEDRLDEAVA 186
>gnl|CDD|212970 cd12037, SH3_MPP2, Src Homology 3 domain of Membrane Protein,
Palmitoylated 2 (or MAGUK p55 subfamily member 2).
MPP2 is a scaffolding protein that interacts with the
non-receptor tyrosine kinase c-Src in epithelial cells
to negatively regulate its activity and morphological
function. It is one of seven vertebrate homologs of the
Drosophila Stardust protein, which is required in
establishing cell polarity, and it contains two L27
domains followed by the core of three domains
characteristic of MAGUK (membrane-associated guanylate
kinase) proteins: PDZ, SH3, and guanylate kinase (GuK).
In addition, it also contains the Hook (Protein 4.1
Binding) motif in between the SH3 and GuK domains. The
GuK domain in MAGUK proteins is enzymatically inactive;
instead, the domain mediates protein-protein
interactions and associates intramolecularly with the
SH3 domain. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 59
Score = 38.4 bits (89), Expect = 2e-04
Identities = 16/29 (55%), Positives = 21/29 (72%), Gaps = 1/29 (3%)
Query: 1 MFQIISKDDHNWWQARKDNVAGSAGLIPS 29
+ QI++++D NWWQA GSAGLIPS
Sbjct: 30 LLQIVNQEDPNWWQACHVE-GGSAGLIPS 57
>gnl|CDD|212971 cd12038, SH3_MPP6, Src Homology 3 domain of Membrane Protein,
Palmitoylated 6 (or MAGUK p55 subfamily member 6).
MPP6, also called Veli-associated MAGUK 1 (VAM-1) or
PALS2, is a scaffolding protein that binds to Veli-1, a
homolog of Caenorhabditis Lin-7. It is one of seven
vertebrate homologs of the Drosophila Stardust protein,
which is required in establishing cell polarity, and it
contains two L27 domains followed by the core of three
domains characteristic of MAGUK (membrane-associated
guanylate kinase) proteins: PDZ, SH3, and guanylate
kinase (GuK). In addition, it also contains the Hook
(Protein 4.1 Binding) motif in between the SH3 and GuK
domains. The GuK domain in MAGUK proteins is
enzymatically inactive; instead, the domain mediates
protein-protein interactions and associates
intramolecularly with the SH3 domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 61
Score = 38.5 bits (89), Expect = 3e-04
Identities = 16/29 (55%), Positives = 21/29 (72%)
Query: 1 MFQIISKDDHNWWQARKDNVAGSAGLIPS 29
+ QI++++D NWWQA GSAGLIPS
Sbjct: 30 ILQIVNREDPNWWQASHVKEGGSAGLIPS 58
>gnl|CDD|212967 cd12034, SH3_MPP4, Src Homology 3 domain of Membrane Protein,
Palmitoylated 4 (or MAGUK p55 subfamily member 4).
MPP4, also called Disks Large homolog 6 (DLG6) or
Amyotrophic lateral sclerosis 2 chromosomal region
candidate gene 5 protein (ALS2CR5), is a
retina-specific scaffolding protein that plays a role
in organizing presynaptic protein complexes in the
photoreceptor synapse, where it localizes to the plasma
membrane. It is required in the proper localization of
calcium ATPases and for maintenance of calcium
homeostasis. MPP4 is one of seven vertebrate homologs
of the Drosophila Stardust protein, which is required
in establishing cell polarity, and it contains two L27
domains followed by the core of three domains
characteristic of MAGUK (membrane-associated guanylate
kinase) proteins: PDZ, SH3, and guanylate kinase (GuK).
The GuK domain in MAGUK proteins is enzymatically
inactive; instead, the domain mediates protein-protein
interactions and associates intramolecularly with the
SH3 domain. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 61
Score = 37.6 bits (87), Expect = 5e-04
Identities = 15/30 (50%), Positives = 21/30 (70%), Gaps = 1/30 (3%)
Query: 1 MFQIISKDDHNWWQARKDNVAGS-AGLIPS 29
+ QI+ ++D WWQARK + + AGLIPS
Sbjct: 30 ILQIVDQNDSLWWQARKLSDLAACAGLIPS 59
>gnl|CDD|212969 cd12036, SH3_MPP5, Src Homology 3 domain of Membrane Protein,
Palmitoylated 5 (or MAGUK p55 subfamily member 5).
MPP5, also called PALS1 (Protein associated with Lin7)
or Nagie oko protein in zebrafish or Stardust in
Drosophila, is a scaffolding protein which associates
with Crumbs homolog 1 (CRB1), CRB2, or CRB3 through its
PDZ domain and with PALS1-associated tight junction
protein (PATJ) or multi-PDZ domain protein 1 (MUPP1)
through its L27 domain. The resulting tri-protein
complexes are core proteins of the Crumb complex, which
localizes at tight junctions or subapical regions, and
is involved in the maintenance of apical-basal polarity
in epithelial cells and the morphogenesis and function
of photoreceptor cells. MPP5 is critical for the proper
stratification of the retina and is also expressed in T
lymphocytes where it is important for TCR-mediated
activation of NFkB. Drosophila Stardust exists in
several isoforms, some of which show opposing functions
in photoreceptor cells, which suggests that the
relative ratio of different Crumbs complexes regulates
photoreceptor homeostasis. MPP5 contains two L27
domains followed by the core of three domains
characteristic of MAGUK (membrane-associated guanylate
kinase) proteins: PDZ, SH3, and guanylate kinase (GuK).
In addition, it also contains the Hook (Protein 4.1
Binding) motif in between the SH3 and GuK domains. The
GuK domain in MAGUK proteins is enzymatically inactive;
instead, the domain mediates protein-protein
interactions and associates intramolecularly with the
SH3 domain. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 63
Score = 37.4 bits (87), Expect = 6e-04
Identities = 14/31 (45%), Positives = 20/31 (64%), Gaps = 3/31 (9%)
Query: 4 IISKDDHNWWQARKD---NVAGSAGLIPSPE 31
+IS++D NWWQA ++ + AGLIPS
Sbjct: 33 VISQEDPNWWQAYREGEEDNQSLAGLIPSKS 63
>gnl|CDD|212966 cd12033, SH3_MPP7, Src Homology 3 domain of Membrane Protein,
Palmitoylated 7 (or MAGUK p55 subfamily member 7).
MPP7 is a scaffolding protein that binds to DLG1 and
promotes tight junction formation and epithelial cell
polarity. Mutations in the MPP7 gene may be associated
with the pathogenesis of diabetes and extreme bone
mineral density. It is one of seven vertebrate homologs
of the Drosophila Stardust protein, which is required
in establishing cell polarity, and it contains two L27
domains followed by the core of three domains
characteristic of MAGUK (membrane-associated guanylate
kinase) proteins: PDZ, SH3, and guanylate kinase (GuK).
The GuK domain in MAGUK proteins is enzymatically
inactive; instead, the domain mediates protein-protein
interactions and associates intramolecularly with the
SH3 domain. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 61
Score = 35.4 bits (81), Expect = 0.003
Identities = 16/30 (53%), Positives = 21/30 (70%), Gaps = 1/30 (3%)
Query: 1 MFQIISKDDHNWWQARKDNVAG-SAGLIPS 29
+ QI+S+DD WWQA+ + A AGLIPS
Sbjct: 30 ILQIMSQDDATWWQAKHEGDANPRAGLIPS 59
>gnl|CDD|212692 cd11758, SH3_CRK_N, N-terminal Src Homology 3 domain of Ct10
Regulator of Kinase adaptor proteins. CRK adaptor
proteins consists of SH2 and SH3 domains, which bind
tyrosine-phosphorylated peptides and proline-rich
motifs, respectively. They function downstream of
protein tyrosine kinases in many signaling pathways
started by various extracellular signals, including
growth and differentiation factors. Cellular CRK
(c-CRK) contains a single SH2 domain, followed by
N-terminal and C-terminal SH3 domains. It is involved
in the regulation of many cellular processes including
cell growth, motility, adhesion, and apoptosis. CRK has
been implicated in the malignancy of various human
cancers. The N-terminal SH3 domain of CRK binds a
number of target proteins including DOCK180, C3G, SOS,
and cABL. The CRK family includes two alternatively
spliced protein forms, CRKI and CRKII, that are
expressed by the CRK gene, and the CRK-like (CRKL)
protein, which is expressed by a distinct gene (CRKL).
SH3 domains are protein interaction domains that bind
to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 33.5 bits (77), Expect = 0.010
Identities = 12/32 (37%), Positives = 18/32 (56%), Gaps = 2/32 (6%)
Query: 3 QIISKDDHNWWQARKDNVAGSAGLIPSPELQE 34
+I K + WW AR N G G+IP P +++
Sbjct: 26 TVIRKPEEQWWNAR--NSEGKTGMIPVPYVEK 55
>gnl|CDD|215659 pfam00018, SH3_1, SH3 domain. SH3 (Src homology 3) domains are
often indicative of a protein involved in signal
transduction related to cytoskeletal organisation.
First described in the Src cytoplasmic tyrosine kinase.
The structure is a partly opened beta barrel.
Length = 47
Score = 32.5 bits (75), Expect = 0.021
Identities = 11/29 (37%), Positives = 15/29 (51%), Gaps = 2/29 (6%)
Query: 1 MFQIISKDDHNWWQARKDNVAGSAGLIPS 29
+ ++ K D WW+ R G GLIPS
Sbjct: 21 IIIVLEKSDDGWWKGRLKG--GKEGLIPS 47
>gnl|CDD|212972 cd12039, SH3_MPP3, Src Homology 3 domain of Membrane Protein,
Palmitoylated 3 (or MAGUK p55 subfamily member 3).
MPP3 is a scaffolding protein that colocalizes with
MPP5 and CRB1 at the subdpical region adjacent to
adherens junctions and may function in photoreceptor
polarity. It interacts with some nectins and regulates
their trafficking and processing. Nectins are cell-cell
adhesion proteins involved in the establishment
apical-basal polarity at cell adhesion sites. It is one
of seven vertebrate homologs of the Drosophila Stardust
protein, which is required in establishing cell
polarity, and it contains two L27 domains followed by
the core of three domains characteristic of MAGUK
(membrane-associated guanylate kinase) proteins: PDZ,
SH3, and guanylate kinase (GuK). The GuK domain in
MAGUK proteins is enzymatically inactive; instead, the
domain mediates protein-protein interactions and
associates intramolecularly with the SH3 domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 62
Score = 33.0 bits (75), Expect = 0.022
Identities = 13/30 (43%), Positives = 21/30 (70%), Gaps = 1/30 (3%)
Query: 1 MFQIISKDDHNWWQARK-DNVAGSAGLIPS 29
+ +++S+DD WWQA++ + AGLIPS
Sbjct: 30 ILEVVSQDDPTWWQAKRVGDTNLRAGLIPS 59
>gnl|CDD|214620 smart00326, SH3, Src homology 3 domains. Src homology 3 (SH3)
domains bind to target proteins through sequences
containing proline and hydrophobic amino acids.
Pro-containing polypeptides may bind to SH3 domains in
2 different binding orientations.
Length = 56
Score = 32.5 bits (75), Expect = 0.027
Identities = 10/29 (34%), Positives = 14/29 (48%), Gaps = 2/29 (6%)
Query: 1 MFQIISKDDHNWWQARKDNVAGSAGLIPS 29
+ ++ K D WW+ R G GL PS
Sbjct: 26 IITVLEKSDDGWWKGRLGR--GKEGLFPS 52
>gnl|CDD|219499 pfam07653, SH3_2, Variant SH3 domain. SH3 (Src homology 3)
domains are often indicative of a protein involved in
signal transduction related to cytoskeletal
organisation. First described in the Src cytoplasmic
tyrosine kinase. The structure is a partly opened beta
barrel.
Length = 53
Score = 31.7 bits (73), Expect = 0.042
Identities = 11/33 (33%), Positives = 20/33 (60%), Gaps = 3/33 (9%)
Query: 2 FQIISKDDHNWWQARKDNVAGSAGLIPSPELQE 34
+++ KDD+ WW+ + G GL+PS ++E
Sbjct: 24 VKVLDKDDNGWWEGERG---GRRGLVPSSYVEE 53
>gnl|CDD|212701 cd11767, SH3_Nck_3, Third Src Homology 3 domain of Nck adaptor
proteins. This group contains the third SH3 domain of
Nck, the first SH3 domain of Caenorhabditis elegans
Ced-2 (Cell death abnormality protein 2), and similar
domains. Nck adaptor proteins regulate actin
cytoskeleton dynamics by linking proline-rich effector
molecules to protein tyrosine kinases and
phosphorylated signaling intermediates. They contain
three SH3 domains and a C-terminal SH2 domain. They
function downstream of the PDGFbeta receptor and are
involved in Rho GTPase signaling and actin dynamics.
Vertebrates contain two Nck adaptor proteins: Nck1
(also called Nckalpha) and Nck2 (also called Nckbeta or
Growth factor receptor-bound protein 4, Grb4), which
show partly overlapping functions but also bind
distinct targets. Their SH3 domains are involved in
recruiting downstream effector molecules, such as the
N-WASP/Arp2/3 complex, which when activated induces
actin polymerization that results in the production of
pedestals, or protrusions of the plasma membrane. The
third SH3 domain of Nck appears to prefer ligands with
a PxAPxR motif. SH3 domains are protein interaction
domains that usually bind to proline-rich ligands with
moderate affinity and selectivity, preferentially a
PxxP motif. Ced-2 is a cell corpse engulfment protein
that interacts with Ced-5 in a pathway that regulates
the activation of Ced-10, a Rac small GTPase.
Length = 56
Score = 30.7 bits (70), Expect = 0.11
Identities = 14/36 (38%), Positives = 21/36 (58%), Gaps = 4/36 (11%)
Query: 1 MFQIISK--DDHNWWQARKDNVAGSAGLIPSPELQE 34
+II K DD +WW+AR N G+ GL+P ++
Sbjct: 23 RLEIIEKPEDDPDWWKAR--NALGTTGLVPRNYVEV 56
>gnl|CDD|212789 cd11855, SH3_Sho1p, Src homology 3 domain of High osmolarity
signaling protein Sho1p. Sho1p (or Sho1), also called
SSU81 (Suppressor of SUA8-1 mutation), is a yeast
membrane protein that regulates adaptation to high salt
conditions by activating the HOG (high-osmolarity
glycerol) pathway. High salt concentrations lead to the
localization to the membrane of the MAPKK Pbs2, which
is then activated by the MAPKK Ste11 and in turn,
activates the MAPK Hog1. Pbs2 is localized to the
membrane though the interaction of its PxxP motif with
the SH3 domain of Sho1p. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 30.5 bits (69), Expect = 0.11
Identities = 14/28 (50%), Positives = 15/28 (53%), Gaps = 3/28 (10%)
Query: 7 KDDH-NWWQARKDNVAGSAGLIPSPELQ 33
D WWQARK N G G+ PS LQ
Sbjct: 29 SDTSGKWWQARKSN--GETGICPSNYLQ 54
>gnl|CDD|212940 cd12007, SH3_Yes, Src homology 3 domain of Yes Protein Tyrosine
Kinase. Yes (or c-Yes) is a member of the Src
subfamily of proteins, which are cytoplasmic (or
non-receptor) PTKs. c-Yes kinase is the cellular
homolog of the oncogenic protein (v-Yes) encoded by the
Yamaguchi 73 and Esh sarcoma viruses. It displays
functional overlap with other Src subfamily members,
particularly Src. It also shows some unique functions
such as binding to occludins, transmembrane proteins
that regulate extracellular interactions in tight
junctions. Yes also associates with a number of
proteins in different cell types that Src does not
interact with, like JAK2 and gp130 in pre-adipocytes,
and Pyk2 in treated pulmonary vein endothelial cells.
Although the biological function of Yes remains
unclear, it appears to have a role in regulating
cell-cell interactions and vesicle trafficking in
polarized cells. Src kinases contain an N-terminal SH4
domain with a myristoylation site, followed by SH3 and
SH2 domains, a tyr kinase domain, and a regulatory
C-terminal region containing a conserved tyr. They are
activated by autophosphorylation at the tyr kinase
domain, but are negatively regulated by phosphorylation
at the C-terminal tyr by Csk (C-terminal Src Kinase).
The SH3 domain of Src kinases contributes to substrate
recruitment by binding adaptor proteins/substrates, and
regulation of kinase activity through an intramolecular
interaction. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 58
Score = 30.8 bits (69), Expect = 0.12
Identities = 13/28 (46%), Positives = 17/28 (60%), Gaps = 1/28 (3%)
Query: 2 FQIISKDDHNWWQARKDNVAGSAGLIPS 29
FQII+ + +WW+AR G G IPS
Sbjct: 25 FQIINNTEGDWWEARSIA-TGKNGYIPS 51
>gnl|CDD|212690 cd00174, SH3, Src Homology 3 domain superfamily. Src Homology 3
(SH3) domains are protein interaction domains that bind
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. Thus, they
are referred to as proline-recognition domains (PRDs).
SH3 domains are less selective and show more diverse
specificity compared to other PRDs. They have been
shown to bind peptide sequences that lack the PxxP
motif; examples include the PxxDY motif of Eps8 and the
RKxxYxxY sequence in SKAP55. SH3 domain containing
proteins play versatile and diverse roles in the cell,
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies, among others. Many members of this
superfamily are adaptor proteins that associate with a
number of protein partners, facilitating complex
formation and signal transduction.
Length = 51
Score = 30.5 bits (70), Expect = 0.13
Identities = 9/29 (31%), Positives = 15/29 (51%), Gaps = 2/29 (6%)
Query: 1 MFQIISKDDHNWWQARKDNVAGSAGLIPS 29
+ ++ KDD WW+ + G GL P+
Sbjct: 23 IITVLEKDDDGWWEGELNG--GREGLFPA 49
>gnl|CDD|236461 PRK09302, PRK09302, circadian clock protein KaiC; Reviewed.
Length = 509
Score = 33.3 bits (77), Expect = 0.19
Identities = 14/62 (22%), Positives = 26/62 (41%), Gaps = 12/62 (19%)
Query: 144 FISHDEMMSDIAANQYLEYGTHEDAMYGTKLETIRRIHQEGKIAILDVEPQALKILRTGE 203
F++ +E DI N + + ++++ EGK+ ILD P + GE
Sbjct: 65 FVTFEESPEDIIRN-----------VASFGWD-LQKLIDEGKLFILDASPDPSEQEEAGE 112
Query: 204 FS 205
+
Sbjct: 113 YD 114
>gnl|CDD|212774 cd11840, SH3_Intersectin_5, Fifth Src homology 3 domain (or SH3E)
of Intersectin. Intersectins (ITSNs) are adaptor
proteins that function in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction.
They are essential for initiating clathrin-coated pit
formation. They bind to many proteins through their
multidomain structure and facilitate the assembly of
multimeric complexes. Vertebrates contain two ITSN
proteins, ITSN1 and ITSN2, which exist in alternatively
spliced short and long isoforms. The short isoforms
contain two Eps15 homology domains (EH1 and EH2), a
coiled-coil region and five SH3 domains (SH3A-E), while
the long isoforms, in addition, contain RhoGEF (also
called Dbl-homologous or DH), Pleckstrin homology (PH)
and C2 domains. ITSN1 and ITSN2 are both widely
expressed, with variations depending on tissue type and
stage of development. The fifth SH3 domain (or SH3E) of
ITSN1 has been shown to bind many protein partners
including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2,
N-WASP, and synaptojanin-1, among others. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 28.9 bits (65), Expect = 0.43
Identities = 11/29 (37%), Positives = 17/29 (58%), Gaps = 3/29 (10%)
Query: 1 MFQIISKDDHNWWQARKDNVAGSAGLIPS 29
+ ++SKDD +WW + + G GL PS
Sbjct: 23 IINVLSKDDPDWW---RGELNGQTGLFPS 48
>gnl|CDD|212706 cd11772, SH3_OSTF1, Src Homology 3 domain of metazoan osteoclast
stimulating factor 1. OSTF1, also named OSF or SH3P2,
is a signaling protein containing SH3 and
ankyrin-repeat domains. It acts through a Src-related
pathway to enhance the formation of osteoclasts and
bone resorption. It also acts as a negative regulator
of cell motility. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 28.8 bits (65), Expect = 0.44
Identities = 13/26 (50%), Positives = 14/26 (53%), Gaps = 3/26 (11%)
Query: 4 IISKDDHNWWQARKDNVAGSAGLIPS 29
I K D NWW+A G GLIPS
Sbjct: 26 ISDKSDPNWWKAT---CGGKTGLIPS 48
>gnl|CDD|219345 pfam07243, Phlebovirus_G1, Phlebovirus glycoprotein G1. This
family consists of several Phlebovirus glycoprotein G1
sequences. Members of the Bunyaviridae family acquire an
envelope by budding through the lipid bilayer of the
Golgi complex. The budding compartment is thought to be
determined by the accumulation of the two heterodimeric
membrane glycoproteins G1 and G2 in the Golgi.
Length = 527
Score = 31.7 bits (72), Expect = 0.49
Identities = 23/99 (23%), Positives = 39/99 (39%), Gaps = 9/99 (9%)
Query: 45 TKHEQVNCSIFGRKKKLYKDKYLAKHNAVFDQLDLVTYEEV---------VKLPSFKRKT 95
T E V +F K K+Y ++ ++ V ++ V YE KL S K ++
Sbjct: 180 TNFEVVPFIVFKNKGKMYIEQMKLRNREVLNEDSFVCYEHKGQDSSSGSHRKLKSVKVES 239
Query: 96 LVLLGAHGVGRRHIKNTLINKFPDKYAYPVPHTTRSPRS 134
+ + +K+P + AYP H +P S
Sbjct: 240 CKGVDTSSAKKCSGDEYFCSKYPCETAYPEAHCIHAPGS 278
>gnl|CDD|212838 cd11905, SH3_Tec, Src Homology 3 domain of Tec (Tyrosine kinase
expressed in hepatocellular carcinoma). Tec is a
cytoplasmic (or nonreceptor) tyr kinase containing Src
homology protein interaction domains (SH3, SH2)
N-terminal to the catalytic tyr kinase domain. It also
contains an N-terminal pleckstrin homology (PH) domain,
which binds the products of PI3K and allows membrane
recruitment and activation, and the Tec homology (TH)
domain, which contains proline-rich and zinc-binding
regions. It is more widely-expressed than other Tec
subfamily kinases. Tec is found in endothelial cells,
both B- and T-cells, and a variety of myeloid cells
including mast cells, erythroid cells, platelets,
macrophages and neutrophils. Tec is a key component of
T-cell receptor (TCR) signaling, and is important in
TCR-stimulated proliferation, IL-2 production and
phospholipase C-gamma1 activation. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 56
Score = 29.0 bits (65), Expect = 0.51
Identities = 12/26 (46%), Positives = 17/26 (65%), Gaps = 2/26 (7%)
Query: 4 IISKDDHNWWQARKDNVAGSAGLIPS 29
I+ K+D +WW+AR + G G IPS
Sbjct: 27 ILEKNDVHWWKAR--DKYGKEGYIPS 50
>gnl|CDD|212839 cd11906, SH3_BTK, Src Homology 3 domain of Bruton's tyrosine
kinase. BTK is a cytoplasmic (or nonreceptor) tyr
kinase containing Src homology protein interaction
domains (SH3, SH2) N-terminal to the catalytic tyr
kinase domain. It also contains an N-terminal
pleckstrin homology (PH) domain, which binds the
products of PI3K and allows membrane recruitment and
activation, and the Tec homology (TH) domain with
proline-rich and zinc-binding regions. Btk is expressed
in B-cells, and a variety of myeloid cells including
mast cells, platelets, neutrophils, and dendrictic
cells. It interacts with a variety of partners, from
cytosolic proteins to nuclear transcription factors,
suggesting a diversity of functions. Stimulation of a
diverse array of cell surface receptors, including
antigen engagement of the B-cell receptor (BCR), leads
to PH-mediated membrane translocation of Btk and
subsequent phosphorylation by Src kinase and
activation. Btk plays an important role in the life
cycle of B-cells including their development,
differentiation, proliferation, survival, and
apoptosis. Mutations in Btk cause the primary
immunodeficiency disease, X-linked agammaglobulinaemia
(XLA) in humans. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 28.6 bits (64), Expect = 0.53
Identities = 11/26 (42%), Positives = 15/26 (57%), Gaps = 2/26 (7%)
Query: 4 IISKDDHNWWQARKDNVAGSAGLIPS 29
I+ + + WW+AR N G G IPS
Sbjct: 27 ILEESNLPWWRARDKN--GREGYIPS 50
>gnl|CDD|212939 cd12006, SH3_Fyn_Yrk, Src homology 3 domain of Fyn and Yrk
Protein Tyrosine Kinases. Fyn and Yrk (Yes-related
kinase) are members of the Src subfamily of proteins,
which are cytoplasmic (or non-receptor) PTKs. Fyn,
together with Lck, plays a critical role in T-cell
signal transduction by phosphorylating ITAM
(immunoreceptor tyr activation motif) sequences on
T-cell receptors, ultimately leading to the
proliferation and differentiation of T-cells. In
addition, Fyn is involved in the myelination of
neurons, and is implicated in Alzheimer's and
Parkinson's diseases. Yrk has been detected only in
chickens. It is primarily found in neuronal and
epithelial cells and in macrophages. It may play a role
in inflammation and in response to injury. Src kinases
contain an N-terminal SH4 domain with a myristoylation
site, followed by SH3 and SH2 domains, a tyr kinase
domain, and a regulatory C-terminal region containing a
conserved tyr. They are activated by
autophosphorylation at the tyr kinase domain, but are
negatively regulated by phosphorylation at the
C-terminal tyr by Csk (C-terminal Src Kinase). The SH3
domain of Src kinases contributes to substrate
recruitment by binding adaptor proteins/substrates, and
regulation of kinase activity through an intramolecular
interaction. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 56
Score = 28.9 bits (64), Expect = 0.61
Identities = 11/28 (39%), Positives = 17/28 (60%), Gaps = 1/28 (3%)
Query: 2 FQIISKDDHNWWQARKDNVAGSAGLIPS 29
FQI++ + +WW+AR + G IPS
Sbjct: 25 FQILNSSEGDWWEARSLTTGET-GYIPS 51
>gnl|CDD|212703 cd11769, SH3_CSK, Src Homology 3 domain of C-terminal Src kinase.
CSK is a cytoplasmic (or nonreceptor) tyr kinase
containing the Src homology domains, SH3 and SH2,
N-terminal to the catalytic tyr kinase domain. They
negatively regulate the activity of Src kinases that
are anchored to the plasma membrane. To inhibit Src
kinases, CSK is translocated to the membrane via
binding to specific transmembrane proteins, G-proteins,
or adaptor proteins near the membrane. CSK catalyzes
the tyr phosphorylation of the regulatory C-terminal
tail of Src kinases, resulting in their inactivation.
It is expressed in a wide variety of tissues and plays
a role, as a regulator of Src, in cell proliferation,
survival, and differentiation, and consequently, in
cancer development and progression. In addition, CSK
also shows Src-independent functions. It is a critical
component in G-protein signaling, and plays a role in
cytoskeletal reorganization and cell migration. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 28.4 bits (64), Expect = 0.64
Identities = 9/20 (45%), Positives = 13/20 (65%), Gaps = 2/20 (10%)
Query: 9 DHNWWQARKDNVAGSAGLIP 28
D NW++A+ N G G+IP
Sbjct: 34 DPNWYKAK--NKDGREGMIP 51
>gnl|CDD|212795 cd11861, SH3_DLG-like, Src Homology 3 domain of Disks large
homolog proteins. The DLG-like proteins are
scaffolding proteins that cluster at synapses and are
also called PSD (postsynaptic density)-95 proteins or
SAPs (synapse-associated proteins). They play important
roles in synaptic development and plasticity, cell
polarity, migration and proliferation. They are members
of the MAGUK (membrane-associated guanylate kinase)
protein family, which is characterized by the presence
of a core of three domains: PDZ, SH3, and guanylate
kinase (GuK). The GuK domain in MAGUK proteins is
enzymatically inactive; instead, the domain mediates
protein-protein interactions and associates
intramolecularly with the SH3 domain. DLG-like proteins
contain three PDZ domains and varying N-terminal
regions. All DLG proteins exist as
alternatively-spliced isoforms. Vertebrates contain
four DLG proteins from different genes, called DLG1-4.
DLG4 and DLG2 are found predominantly at postsynaptic
sites and they mediate surface ion channel and receptor
clustering. DLG3 is found axons and some presynaptic
terminals. DLG1 interacts with AMPA-type glutamate
receptors and is critical in their maturation and
delivery to synapses. The SH3 domain of DLG4 binds and
clusters the kainate subgroup of glutamate receptors
via two proline-rich sequences in their C-terminal
tail. It also binds AKAP79/150 (A-kinase anchoring
protein). SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 61
Score = 28.4 bits (64), Expect = 0.69
Identities = 10/29 (34%), Positives = 15/29 (51%), Gaps = 3/29 (10%)
Query: 4 IISKDDHNWWQARK---DNVAGSAGLIPS 29
+ + D WWQAR+ + G+IPS
Sbjct: 31 VTNASDDEWWQARRVTPNGEEEEVGVIPS 59
>gnl|CDD|220029 pfam08812, YtxC, YtxC-like family. This family includes proteins
similar to B. subtilis YtxC an uncharacterized protein.
Length = 220
Score = 30.6 bits (70), Expect = 0.86
Identities = 25/139 (17%), Positives = 44/139 (31%), Gaps = 49/139 (35%)
Query: 141 AYYFISH--DEMMSDIAANQYLEYGTHEDAMYGTKLETIRRIHQEGKIAILDVEPQALKI 198
A + + H E++ I Y + E +I + A I
Sbjct: 10 ADFIVEHKEKELIRKIIEENY----------FFLDQEEKEQILEI-----------AHSI 48
Query: 199 LRTGEFSPFVVFIAAPQLQNLSDYDGSLEKLAKESDILKSAYEHFFDLTVVNND------ 252
L+ D + KL +++ I+K E + +N D
Sbjct: 49 LK----------------GERKDLPSEIYKLNRKNLIIKKILEFLEENNEINIDGFVTFR 92
Query: 253 ----IEETIGILEKAIEEL 267
+EE I+EKA++E
Sbjct: 93 LKDYLEELEEIVEKAVDEY 111
>gnl|CDD|212702 cd11768, SH3_Tec_like, Src Homology 3 domain of Tec-like Protein
Tyrosine Kinases. The Tec (Tyrosine kinase expressed
in hepatocellular carcinoma) subfamily is composed of
Tec, Btk, Bmx (Etk), Itk (Tsk, Emt), Rlk (Txk), and
similar proteins. They are cytoplasmic (or nonreceptor)
tyr kinases containing Src homology protein interaction
domains (SH3, SH2) N-terminal to the catalytic tyr
kinase domain. Most Tec subfamily members (except Rlk)
also contain an N-terminal pleckstrin homology (PH)
domain, which binds the products of PI3K and allows
membrane recruitment and activation. In addition, some
members contain the Tec homology (TH) domain, which
contains proline-rich and zinc-binding regions. Tec
kinases are expressed mainly by haematopoietic cells,
although Tec and Bmx are also found in endothelial
cells. B-cells express Btk and Tec, while T-cells
express Itk, Txk, and Tec. Collectively, Tec kinases
are expressed in a variety of myeloid cells such as
mast cells, platelets, macrophages, and dendritic
cells. Each Tec kinase shows a distinct cell-type
pattern of expression. The function of Tec kinases in
lymphoid cells have been studied extensively. They play
important roles in the development, differentiation,
maturation, regulation, survival, and function of
B-cells and T-cells. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 54
Score = 28.0 bits (63), Expect = 0.92
Identities = 9/26 (34%), Positives = 16/26 (61%), Gaps = 2/26 (7%)
Query: 4 IISKDDHNWWQARKDNVAGSAGLIPS 29
++ + +WW+AR + G+ G IPS
Sbjct: 26 VLDDSNEHWWRAR--DKNGNEGYIPS 49
>gnl|CDD|212963 cd12030, SH3_DLG4, Src Homology 3 domain of Disks Large homolog
4. DLG4, also called postsynaptic density-95 (PSD95)
or synapse-associated protein 90 (SAP90), is a
scaffolding protein that clusters at synapses and plays
an important role in synaptic development and
plasticity. It is responsible for the membrane
clustering and retention of many transporters and
receptors such as potassium channels and PMCA4b, a
P-type ion transport ATPase, among others. DLG4 is a
member of the MAGUK (membrane-associated guanylate
kinase) protein family, which is characterized by the
presence of a core of three domains: PDZ, SH3, and
guanylate kinase (GuK). The GuK domain in MAGUK
proteins is enzymatically inactive; instead, the domain
mediates protein-protein interactions and associates
intramolecularly with the SH3 domain. DLG4 contains
three PDZ domains. The SH3 domain of DLG4 binds and
clusters the kainate subgroup of glutamate receptors
via two proline-rich sequences in their C-terminal
tail. It also binds AKAP79/150 (A-kinase anchoring
protein). SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 66
Score = 28.4 bits (63), Expect = 0.92
Identities = 11/32 (34%), Positives = 15/32 (46%), Gaps = 3/32 (9%)
Query: 1 MFQIISKDDHNWWQARKDNVAGSA---GLIPS 29
+ +I D WWQAR+ + G IPS
Sbjct: 30 VLHVIDAGDEEWWQARRVHSDSETEEIGFIPS 61
>gnl|CDD|212928 cd11995, SH3_Intersectin1_5, Fifth Src homology 3 domain (or
SH3E) of Intersectin-1. Intersectin-1 (ITSN1) is an
adaptor protein that functions in exo- and endocytosis,
actin cytoskeletal reorganization, and signal
transduction. It plays a role in clathrin-coated pit
(CCP) formation. It binds to many proteins through its
multidomain structure and facilitate the assembly of
multimeric complexes. ITSN1 localizes in membranous
organelles, CCPs, the Golgi complex, and may be
involved in the cell membrane trafficking system. It
exists in alternatively spliced short and long
isoforms. The short isoform contains two Eps15 homology
domains (EH1 and EH2), a coiled-coil region and five
SH3 domains (SH3A-E), while the long isoform, in
addition, contains RhoGEF (also called Dbl-homologous
or DH), Pleckstrin homology (PH) and C2 domains. The
fifth SH3 domain (or SH3E) of ITSN1 has been shown to
bind many protein partners including SGIP1, Sos1,
dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and
synaptojanin-1, among others. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 54
Score = 28.0 bits (62), Expect = 1.1
Identities = 10/29 (34%), Positives = 17/29 (58%), Gaps = 3/29 (10%)
Query: 1 MFQIISKDDHNWWQARKDNVAGSAGLIPS 29
+ +++K+D +WW K + G GL PS
Sbjct: 24 IINVLNKEDPDWW---KGELNGQVGLFPS 49
>gnl|CDD|227778 COG5491, VPS24, Conserved protein implicated in secretion [Cell
motility and secretion].
Length = 204
Score = 30.2 bits (68), Expect = 1.1
Identities = 29/110 (26%), Positives = 46/110 (41%), Gaps = 8/110 (7%)
Query: 163 GTHEDAMYGTKLETIRRIHQEGKIAILDVEPQALKILRTGEFSPFVVFIAAPQLQNLSDY 222
+ AMY +LE+IRRI Q + L +E L++ E V + P L++L +
Sbjct: 80 DMAKAAMYMNELESIRRIMQLFETQFLALELVQLRLETMDELMD--VVVGDPVLEDLEEL 137
Query: 223 DGSLEKLAKE-SDILKSAYEHFFDLTVVN-----NDIEETIGILEKAIEE 266
D + K+ E L + + V N E ILE+A +
Sbjct: 138 DELVNKVLPEIGLELDESEQSLPANVVENGSVPAAVSPEARKILEEAEKI 187
>gnl|CDD|153341 cd07657, F-BAR_Fes_Fer, The F-BAR (FES-CIP4 Homology and
Bin/Amphiphysin/Rvs) domain of Fes (feline sarcoma) and
Fer (Fes related) tyrosine kinases. F-BAR domains are
dimerization modules that bind and bend membranes and
are found in proteins involved in membrane dynamics and
actin reorganization. Fes (feline sarcoma), also called
Fps (Fujinami poultry sarcoma), and Fer (Fes related)
are cytoplasmic (or nonreceptor) tyrosine kinases that
play roles in haematopoiesis, inflammation and immunity,
growth factor signaling, cytoskeletal regulation, cell
migration and adhesion, and the regulation of cell-cell
interactions. Although Fes and Fer show redundancy in
their biological functions, they show differences in
their expression patterns. Fer is ubiquitously expressed
while Fes is expressed predominantly in myeloid and
endothelial cells. Fes and Fer contain an N-terminal
F-BAR domain, an SH2 domain, and a C-terminal catalytic
kinase domain. F-BAR domains form banana-shaped dimers
with a positively-charged concave surface that binds to
negatively-charged lipid membranes. They can induce
membrane deformation in the form of long tubules. The
F-BAR domain of Fes is critical in its role in
microtubule nucleation and bundling.
Length = 237
Score = 30.0 bits (68), Expect = 1.3
Identities = 21/86 (24%), Positives = 30/86 (34%), Gaps = 11/86 (12%)
Query: 22 GSAGLIPSPELQEWRTACSTIDKTKH------EQVNCSIFGRKKKLYKDKYLAKHN--AV 73
L SP + W+ + D+ E + + L KDK AK
Sbjct: 54 AGDDLQGSPISKSWKEIMDSTDQLSKLIKQHAEALESGTLDKLTLLIKDKRKAKKAYQEE 113
Query: 74 FDQLDL---VTYEEVVKLPSFKRKTL 96
Q+D +EV KL S +K L
Sbjct: 114 RQQIDEQYKKLTDEVEKLKSEYQKLL 139
>gnl|CDD|205103 pfam12844, HTH_19, Helix-turn-helix domain. Members of this family
contains a DNA-binding helix-turn-helix domain.
Length = 64
Score = 27.9 bits (63), Expect = 1.3
Identities = 12/50 (24%), Positives = 19/50 (38%), Gaps = 5/50 (10%)
Query: 225 SLEKLAKESDILKSAYEHFFDLTVVNNDIEETIGILEKAIEELHTTPQWI 274
S E LA++ I KS N + + L+K E L + +
Sbjct: 14 SQEDLAEKLGISKSYLSKI-----ENGKSDPSADKLKKIAEALGVDVEEL 58
>gnl|CDD|212929 cd11996, SH3_Intersectin2_5, Fifth Src homology 3 domain (or
SH3E) of Intersectin-2. Intersectin-2 (ITSN2) is an
adaptor protein that functions in exo- and endocytosis,
actin cytoskeletal reorganization, and signal
transduction. It plays a role in clathrin-coated pit
(CCP) formation. It binds to many proteins through its
multidomain structure and facilitate the assembly of
multimeric complexes. ITSN2 also functions as a
specific GEF for Cdc42 activation in epithelial
morphogenesis, and is required in mitotic spindle
orientation. It exists in alternatively spliced short
and long isoforms. The short isoform contains two Eps15
homology domains (EH1 and EH2), a coiled-coil region
and five SH3 domains (SH3A-E), while the long isoform,
in addition, contains RhoGEF (also called
Dbl-homologous or DH), Pleckstrin homology (PH) and C2
domains. The fifth SH3 domain (or SH3E) of ITSN2 is
expected to bind protein partners, similar to ITSN1
which has been shown to bind many protein partners
including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2,
N-WASP, and synaptojanin-1, among others. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 27.6 bits (61), Expect = 1.5
Identities = 11/29 (37%), Positives = 17/29 (58%), Gaps = 3/29 (10%)
Query: 1 MFQIISKDDHNWWQARKDNVAGSAGLIPS 29
+ +++KDD +WWQ + G GL PS
Sbjct: 24 LINVLNKDDPDWWQGE---INGVTGLFPS 49
>gnl|CDD|212779 cd11845, SH3_Src_like, Src homology 3 domain of Src kinase-like
Protein Tyrosine Kinases. Src subfamily members
include Src, Lck, Hck, Blk, Lyn, Fgr, Fyn, Yrk, Yes,
and Brk. Src (or c-Src) proteins are cytoplasmic (or
non-receptor) PTKs which are anchored to the plasma
membrane. They contain an N-terminal SH4 domain with a
myristoylation site, followed by SH3 and SH2 domains, a
tyr kinase domain, and a regulatory C-terminal region
containing a conserved tyr. They are activated by
autophosphorylation at the tyr kinase domain, but are
negatively regulated by phosphorylation at the
C-terminal tyr by Csk (C-terminal Src Kinase). However,
Brk lacks the N-terminal myristoylation sites. Src
proteins are involved in signaling pathways that
regulate cytokine and growth factor responses,
cytoskeleton dynamics, cell proliferation, survival,
and differentiation. They were identified as the first
proto-oncogene products, and they regulate cell
adhesion, invasion, and motility in cancer cells, and
tumor vasculature, contributing to cancer progression
and metastasis. Src kinases are overexpressed in a
variety of human cancers, making them attractive
targets for therapy. They are also implicated in acute
inflammatory responses and osteoclast function. Src,
Fyn, Yes, and Yrk are widely expressed, while Blk, Lck,
Hck, Fgr, Lyn, and Brk show a limited expression
pattern. This subfamily also includes Drosophila
Src42A, Src oncogene at 42A (also known as Dsrc41)
which accumulates at sites of cell-cell or cell-matrix
adhesion, and participates in Drosphila development and
wound healing. It has been shown to promote tube
elongation in the tracheal system, is essential for
proper cell-cell matching during dorsal closure, and
regulates cell-cell contacts in developing Drosophila
eyes. The SH3 domain of Src kinases contributes to
substrate recruitment by binding adaptor
proteins/substrates, and regulation of kinase activity
through an intramolecular interaction. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 52
Score = 27.2 bits (61), Expect = 1.7
Identities = 12/28 (42%), Positives = 15/28 (53%), Gaps = 1/28 (3%)
Query: 2 FQIISKDDHNWWQARKDNVAGSAGLIPS 29
QI+ D +WW AR + G G IPS
Sbjct: 24 LQILDDSDGDWWLARHLS-TGKEGYIPS 50
>gnl|CDD|212965 cd12032, SH3_DLG2, Src Homology 3 domain of Disks Large homolog
2. DLG2, also called postsynaptic density-93 (PSD93)
or Channel-associated protein of synapse-110 (chapsyn
110), is a scaffolding protein that clusters at
synapses and plays an important role in synaptic
development and plasticity. The DLG2 delta isoform
binds inwardly rectifying potassium Kir2 channels,
which determine resting membrane potential in neurons.
It regulates the spatial and temporal distribution of
Kir2 channels within neuronal membranes. DLG2 is a
member of the MAGUK (membrane-associated guanylate
kinase) protein family, which is characterized by the
presence of a core of three domains: PDZ, SH3, and
guanylate kinase (GuK). The GuK domain in MAGUK
proteins is enzymatically inactive; instead, the domain
mediates protein-protein interactions and associates
intramolecularly with the SH3 domain. DLG2 contains
three PDZ domains. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 74
Score = 27.7 bits (61), Expect = 1.7
Identities = 12/32 (37%), Positives = 18/32 (56%), Gaps = 3/32 (9%)
Query: 1 MFQIISKDDHNWWQARKDNVAGSA---GLIPS 29
+ +I+ D WWQAR+ G + G+IPS
Sbjct: 34 ILHVINASDDEWWQARRVTPDGDSEEMGVIPS 65
>gnl|CDD|223260 COG0182, COG0182, Predicted translation initiation factor 2B
subunit, eIF-2B alpha/beta/delta family [Translation,
ribosomal structure and biogenesis].
Length = 346
Score = 29.6 bits (67), Expect = 2.0
Identities = 19/67 (28%), Positives = 31/67 (46%), Gaps = 3/67 (4%)
Query: 250 NNDIEETIGILEKAIEELHTT-PQWIPVSWLAKESDILKSAYEHFFDLTVVNNDIEETIG 308
++ EE I LEKA E L +T P + + W +L +A E + ++E
Sbjct: 70 DSKGEEFIEALEKAAETLKSTRPTAVNLFWALDR--MLNAAKEAIEVKEPKESILQEAEE 127
Query: 309 ILEKAIE 315
I E+ +E
Sbjct: 128 IAEEDLE 134
>gnl|CDD|177748 PLN00144, PLN00144, acetylornithine transaminase.
Length = 382
Score = 29.7 bits (67), Expect = 2.2
Identities = 25/92 (27%), Positives = 35/92 (38%), Gaps = 20/92 (21%)
Query: 116 KFPDKYAYPVPHTTRSPRSDE-ENGRAYYFIS-----HDEMMSDIAANQYLEYGT----- 164
KF KY R+P + A F+S H + +A +Y T
Sbjct: 90 KFARKYQR-----VRAPDKKDPAASSATEFVSFSNSFHGRTLGALALTSKEQYRTPFEPL 144
Query: 165 ---HEDAMYGTKLETIRRIHQEGKIAILDVEP 193
YG LE R++ Q+GK A + VEP
Sbjct: 145 MPGVTFVEYG-NLEAARKLIQKGKTAAVFVEP 175
>gnl|CDD|212964 cd12031, SH3_DLG1, Src Homology 3 domain of Disks Large homolog
1. DLG1, also called synapse-associated protein 97
(SAP97), is a scaffolding protein that clusters at
synapses and plays an important role in synaptic
development and plasticity. DLG1 plays roles in
regulating cell polarity, proliferation, migration, and
cycle progression. It interacts with AMPA-type
glutamate receptors and is critical in their maturation
and delivery to synapses. It also interacts with
PKCalpha and promotes wound healing. DLG1 is a member
of the MAGUK (membrane-associated guanylate kinase)
protein family, which is characterized by the presence
of a core of three domains: PDZ, SH3, and guanylate
kinase (GuK). The GuK domain in MAGUK proteins is
enzymatically inactive; instead, the domain mediates
protein-protein interactions and associates
intramolecularly with the SH3 domain. DLG1 contains
three PDZ domains. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 67
Score = 27.3 bits (60), Expect = 2.3
Identities = 11/32 (34%), Positives = 18/32 (56%), Gaps = 3/32 (9%)
Query: 1 MFQIISKDDHNWWQARKDNVAGSA---GLIPS 29
+ +++ D WWQAR+ G + G+IPS
Sbjct: 31 ILHVVNASDDEWWQARQVTADGESEEIGVIPS 62
>gnl|CDD|212704 cd11770, SH3_Nephrocystin, Src Homology 3 domain of Nephrocystin
(or Nephrocystin-1). Nephrocystin contains an SH3
domain involved in signaling pathways that regulate
cell adhesion and cytoskeletal organization. It is a
protein that in humans is associated with juvenile
nephronophthisis, an inherited kidney disease
characterized by renal fibrosis that lead to chronic
renal failure in children. It is localized in cell-cell
junctions in renal duct cells, and is known to interact
with Ack1, an activated Cdc42-associated kinase. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 26.5 bits (59), Expect = 3.3
Identities = 13/31 (41%), Positives = 17/31 (54%), Gaps = 2/31 (6%)
Query: 4 IISKDDHNWWQARKDNVAGSAGLIPSPELQE 34
IISK WW A +N G+ GL+P L+
Sbjct: 26 IISKRADGWWLA--ENSKGNRGLVPKTYLKV 54
>gnl|CDD|212840 cd11907, SH3_TXK, Src Homology 3 domain of TXK, also called
Resting lymphocyte kinase (Rlk). TXK is a cytoplasmic
(or nonreceptor) tyr kinase containing Src homology
protein interaction domains (SH3, SH2) N-terminal to
the catalytic tyr kinase domain. It also contains an
N-terminal cysteine-rich region. Rlk is expressed in
T-cells and mast cell lines, and is a key component of
T-cell receptor (TCR) signaling. It is important in
TCR-stimulated proliferation, IL-2 production and
phospholipase C-gamma1 activation. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 55
Score = 26.5 bits (58), Expect = 3.3
Identities = 13/33 (39%), Positives = 21/33 (63%), Gaps = 2/33 (6%)
Query: 2 FQIISKDDHNWWQARKDNVAGSAGLIPSPELQE 34
+ I+ + D +WW+AR + G+ GLIPS + E
Sbjct: 25 YLILEQYDPHWWKAR--DRYGNEGLIPSNYVTE 55
>gnl|CDD|212797 cd11863, SH3_CACNB, Src Homology 3 domain of Voltage-dependent
L-type calcium channel subunit beta. Voltage-dependent
calcium channels (Ca(V)s) are multi-protein complexes
that regulate the entry of calcium into cells. They
impact muscle contraction, neuronal migration, hormone
and neurotransmitter release, and the activation of
calcium-dependent signaling pathways. They are composed
of four subunits: alpha1, alpha2delta, beta, and gamma.
The beta subunit is a soluble and intracellular protein
that interacts with the transmembrane alpha1 subunit.
It facilitates the trafficking and proper localization
of the alpha1 subunit to the cellular plasma membrane.
Vertebrates contain four different beta subunits from
distinct genes (beta1-4); each exists as multiple
splice variants. All are expressed in the brain while
other tissues show more specific expression patterns.
The beta subunits show similarity to MAGUK
(membrane-associated guanylate kinase) proteins in that
they contain SH3 and inactive guanylate kinase (GuK)
domains; however, they do not appear to contain a PDZ
domain. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 62
Score = 26.9 bits (60), Expect = 3.4
Identities = 10/28 (35%), Positives = 13/28 (46%)
Query: 3 QIISKDDHNWWQARKDNVAGSAGLIPSP 30
I K +++WW R G IPSP
Sbjct: 33 HIKEKYNNDWWIGRLVKEGCDIGFIPSP 60
>gnl|CDD|240751 cd12305, RRM_NELFE, RNA recognition motif in negative elongation
factor E (NELF-E) and similar proteins. This subfamily
corresponds to the RRM of NELF-E, also termed
RNA-binding protein RD. NELF-E is the RNA-binding
subunit of cellular negative transcription elongation
factor NELF (negative elongation factor) involved in
transcriptional regulation of HIV-1 by binding to the
stem of the viral transactivation-response element (TAR)
RNA which is synthesized by cellular RNA polymerase II
at the viral long terminal repeat. NELF is a
heterotetrameric protein consisting of NELF A, B, C or
the splice variant D, and E. NELF-E contains an RNA
recognition motif (RRM), also termed RBD (RNA binding
domain) or RNP (ribonucleoprotein domain). It plays a
role in the control of HIV transcription by binding to
TAR RNA. In addition, NELF-E is associated with the
NELF-B subunit, probably via a leucine zipper motif. .
Length = 75
Score = 26.8 bits (60), Expect = 3.4
Identities = 12/45 (26%), Positives = 23/45 (51%), Gaps = 8/45 (17%)
Query: 234 DILKSAYEHFFDLTVVNNDIE--------ETIGILEKAIEELHTT 270
+ILK A+ F ++ ++ + E E + ++AI EL+ T
Sbjct: 17 EILKKAFSPFGNIINISMEKEKNCGFVTFEKMESADRAIAELNGT 61
Score = 26.8 bits (60), Expect = 3.4
Identities = 12/45 (26%), Positives = 23/45 (51%), Gaps = 8/45 (17%)
Query: 284 DILKSAYEHFFDLTVVNNDIE--------ETIGILEKAIEELHTT 320
+ILK A+ F ++ ++ + E E + ++AI EL+ T
Sbjct: 17 EILKKAFSPFGNIINISMEKEKNCGFVTFEKMESADRAIAELNGT 61
>gnl|CDD|234988 PRK01889, PRK01889, GTPase RsgA; Reviewed.
Length = 356
Score = 29.1 bits (66), Expect = 3.6
Identities = 12/24 (50%), Positives = 16/24 (66%), Gaps = 4/24 (16%)
Query: 92 KRKTLVLLGAHGVGRRHIKNTLIN 115
KT+ LLG+ GVG K+TL+N
Sbjct: 194 GGKTVALLGSSGVG----KSTLVN 213
>gnl|CDD|212583 cd11688, THUMP, THUMP domain, predicted to bind RNA. The THUMP
domain is named after THioUridine synthases, RNA
Methyltransferases and Pseudo-uridine synthases. It is
predicted to be an RNA-binding domain and probably
functions by delivering a variety of RNA modification
enzymes to their targets.
Length = 148
Score = 28.2 bits (63), Expect = 3.8
Identities = 19/86 (22%), Positives = 31/86 (36%), Gaps = 3/86 (3%)
Query: 175 ETIRRIHQEGKIAILDVEPQALKILRTGEFSPFVVFIAAPQLQNLSDYDGSLEKLAKESD 234
I E K + D+ AL+I + F + +N + + S E K D
Sbjct: 59 SRIMPPLGECKADLEDLYETALEINEPEMGNEGAKFAVRARRRNKTILN-SQEIAMKVGD 117
Query: 235 ILKSAYEHFFDLTVVNNDIEETIGIL 260
+ A+ DL N DI + +
Sbjct: 118 AIVDAFNPEVDLD--NPDIVVNVEVH 141
>gnl|CDD|215165 PLN02292, PLN02292, ferric-chelate reductase.
Length = 702
Score = 28.7 bits (64), Expect = 4.9
Identities = 10/25 (40%), Positives = 15/25 (60%)
Query: 3 QIISKDDHNWWQARKDNVAGSAGLI 27
Q + D + WQAR D++A GL+
Sbjct: 152 QSAATDGESLWQARLDSIAVRLGLV 176
>gnl|CDD|217416 pfam03193, DUF258, Protein of unknown function, DUF258.
Length = 161
Score = 27.9 bits (63), Expect = 5.3
Identities = 14/29 (48%), Positives = 16/29 (55%), Gaps = 4/29 (13%)
Query: 88 LPSFKRKTLVLLGAHGVGRRHIKNTLINK 116
P K KT VL G GVG K+TL+N
Sbjct: 30 KPLLKGKTSVLAGQSGVG----KSTLLNA 54
>gnl|CDD|224084 COG1162, COG1162, Predicted GTPases [General function prediction
only].
Length = 301
Score = 28.4 bits (64), Expect = 5.8
Identities = 13/29 (44%), Positives = 14/29 (48%), Gaps = 4/29 (13%)
Query: 89 PSFKRKTLVLLGAHGVGRRHIKNTLINKF 117
K VLLG GVG K+TLIN
Sbjct: 160 ELLAGKITVLLGQSGVG----KSTLINAL 184
>gnl|CDD|233691 TIGR02027, rpoA, DNA-directed RNA polymerase, alpha subunit,
bacterial and chloroplast-type. This family consists of
the bacterial (and chloroplast) DNA-directed RNA
polymerase alpha subunit, encoded by the rpoA gene. The
RNA polymerase catalyzes the transcription of DNA into
RNA using the four ribonucleoside triphosphates as
substrates. The amino terminal domain is involved in
dimerizing and assembling the other RNA polymerase
subunits into a transcriptionally active enzyme. The
carboxy-terminal domain contains determinants for
interaction with DNA and with transcriptional activator
proteins [Transcription, DNA-dependent RNA polymerase].
Length = 297
Score = 28.0 bits (63), Expect = 6.3
Identities = 20/74 (27%), Positives = 31/74 (41%), Gaps = 7/74 (9%)
Query: 249 VNNDIEETIG----ILEKAIEELHTTPQWIPVSWLAKESDILKSAYEHFFDLTVVNNDIE 304
VN ++E T +K I E+ T P +A+ + IL EH ++ +IE
Sbjct: 158 VNYEVENTRVGQRTDYDKLILEIETNGSITPKDAIAEAAKILI---EHLEPFVNLDEEIE 214
Query: 305 ETIGILEKAIEELH 318
E+ EEL
Sbjct: 215 AFEEEQEEEEEELE 228
>gnl|CDD|216137 pfam00822, PMP22_Claudin, PMP-22/EMP/MP20/Claudin family.
Length = 161
Score = 27.3 bits (61), Expect = 6.9
Identities = 14/52 (26%), Positives = 21/52 (40%), Gaps = 11/52 (21%)
Query: 4 IISKDDHNWWQARKDNVAGSAGLIPSPELQEWRTACSTIDKTKHEQVNCSIF 55
++ W +R A SAGL WR C+T T Q++C +
Sbjct: 20 FVATIPDQWKVSRYVGAAASAGL--------WRN-CTTQSCTG--QISCKVL 60
>gnl|CDD|206747 cd01854, YjeQ_EngC, Ribosomal interacting GTPase YjeQ/EngC, a
circularly permuted subfamily of the Ras GTPases. YjeQ
(YloQ in Bacillus subtilis) is a ribosomal small
subunit-dependent GTPase; hence also known as RsgA. YjeQ
is a late-stage ribosomal biogenesis factor involved in
the 30S subunit maturation, and it represents a protein
family whose members are broadly conserved in bacteria
and have been shown to be essential to the growth of E.
coli and B. subtilis. Proteins of the YjeQ family
contain all sequence motifs typical of the vast class of
P-loop-containing GTPases, but show a circular
permutation, with a G4-G1-G3 pattern of motifs as
opposed to the regular G1-G3-G4 pattern seen in most
GTPases. All YjeQ family proteins display a unique
domain architecture, which includes an N-terminal
OB-fold RNA-binding domain, the central permuted GTPase
domain, and a zinc knuckle-like C-terminal cysteine
domain.
Length = 211
Score = 27.7 bits (63), Expect = 7.3
Identities = 13/25 (52%), Positives = 16/25 (64%), Gaps = 4/25 (16%)
Query: 91 FKRKTLVLLGAHGVGRRHIKNTLIN 115
K KT VL+G GVG K+TL+N
Sbjct: 83 LKGKTSVLVGQSGVG----KSTLLN 103
>gnl|CDD|237028 PRK12267, PRK12267, methionyl-tRNA synthetase; Reviewed.
Length = 648
Score = 28.2 bits (64), Expect = 7.7
Identities = 20/71 (28%), Positives = 33/71 (46%), Gaps = 11/71 (15%)
Query: 214 PQLQNLSDYDGSLEKLAKESDILKSAYEHF--FDLTVVNNDIEETIGILEKAIEELHTTP 271
P N++++D L LA+E LK+ E + ++ + I K I+E T P
Sbjct: 375 PAPGNVTEFDEELIALAEE--TLKNYEELMEELQFSRALEEVWKLISRANKYIDE--TAP 430
Query: 272 QWIPVSWLAKE 282
W+ LAK+
Sbjct: 431 -WV----LAKD 436
>gnl|CDD|241419 cd13265, PH_evt, Evectin Pleckstrin homology (PH) domain. There
are 2 members of the evectin family (also called
pleckstrin homology domain containing, family B): evt-1
(also called PLEKHB1) and evt-2 (also called PLEKHB2).
evt-1 is specific to the nervous system, where it is
expressed in photoreceptors and myelinating glia. evt-2
is widely expressed in both neural and nonneural
tissues. Evectins possess a single N-terminal PH domain
and a C-terminal hydrophobic region. evt-1 is thought to
function as a mediator of post-Golgi trafficking in
cells that produce large membrane-rich organelles. It is
a candidate gene for the inherited human retinopathy
autosomal dominant familial exudative vitreoretinopathy
and a susceptibility gene for multiple sclerosis. evt-2
is essential for retrograde endosomal membrane transport
from the plasma membrane (PM) to the Golgi. Two membrane
trafficking pathways pass through recycling endosomes: a
recycling pathway and a retrograde pathway that links
the PM to the Golgi/ER. Its PH domain that is unique in
that it specifically recognizes phosphatidylserine (PS),
but not polyphosphoinositides. PS is an anionic
phospholipid class in eukaryotic biomembranes, is highly
enriched in the PM, and plays key roles in various
physiological processes such as the coagulation cascade,
recruitment and activation of signaling molecules, and
clearance of apoptotic cells. PH domains are only found
in eukaryotes. They share little sequence conservation,
but all have a common fold, which is electrostatically
polarized. PH domains have diverse functions, but in
general are involved in targeting proteins to the
appropriate cellular location or in the interaction with
a binding partner. They share little sequence
conservation, but all have a common fold, which is
electrostatically polarized. Less than 10% of PH domains
bind phosphoinositide phosphates (PIPs) with high
affinity and specificity. PH domains are distinguished
from other PIP-binding domains by their specific
high-affinity binding to PIPs with two vicinal phosphate
groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3
which results in targeting some PH domain proteins to
the plasma membrane. A few display strong specificity in
lipid binding. Any specificity is usually determined by
loop regions or insertions in the N-terminus of the
domain, which are not conserved across all PH domains.
PH domains are found in cellular signaling proteins such
as serine/threonine kinase, tyrosine kinases, regulators
of G-proteins, endocytotic GTPases, adaptors, as well as
cytoskeletal associated molecules and in lipid
associated enzymes.
Length = 108
Score = 26.5 bits (59), Expect = 7.9
Identities = 8/19 (42%), Positives = 13/19 (68%)
Query: 278 WLAKESDILKSAYEHFFDL 296
WL ++S ILK +++F L
Sbjct: 8 WLLRQSTILKRWKKNWFVL 26
>gnl|CDD|224536 COG1621, SacC, Beta-fructosidases (levanase/invertase)
[Carbohydrate transport and metabolism].
Length = 486
Score = 28.1 bits (63), Expect = 8.4
Identities = 8/37 (21%), Positives = 20/37 (54%), Gaps = 3/37 (8%)
Query: 3 QIISKDDHNWWQ---ARKDNVAGSAGLIPSPELQEWR 36
+++ + WW A+ +++ G+ L S +L+ W+
Sbjct: 166 KVVWDEGGKWWMMLGAQGEDLKGTILLYESDDLKNWQ 202
>gnl|CDD|232858 TIGR00177, molyb_syn, molybdenum cofactor synthesis domain. The
Drosophila protein cinnamon, the Arabidopsis protein
cnx1, and rat protein gephyrin each have one domain like
MoeA and one like MoaB and Mog. These domains are,
however, distantly related to each other, as captured by
This model. Gephyrin is unusual in that it seems to be a
tubulin-binding neuroprotein involved in the clustering
of both blycine receptors and GABA receptors, rather
than a protein of molybdenum cofactor biosynthesis.
Length = 144
Score = 26.9 bits (60), Expect = 8.6
Identities = 12/36 (33%), Positives = 20/36 (55%)
Query: 233 SDILKSAYEHFFDLTVVNNDIEETIGILEKAIEELH 268
+ +L+ A + L +V +D EE IL KA++E
Sbjct: 33 AALLEEAGFNVSRLGIVPDDPEEIREILRKAVDEAD 68
Score = 26.9 bits (60), Expect = 8.6
Identities = 12/36 (33%), Positives = 20/36 (55%)
Query: 283 SDILKSAYEHFFDLTVVNNDIEETIGILEKAIEELH 318
+ +L+ A + L +V +D EE IL KA++E
Sbjct: 33 AALLEEAGFNVSRLGIVPDDPEEIREILRKAVDEAD 68
>gnl|CDD|190848 pfam04056, Ssl1, Ssl1-like. Ssl1-like proteins are 40kDa subunits
of the Transcription factor II H complex.
Length = 193
Score = 27.4 bits (61), Expect = 9.0
Identities = 12/30 (40%), Positives = 18/30 (60%)
Query: 40 STIDKTKHEQVNCSIFGRKKKLYKDKYLAK 69
STID K E++ CS+ G +++ K L K
Sbjct: 121 STIDTLKKEKIRCSVIGLSAEVFICKELCK 150
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
0.317 0.134 0.402
Gapped
Lambda K H
0.267 0.0813 0.140
Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Sequences: 44354
Number of Hits to DB: 17,610,368
Number of extensions: 1722387
Number of successful extensions: 2017
Number of sequences better than 10.0: 1
Number of HSP's gapped: 1997
Number of HSP's successfully gapped: 96
Length of query: 330
Length of database: 10,937,602
Length adjustment: 97
Effective length of query: 233
Effective length of database: 6,635,264
Effective search space: 1546016512
Effective search space used: 1546016512
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 16 ( 7.3 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 41 (21.7 bits)
S2: 59 (26.3 bits)