UniProtKB - P55194 (3BP1_MOUSE)
SH3 domain-binding protein 1
Sh3bp1
Functioni
GTPase activating protein (GAP) which specifically converts GTP-bound Rho-type GTPases including RAC1 and CDC42 in their inactive GDP-bound form (PubMed:7621827).
By specifically inactivating RAC1 at the leading edge of migrating cells, it regulates the spatiotemporal organization of cell protrusions which is important for proper cell migration. Also negatively regulates CDC42 in the process of actin remodeling and the formation of epithelial cell junctions. Through its GAP activity toward RAC1 and/or CDC42 plays a specific role in phagocytosis of large particles. Specifically recruited by a PI3 kinase/PI3K-dependent mechanism to sites of large particles engagement, inactivates RAC1 and/or CDC42 allowing the reorganization of the underlying actin cytoskeleton required for engulfment. It also plays a role in angiogenesis and the process of repulsive guidance as part of a semaphorin-plexin signaling pathway. Following the binding of PLXND1 to extracellular SEMA3E it dissociates from PLXND1 and inactivates RAC1, inducing the intracellular reorganization of the actin cytoskeleton and the collapse of cells (By similarity).
By similarity1 PublicationGO - Molecular functioni
- GTPase activator activity Source: UniProtKB
- semaphorin receptor binding Source: MGI
- SH3 domain binding Source: MGI
GO - Biological processi
- actin filament organization Source: UniProtKB
- cell junction assembly Source: UniProtKB
- cell migration Source: UniProtKB
- establishment of epithelial cell apical/basal polarity Source: UniProtKB
- filopodium assembly Source: MGI
- negative regulation of small GTPase mediated signal transduction Source: UniProtKB
- phagocytosis, engulfment Source: UniProtKB
- positive regulation of GTPase activity Source: UniProtKB
- regulation of actin cytoskeleton organization Source: MGI
- regulation of actin filament depolymerization Source: MGI
- regulation of blood vessel endothelial cell migration Source: MGI
- regulation of Rac protein signal transduction Source: GO_Central
- ruffle assembly Source: UniProtKB
- semaphorin-plexin signaling pathway Source: UniProtKB
Keywordsi
Molecular function | GTPase activation |
Biological process | Phagocytosis |
Enzyme and pathway databases
Reactomei | R-MMU-9013149, RAC1 GTPase cycle |
Names & Taxonomyi
Protein namesi | Recommended name: SH3 domain-binding protein 1ImportedShort name: 3BP-11 Publication |
Gene namesi | |
Organismi | Mus musculus (Mouse) |
Taxonomic identifieri | 10090 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Glires › Rodentia › Myomorpha › Muroidea › Muridae › Murinae › Mus › Mus |
Proteomesi |
|
Organism-specific databases
MGIi | MGI:104603, Sh3bp1 |
VEuPathDBi | HostDB:ENSMUSG00000022436 |
Subcellular locationi
Nucleus
- Nucleus By similarity
Cytoplasm and Cytosol
- cytosol By similarity
Other locations
- Cell projection By similarity
- tight junction 1 Publication
- adherens junction By similarity
- phagocytic cup By similarity
Note: Localizes at the leading edge of migrating cells. Accumulation at forming phagocytic cups is PI3 kinase/PI3K-dependent and is specific for sites of large particles engagement and their phosphatidylinositol 3,4,5-triphosphate membrane content.By similarity
Cytosol
- cytosol Source: UniProtKB
Nucleus
- nucleus Source: UniProtKB
Plasma Membrane
- phagocytic cup Source: UniProtKB
Other locations
- adherens junction Source: UniProtKB
- bicellular tight junction Source: UniProtKB
- cell leading edge Source: UniProtKB
- lamellipodium Source: MGI
Keywords - Cellular componenti
Cell junction, Cell projection, Cytoplasm, Nucleus, Tight junctionPTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
ChainiPRO_0000056724 | 1 – 680 | SH3 domain-binding protein 1Add BLAST | 680 |
Amino acid modifications
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Modified residuei | 241 | PhosphoserineBy similarity | 1 | |
Modified residuei | 262 | PhosphoserineBy similarity | 1 | |
Modified residuei | 535 | PhosphoserineCombined sources | 1 | |
Modified residuei | 582 | PhosphoserineCombined sources | 1 | |
Modified residuei | 592 | PhosphothreonineCombined sources | 1 | |
Modified residuei | 632 | PhosphoserineCombined sources | 1 |
Keywords - PTMi
PhosphoproteinProteomic databases
EPDi | P55194 |
jPOSTi | P55194 |
MaxQBi | P55194 |
PaxDbi | P55194 |
PeptideAtlasi | P55194 |
PRIDEi | P55194 |
ProteomicsDBi | 286029 |
PTM databases
iPTMneti | P55194 |
PhosphoSitePlusi | P55194 |
Expressioni
Tissue specificityi
Gene expression databases
Bgeei | ENSMUSG00000022436, Expressed in midbrain and 283 other tissues |
ExpressionAtlasi | P55194, baseline and differential |
Interactioni
Subunit structurei
Interacts with RAC1 (PubMed:10508610).
Interacts with the exocyst via EXOC4 and EXOC8; required for the localization of both SH3BP1 and the exocyst to the leading edge of migrating cells.
Interacts with CD2AP and CGNL1; probably part of a complex at cell junctions.
Interacts with CAPZA1; recruits CAPZA1 to forming cell junctions. May interact with AFDN.
Interacts with PLXND1; they dissociate upon SEMA3E binding to PLXND1 allowing SH3BP1 to transduce downstream signal through RAC1 inactivation (By similarity).
Interacts with ABL1, GRB2 and SRC (via SH3 domain) (PubMed:8438166, PubMed:1379745).
By similarity3 PublicationsGO - Molecular functioni
- semaphorin receptor binding Source: MGI
- SH3 domain binding Source: MGI
Protein-protein interaction databases
IntActi | P55194, 4 interactors |
MINTi | P55194 |
STRINGi | 10090.ENSMUSP00000052181 |
Miscellaneous databases
RNActi | P55194, protein |
Structurei
3D structure databases
AlphaFoldDBi | P55194 |
SMRi | P55194 |
ModBasei | Search... |
PDBe-KBi | Search... |
Miscellaneous databases
EvolutionaryTracei | P55194 |
Family & Domainsi
Domains and Repeats
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Domaini | 81 – 262 | BARPROSITE-ProRule annotationAdd BLAST | 182 | |
Domaini | 276 – 469 | Rho-GAPPROSITE-ProRule annotationAdd BLAST | 194 |
Region
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Regioni | 1 – 275 | Interaction with CGNL1By similarityAdd BLAST | 275 | |
Regioni | 1 – 24 | DisorderedSequence analysisAdd BLAST | 24 | |
Regioni | 160 – 184 | DisorderedSequence analysisAdd BLAST | 25 | |
Regioni | 470 – 680 | Interaction with CD2APBy similarityAdd BLAST | 211 | |
Regioni | 488 – 680 | DisorderedSequence analysisAdd BLAST | 193 |
Motif
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Motifi | 607 – 616 | SH3-binding1 Publication | 10 |
Compositional bias
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Compositional biasi | 561 – 591 | Pro residuesSequence analysisAdd BLAST | 31 | |
Compositional biasi | 608 – 623 | Pro residuesSequence analysisAdd BLAST | 16 | |
Compositional biasi | 657 – 671 | Pro residuesSequence analysisAdd BLAST | 15 |
Domaini
Keywords - Domaini
SH3-bindingPhylogenomic databases
eggNOGi | KOG4270, Eukaryota |
GeneTreei | ENSGT00940000158369 |
InParanoidi | P55194 |
OMAi | IESPRYG |
OrthoDBi | 821331at2759 |
Family and domain databases
Gene3Di | 1.10.555.10, 1 hit 1.20.1270.60, 1 hit |
IDEALi | IID50285 |
InterProi | View protein in InterPro IPR027267, AH/BAR_dom_sf IPR004148, BAR_dom IPR008936, Rho_GTPase_activation_prot IPR000198, RhoGAP_dom |
Pfami | View protein in Pfam PF03114, BAR, 1 hit PF00620, RhoGAP, 1 hit |
SMARTi | View protein in SMART SM00721, BAR, 1 hit SM00324, RhoGAP, 1 hit |
SUPFAMi | SSF103657, SSF103657, 1 hit SSF48350, SSF48350, 1 hit |
PROSITEi | View protein in PROSITE PS51021, BAR, 1 hit PS50238, RHOGAP, 1 hit |
(1+)i Sequence
Sequence statusi: Complete.
This entry has 1 described isoform and 5 potential isoforms that are computationally mapped.Show allAlign All
10 20 30 40 50
MMKRQLHRMR QLAHTGSSGR TPETAEFLGE DLLQVEQRLE PAKRAAHNVH
60 70 80 90 100
KRLQACLQGQ SGADMDKRVK KLPLMALSTT MAESFKELDP DSSMGKALEM
110 120 130 140 150
TCAIQNQLAR ILAEFEMTLE RDVLQPLSRL SEEELPAILK HKKSLQKLVS
160 170 180 190 200
DWNTLKSRLS QAAKNSGSNQ GLGGASGSHT HTTTANKVEM LKEEEEELKK
210 220 230 240 250
KVEQCKDEYL ADLYHFSTKE DSYANYFIHL LEIQADYHRK SLTSLDTALA
260 270 280 290 300
ELRDNHSQAD HSPLTTAAPF SRVYGVSLRT HLQDLGRDIA LPIEACVLLL
310 320 330 340 350
LSEGMQEEGL FRLAAGASVL KRLKQTMASD PHSLEEFCSD PHAVAGALKS
360 370 380 390 400
YLRELPEPLM TSDLYDDWMR AASLKEPGAR LEALHDVCSR LPQENFNNLR
410 420 430 440 450
YLMKFLALLA EEQDVNKMTP SNIAIVLGPN LLWPPEKEGD QAQLDAASVS
460 470 480 490 500
SIQVVGVVEA LIQNADTLFP GDINFNVSGI FPGLAPQEKV SSQQVSEELP
510 520 530 540 550
PVTVPAPATT PAPTPAPASM AVRERTEADL PKPTSPKVSR NPTETAASAE
560 570 580 590 600
DMTRKTKRPA PARPTMPPPQ PSSTRSSPPA PSLPPGSVSP GTPQALPRRL
610 620 630 640 650
VGTSLRAPTM PPPLPPVPPQ PARRQSRRLP ASPVISNMPA QVDQGVATED
660 670 680
RGGPEAVGGH PPPPALPPQP RPRGLISETE
Computationally mapped potential isoform sequencesi
There are 5 potential isoforms mapped to this entry.BLASTAlignShow allAdd to basketA2A5V3 | A2A5V3_MOUSE | SH3 domain-binding protein 1 | Sh3bp1 | 582 | Annotation score: | ||
A2A5V2 | A2A5V2_MOUSE | SH3 domain-binding protein 1 | Sh3bp1 | 584 | Annotation score: | ||
S4R2D3 | S4R2D3_MOUSE | SH3 domain-binding protein 1 | Sh3bp1 | 587 | Annotation score: | ||
S4R2T6 | S4R2T6_MOUSE | SH3 domain-binding protein 1 | Sh3bp1 | 209 | Annotation score: | ||
A2A5V1 | A2A5V1_MOUSE | SH3 domain-binding protein 1 | Sh3bp1 | 55 | Annotation score: |
Sequence cautioni
Experimental Info
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Sequence conflicti | 126 – 128 | PLS → RSG in CAA61011 (PubMed:7621827).Curated | 3 | |
Sequence conflicti | 257 | S → N in CAA61011 (PubMed:7621827).Curated | 1 | |
Sequence conflicti | 257 | S → N in AAH04598 (PubMed:15489334).Curated | 1 | |
Sequence conflicti | 306 | Q → QE in CAA61011 (PubMed:7621827).Curated | 1 | |
Sequence conflicti | 340 | D → G in CAA61011 (PubMed:7621827).Curated | 1 | |
Sequence conflicti | 515 | P → L in CAA61011 (PubMed:7621827).Curated | 1 | |
Sequence conflicti | 515 | P → L in AAH04598 (PubMed:15489334).Curated | 1 | |
Sequence conflicti | 652 | G → E in CAA61011 (PubMed:7621827).Curated | 1 | |
Sequence conflicti | 652 | G → E in AAH04598 (PubMed:15489334).Curated | 1 | |
Sequence conflicti | 671 – 672 | RP → PA in CAA61011 (PubMed:7621827).Curated | 2 |
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | X87671 mRNA Translation: CAA61011.1 Different initiation. AL592169 Genomic DNA No translation available. BC004598 mRNA Translation: AAH04598.1 Different initiation. |
CCDSi | CCDS84176.1 |
PIRi | S56144 |
RefSeqi | NP_001303613.1, NM_001316684.1 |
Genome annotation databases
Ensembli | ENSMUST00000001226; ENSMUSP00000001226; ENSMUSG00000022436 |
GeneIDi | 20401 |
KEGGi | mmu:20401 |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | X87671 mRNA Translation: CAA61011.1 Different initiation. AL592169 Genomic DNA No translation available. BC004598 mRNA Translation: AAH04598.1 Different initiation. |
CCDSi | CCDS84176.1 |
PIRi | S56144 |
RefSeqi | NP_001303613.1, NM_001316684.1 |
3D structure databases
Select the link destinations: PDBei RCSB PDBi PDBji Links Updated | PDB entry | Method | Resolution (Å) | Chain | Positions | PDBsum |
1ABO | X-ray | 2.00 | C/D | 607-616 | [»] | |
AlphaFoldDBi | P55194 | |||||
SMRi | P55194 | |||||
ModBasei | Search... | |||||
PDBe-KBi | Search... |
Protein-protein interaction databases
IntActi | P55194, 4 interactors |
MINTi | P55194 |
STRINGi | 10090.ENSMUSP00000052181 |
PTM databases
iPTMneti | P55194 |
PhosphoSitePlusi | P55194 |
Proteomic databases
EPDi | P55194 |
jPOSTi | P55194 |
MaxQBi | P55194 |
PaxDbi | P55194 |
PeptideAtlasi | P55194 |
PRIDEi | P55194 |
ProteomicsDBi | 286029 |
Protocols and materials databases
Antibodypediai | 214, 233 antibodies from 33 providers |
Genome annotation databases
Ensembli | ENSMUST00000001226; ENSMUSP00000001226; ENSMUSG00000022436 |
GeneIDi | 20401 |
KEGGi | mmu:20401 |
Organism-specific databases
CTDi | 23616 |
MGIi | MGI:104603, Sh3bp1 |
VEuPathDBi | HostDB:ENSMUSG00000022436 |
Phylogenomic databases
eggNOGi | KOG4270, Eukaryota |
GeneTreei | ENSGT00940000158369 |
InParanoidi | P55194 |
OMAi | IESPRYG |
OrthoDBi | 821331at2759 |
Enzyme and pathway databases
Reactomei | R-MMU-9013149, RAC1 GTPase cycle |
Miscellaneous databases
BioGRID-ORCSi | 20401, 3 hits in 58 CRISPR screens |
ChiTaRSi | Sh3bp1, mouse |
EvolutionaryTracei | P55194 |
PROi | PR:P55194 |
RNActi | P55194, protein |
SOURCEi | Search... |
Gene expression databases
Bgeei | ENSMUSG00000022436, Expressed in midbrain and 283 other tissues |
ExpressionAtlasi | P55194, baseline and differential |
Family and domain databases
Gene3Di | 1.10.555.10, 1 hit 1.20.1270.60, 1 hit |
IDEALi | IID50285 |
InterProi | View protein in InterPro IPR027267, AH/BAR_dom_sf IPR004148, BAR_dom IPR008936, Rho_GTPase_activation_prot IPR000198, RhoGAP_dom |
Pfami | View protein in Pfam PF03114, BAR, 1 hit PF00620, RhoGAP, 1 hit |
SMARTi | View protein in SMART SM00721, BAR, 1 hit SM00324, RhoGAP, 1 hit |
SUPFAMi | SSF103657, SSF103657, 1 hit SSF48350, SSF48350, 1 hit |
PROSITEi | View protein in PROSITE PS51021, BAR, 1 hit PS50238, RHOGAP, 1 hit |
MobiDBi | Search... |
Entry informationi
Entry namei | 3BP1_MOUSE | |
Accessioni | P55194Primary (citable) accession number: P55194 Secondary accession number(s): A2A5V4, E9QMQ2, Q99KK8 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | October 1, 1996 |
Last sequence update: | October 25, 2017 | |
Last modified: | May 25, 2022 | |
This is version 169 of the entry and version 3 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Chordata Protein Annotation Program |
Miscellaneousi
Keywords - Technical termi
3D-structure, Reference proteomeDocuments
- MGD cross-references
Mouse Genome Database (MGD) cross-references in UniProtKB/Swiss-Prot - PDB cross-references
Index of Protein Data Bank (PDB) cross-references