BioPAX pathway converted from "p-6Y-SYK phosphorylates BLNK (SLP65)" in the Reactome database.

2.7.10

p-6Y-SYK phosphorylates BLNK (SLP65)

BLNK (SLP-65, BASH) forms a stable complex with GRB2, SOS1, and CIN85 in the cytosol. The complex is recruited to the plasma membrane where activated (phosphorylated) SYK phosphorylates BLNK at tyrosines 72, 84, 96, 178, and 189 (Fu et al. 1998, Chiu et al. 2002, inferred from mouse in Wienands et al. 1998, from chicken in Oellerich et al. 2009). Phosphorylated BLNK serves as a scaffold that binds effector molecules such as Phospholipase C. As inferred from mouse, BLNK interacts with phosphorylated tyrosines on CD79A (Ig-alpha) (Engels et al. 2001, Kabak et al. 2002).

Authored: May, B, 2010-10-31Reviewed: Wienands, J, 2012-02-11Edited: May, B, 2010-10-31

Reactome DB_ID: 113592

cytosolGO0005829

ATP(4-) [ChEBI:30616]

ATP(4-)

Adenosine 5'-triphosphateatpATP

Reactomehttp://www.reactome.orgChEBI30616

Reactome DB_ID: 983690

plasma membraneGO0005886Antigen:p-BCR:p-SYK [plasma membrane]

Antigen:p-BCR:p-SYK

Activated B Cell Receptor:Phosphorylated SYK Complex

Reactome DB_ID: 983691

Antigen:p-BCR [plasma membrane]

Antigen:p-BCR

Phosphorylated B Cell Receptor:Antigen Complex

Reactome DB_ID: 173548

Antigen [plasma membrane]

Antigen

Reactome DB_ID: 983684

p-BCR [plasma membrane]

p-BCR

B Cell Receptor with Phosphorylated CD79A (Ig-alpha) and CD79B (Ig-beta)BCR with phosphorylated CD79A (Ig-alpha) and CD79B (Ig-beta)

Converted from EntitySet in Reactome

Reactome DB_ID: 983676

IgM or IgD [plasma membrane]Converted from EntitySet in Reactome. Each synonym is a name of a PhysicalEntity, and each XREF points to one PhysicalEntity

Reactome DB_ID: 983634

UniProt:P40259 CD79B

CD79B

CD79BIGBB29FUNCTION Required in cooperation with CD79A for initiation of the signal transduction cascade activated by the B-cell antigen receptor complex (BCR) which leads to internalization of the complex, trafficking to late endosomes and antigen presentation. Enhances phosphorylation of CD79A, possibly by recruiting kinases which phosphorylate CD79A or by recruiting proteins which bind to CD79A and protect it from dephosphorylation.SUBUNIT Heterodimer of alpha and beta chains; disulfide-linked. Part of the B-cell antigen receptor complex where the alpha/beta chain heterodimer is non-covalently associated with an antigen-specific membrane-bound surface immunoglobulin of two heavy chains and two light chains. Interacts with LYN (By similarity).TISSUE SPECIFICITY B-cells.PTM Phosphorylated on tyrosine upon B-cell activation by SRC-type Tyr-kinases such as BLK, LYN and SYK.

Homo sapiens

NCBI Taxonomy9606UniProtP40259

O4'-phospho-L-tyrosine at 196

196

EQUAL

O4'-phospho-L-tyrosine [MOD:00048]

O4'-phospho-L-tyrosine (unknown) at 207

207

EQUAL

Chain Coordinates

EQUAL

229

EQUAL

Reactome DB_ID: 983539

UniProt:P11912 CD79A

CD79A

CD79AIGAMB1FUNCTION Required in cooperation with CD79B for initiation of the signal transduction cascade activated by binding of antigen to the B-cell antigen receptor complex (BCR) which leads to internalization of the complex, trafficking to late endosomes and antigen presentation. Also required for BCR surface expression and for efficient differentiation of pro- and pre-B-cells. Stimulates SYK autophosphorylation and activation. Binds to BLNK, bringing BLNK into proximity with SYK and allowing SYK to phosphorylate BLNK. Also interacts with and increases activity of some Src-family tyrosine kinases. Represses BCR signaling during development of immature B-cells.SUBUNIT Heterodimer of alpha and beta chains; disulfide-linked. Part of the B-cell antigen receptor complex where the alpha/beta chain heterodimer is non-covalently associated with an antigen-specific membrane-bound surface immunoglobulin of two heavy chains and two light chains. Interacts through its phosphorylated ITAM domain with the SH2 domains of SYK which stimulates SYK autophosphorylation and activation. Also interacts, when phosphorylated on Tyr-210, with the SH2 domain of BLNK/SLP65, bringing BLNK into proximity with SYK and allowing SYK to phosphorylate BLNK which is necessary for trafficking of the BCR to late endosomes. Interacts with Src-family tyrosine kinases including FYN and LYN, increasing their activity (By similarity).TISSUE SPECIFICITY B-cells.PTM Phosphorylated on tyrosine, serine and threonine residues upon B-cell activation. Phosphorylation of tyrosine residues by Src-family kinases is an early and essential feature of the BCR signaling cascade. The phosphorylated tyrosines serve as docking sites for SH2-domain containing kinases, leading to their activation which in turn leads to phosphorylation of downstream targets. Phosphorylated by LYN. Phosphorylation of serine and threonine residues may prevent subsequent tyrosine phosphorylation.PTM Arginine methylation in the ITAM domain may interfere with the binding of SYK. It promotes signals leading to B-cell differentiation (By similarity).

UniProtP11912

O4'-phospho-L-tyrosine at 188

188

EQUAL

O4'-phospho-L-tyrosine at 199

199

EQUAL

226

EQUAL

Reactome Database ID Release 71983684Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=983684ReactomeR-HSA-983684

Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-HSA-983684.1Reactome Database ID Release 71983691Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=983691ReactomeR-HSA-983691

Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-HSA-983691.1

Reactome DB_ID: 983586

UniProt:P43405 SYK

SYK

SYKFUNCTION Non-receptor tyrosine kinase which mediates signal transduction downstream of a variety of transmembrane receptors including classical immunoreceptors like the B-cell receptor (BCR). Regulates several biological processes including innate and adaptive immunity, cell adhesion, osteoclast maturation, platelet activation and vascular development. Assembles into signaling complexes with activated receptors at the plasma membrane via interaction between its SH2 domains and the receptor tyrosine-phosphorylated ITAM domains. The association with the receptor can also be indirect and mediated by adapter proteins containing ITAM or partial hemITAM domains. The phosphorylation of the ITAM domains is generally mediated by SRC subfamily kinases upon engagement of the receptor. More rarely signal transduction via SYK could be ITAM-independent. Direct downstream effectors phosphorylated by SYK include VAV1, PLCG1, PI-3-kinase, LCP2 and BLNK. Initially identified as essential in B-cell receptor (BCR) signaling, it is necessary for the maturation of B-cells most probably at the pro-B to pre-B transition. Activated upon BCR engagement, it phosphorylates and activates BLNK an adapter linking the activated BCR to downstream signaling adapters and effectors. It also phosphorylates and activates PLCG1 and the PKC signaling pathway. It also phosphorylates BTK and regulates its activity in B-cell antigen receptor (BCR)-coupled signaling. In addition to its function downstream of BCR plays also a role in T-cell receptor signaling. Plays also a crucial role in the innate immune response to fungal, bacterial and viral pathogens. It is for instance activated by the membrane lectin CLEC7A. Upon stimulation by fungal proteins, CLEC7A together with SYK activates immune cells inducing the production of ROS. Also activates the inflammasome and NF-kappa-B-mediated transcription of chemokines and cytokines in presence of pathogens. Regulates neutrophil degranulation and phagocytosis through activation of the MAPK signaling cascade (By similarity). Required for the stimulation of neutrophil phagocytosis by IL15 (PubMed:15123770). Also mediates the activation of dendritic cells by cell necrosis stimuli. Also involved in mast cells activation. Involved in interleukin-3/IL3-mediated signaling pathway in basophils (By similarity). Also functions downstream of receptors mediating cell adhesion. Relays for instance, integrin-mediated neutrophils and macrophages activation and P-selectin receptor/SELPG-mediated recruitment of leukocytes to inflammatory loci. Plays also a role in non-immune processes. It is for instance involved in vascular development where it may regulate blood and lymphatic vascular separation. It is also required for osteoclast development and function. Functions in the activation of platelets by collagen, mediating PLCG2 phosphorylation and activation. May be coupled to the collagen receptor by the ITAM domain-containing FCER1G. Also activated by the membrane lectin CLEC1B that is required for activation of platelets by PDPN/podoplanin. Involved in platelet adhesion being activated by ITGB3 engaged by fibrinogen. Together with CEACAM20, enhances production of the cytokine CXCL8/IL-8 via the NFKB pathway and may thus have a role in the intestinal immune response (By similarity).ACTIVITY REGULATION Autoinhibited. Intramolecular binding of the interdomains A and B (also called linker region) to parts of the catalytic domain keep the catalytic center in an inactive conformation. The phosphorylation of the interdomains or the binding of the SH2 domains with dually phosphorylated ITAM domains on transmembrane proteins disrupt those intramolecular interactions allowing the kinase domain to adopt an active conformation. The phosphorylation of SYK and of the ITAM domains which is responsible for SYK activation is essentially mediated by SRC subfamily kinases, like LYN, upon transmembrane receptors engagement. May also be negatively regulated by PTPN6 through dephosphorylation. Downstream signaling adapters and intermediates like BLNK or RHOH may mediate positive and/or negative feedback regulation. Negatively regulated by CBL and CBLB through ubiquitination and probable degradation. Phosphorylates SH3BP2 which in turn may regulate SYK through LYN (By similarity).SUBUNIT Interacts with LYN; phosphorylates SYK (By similarity). Interacts with RHOH (phosphorylated); regulates mast cells activation (By similarity). Interacts with NFAM1 (phosphorylated); probably involved in BCR signaling (By similarity). Interacts with VAV1 (via SH2 domain); phosphorylates VAV1 upon BCR activation. Interacts with GAB2 (phosphorylated); probably involved in IgE Fc receptor signaling (By similarity). Interacts (via its SH2 domains) with CD79A (via its phosphorylated ITAM domain); the interaction stimulates SYK autophosphorylation and activation (By similarity). Interacts with FCRL3 (PubMed:19843936, PubMed:11162587). Interacts (via SH2 domains) with FCER1G (via ITAM domain); activates SYK and mediates neutrophils and macrophages integrin-mediated activation (By similarity). Interaction with FCER1G in basophils triggers IL3-induced IL4 production (By similarity). Interacts with ITGB2 and FGR; involved in ITGB2 downstream signaling (By similarity). Interacts with ITGB3; upon activation by ITGB3 promotes platelet adhesion. Interacts (via SH2 domains) with TYROBP (via ITAM domain); involved in neutrophils and macrophages integrin-mediated activation (By similarity). Interacts with MSN and SELPLG; mediates the selectin-dependent activation of SYK by SELPLG. Interacts with BLNK (via SH2 domain). Interacts (via the second SH2 domain) with USP25 (via C-terminus); phosphorylates USP25 and regulates USP25 intracellular levels. Interacts (via SH2 domains) with CLEC1B (dimer). Interacts with CLEC7A; participates in leukocyte activation in presence of fungal pathogens. Interacts (phosphorylated) with SLA; may regulate SYK through CBL recruitment. Interacts with YWHAG; attenuates BCR-induced membrane translocation and activation of SYK. Interacts (via SH2 domains) with GCSAM; the interaction increases after B-cell receptor stimulation, resulting in enhanced SYK autophosphorylation and activity. Interacts with TNS2; leading to the phosphorylation of SYK (PubMed:22019427). Interacts with FLNA (via filamin repeat 5); docks SYK to the plasma membrane (PubMed:20713593). Interacts with CEACAM1; lipopolysaccharide activated neutrophils induce phosphorylation of SYK resulting in the formation of a complex including TLR4 and the phosphorylated form of SYK and CEACAM1, which in turn, recruits PTPN6 that dephosphorylates SYK, reducing the production of reactive oxygen species (ROS) and lysosome disruption, leading to a reduction of the inflammasome activity (By similarity). Interacts (via SH2 domains) with CEACAM20 (phosphorylated form); the interaction further enhances CEACAM20 phosphorylation (By similarity). Interacts with IL15RA (PubMed:15123770).SUBUNIT (Microbial infection) Interacts with Epstein-Barr virus LMP2A.TISSUE SPECIFICITY Widely expressed in hematopoietic cells (at protein level) (PubMed:8163536). Expressed in neutrophils (at protein level) (PubMed:15123770). Within the B-cell compartment, expressed from pro- and pre-B cells to plasma cells (PubMed:8163536).DOMAIN The SH2 domains mediate the interaction of SYK with the phosphorylated ITAM domains of transmembrane proteins. Some proteins like CLEC1B have a partial ITAM domain (also called hemITAM) containing a single YxxL motif. The interaction with SYK requires CLEC1B homodimerization.PTM Ubiquitinated by CBLB after BCR activation; which promotes proteasomal degradation.PTM Autophosphorylated. Phosphorylated on tyrosine residues by LYN following receptors engagement. Phosphorylation on Tyr-323 creates a binding site for CBL, an adapter protein that serves as a negative regulator of BCR-stimulated calcium ion signaling. Phosphorylation at Tyr-348 creates a binding site for VAV1. Phosphorylation on Tyr-348 and Tyr-352 enhances the phosphorylation and activation of phospholipase C-gamma and the early phase of calcium ion mobilization via a phosphoinositide 3-kinase-independent pathway (By similarity). Phosphorylated on tyrosine residues in response to IL15 (PubMed:15123770). Phosphorylation on Ser-297 is very common, it peaks 5 minutes after BCR stimulation, and creates a binding site for YWHAG. Phosphorylation at Tyr-630 creates a binding site for BLNK. Dephosphorylated by PTPN6.SIMILARITY Belongs to the protein kinase superfamily. Tyr protein kinase family. SYK/ZAP-70 subfamily.

UniProtP43405

O4'-phospho-L-tyrosine at 348

348

EQUAL

O4'-phospho-L-tyrosine at 352

352

EQUAL

O4'-phospho-L-tyrosine at 525

525

EQUAL

O4'-phospho-L-tyrosine at 526

526

EQUAL

O4'-phospho-L-tyrosine at 131

131

EQUAL

O4'-phospho-L-tyrosine at 323

323

EQUAL

635

EQUAL

Reactome Database ID Release 71983690Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=983690ReactomeR-HSA-983690

Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-HSA-983690.1

Reactome DB_ID: 983692

BLNK:GRB2:SOS1:CIN85 [cytosol]

BLNK:GRB2:SOS1:CIN85

Reactome DB_ID: 912750

UniProt:Q8WV28 BLNK

BLNK

SLP65BLNKBASHFUNCTION Functions as a central linker protein, downstream of the B-cell receptor (BCR), bridging the SYK kinase to a multitude of signaling pathways and regulating biological outcomes of B-cell function and development. Plays a role in the activation of ERK/EPHB2, MAP kinase p38 and JNK. Modulates AP1 activation. Important for the activation of NF-kappa-B and NFAT. Plays an important role in BCR-mediated PLCG1 and PLCG2 activation and Ca(2+) mobilization and is required for trafficking of the BCR to late endosomes. However, does not seem to be required for pre-BCR-mediated activation of MAP kinase and phosphatidyl-inositol 3 (PI3) kinase signaling. May be required for the RAC1-JNK pathway. Plays a critical role in orchestrating the pro-B cell to pre-B cell transition. May play an important role in BCR-induced B-cell apoptosis.SUBUNIT Associates with PLCG1, VAV1 and NCK1 in a B-cell antigen receptor-dependent fashion. Interacts with VAV3, PLCG2 and GRB2. Interacts through its SH2 domain with CD79A. Interacts (via SH2 domain) with SYK; phosphorylated and activated by SYK. Interacts (via SH2 domain) with SCIMP; this interaction is dependent on phosphorylation of SCIMP 'Tyr-131' (PubMed:21930792).TISSUE SPECIFICITY Expressed in B-cell lineage and fibroblast cell lines (at protein level). Highest levels of expression in the spleen, with lower levels in the liver, kidney, pancreas, small intestines and colon.PTM Following BCR activation, phosphorylated on tyrosine residues by SYK and LYN. When phosphorylated, serves as a scaffold to assemble downstream targets of antigen activation, including PLCG1, VAV1, GRB2 and NCK1. Phosphorylation of Tyr-84, Tyr-178 and Tyr-189 facilitates PLCG1 binding. Phosphorylation of Tyr-96 facilitates BTK binding. Phosphorylation of Tyr-72 facilitates VAV1 and NCK1 binding. Phosphorylation is required for both Ca(2+) and MAPK signaling pathways.

UniProtQ8WV28

EQUAL

456

EQUAL

Reactome DB_ID: 64847

UniProt:Q07889 SOS1

SOS1

SOS1FUNCTION Promotes the exchange of Ras-bound GDP by GTP (PubMed:8493579). Probably by promoting Ras activation, regulates phosphorylation of MAP kinase MAPK3 in response to EGF (PubMed:17339331). Catalytic component of a trimeric complex that participates in transduction of signals from Ras to Rac by promoting the Rac-specific guanine nucleotide exchange factor (GEF) activity (By similarity).SUBUNIT Interacts (via C-terminus) with GRB2 (via SH3 domain) (PubMed:8493579, PubMed:7664271). Forms a complex with phosphorylated MUC1 and GRB2 (via its SH3 domains) (PubMed:7664271). Interacts with phosphorylated LAT2 (PubMed:12486104). Interacts with NCK1 and NCK2 (PubMed:10026169). Part of a complex consisting of ABI1, EPS8 and SOS1 (By similarity). Interacts (Ser-1134 and Ser-1161 phosphorylated form) with YWHAB and YWHAE (PubMed:22827337).TISSUE SPECIFICITY Expressed in gingival tissues.PTM Phosphorylation at Ser-1134 and Ser-1161 by RPS6KA3 create YWHAB and YWHAE binding sites and which contribute to the negative regulation of EGF-induced MAPK1/3 phosphorylation.

UniProtQ07889

EQUAL

1333

EQUAL

Reactome DB_ID: 74686

UniProt:P62993-1 GRB2

GRB2

ASHGRB2FUNCTION Adapter protein that provides a critical link between cell surface growth factor receptors and the Ras signaling pathway.FUNCTION Isoform 2 does not bind to phosphorylated epidermal growth factor receptor (EGFR) but inhibits EGF-induced transactivation of a RAS-responsive element. Isoform 2 acts as a dominant negative protein over GRB2 and by suppressing proliferative signals, may trigger active programmed cell death.SUBUNIT Associates (via SH2 domain) with activated EGF and PDGF receptors (tyrosine phosphorylated) (PubMed:10026169, PubMed:19836242). Interacts with PDGFRA (tyrosine phosphorylated); the interaction may be indirect (By similarity). Also associates to other cellular Tyr-phosphorylated proteins such as SIT1, IRS1, IRS4, SHC and LNK; probably via the concerted action of both its SH2 and SH3 domains (PubMed:8388384, PubMed:8491186, PubMed:9553137, PubMed:11433379). It also seems to interact with RAS in the signaling pathway leading to DNA synthesis. Interacts with SOS1 (PubMed:8493579, PubMed:7664271). Forms a complex with MUC1 and SOS1, through interaction of the SH3 domains with SOS1 and the SH2 domain with phosphorylated MUC1 (PubMed:7664271). Interacts with phosphorylated MET (PubMed:11063574, PubMed:11827484). Interacts with phosphorylated TOM1L1 (By similarity). Interacts with the phosphorylated C-terminus of SH2B2 (PubMed:9233773). Interacts with phosphorylated SIT1, LAX1, LAT, LAT2 and LIME1 upon TCR and/or BCR activation (By similarity) (PubMed:9489702, PubMed:12359715, PubMed:12486104, PubMed:12514734). Interacts with NISCH, PTPNS1 and REPS2 (PubMed:9062191, PubMed:9422736, PubMed:11912194). Interacts with syntrophin SNTA1 (By similarity). Interacts (via SH3 domains) with REPS1 (By similarity). Interacts (via SH3 domains) with PIK3C2B (PubMed:11533253). Interacts with CBL and CBLB (PubMed:10022120, PubMed:10086340). Interacts with AJUBA and CLNK (By similarity). Interacts (via SH2 domain) with TEK/TIE2 (tyrosine phosphorylated) (By similarity). Interacts with SHB, INPP5D/SHIP1, SKAP1 and SKAP2 (PubMed:8723348, PubMed:9108392, PubMed:9484780, PubMed:10942756, PubMed:12171928). Interacts with PTPN11 (By similarity). Interacts with PRNP (By similarity). Interacts with RALGPS1 (PubMed:10747847). Interacts with HCST (PubMed:16582911). Interacts with KDR (By similarity). Interacts with FLT1 (tyrosine-phosphorylated) (By similarity). Interacts with GAPT and PTPRE (PubMed:10980613, PubMed:18559951). Interacts (via SH2 domain) with KIF26A (PubMed:19914172). Interacts (via SH3 2) with GAB2 (PubMed:19523899). Interacts with ADAM15 (PubMed:18296648). Interacts with THEMIS2 (By similarity). Interacts (via SH2 domain) with AXL (phosphorylated) (PubMed:9178760, PubMed:19815557). Interacts (via SH2 domain) with KIT (phosphorylated) (PubMed:15526160, PubMed:16129412). Interacts with PTPRJ and BCR (PubMed:12475979, PubMed:15302586). Interacts with PTPN23 (PubMed:21179510). Interacts with FLT4 (tyrosine phosphorylated) (PubMed:15102829). Interacts with EPHB1 and SHC1; activates the MAPK/ERK cascade to regulate cell migration (PubMed:8798570, PubMed:12925710). Part of a complex including TNK2, GRB2, LTK and one receptor tyrosine kinase (RTK) such as AXL and PDGFRL, in which GRB2 promotes RTK recruitment by TNK2 (PubMed:9178760, PubMed:19815557). Interacts (via SH2 domain) with CSF1R (tyrosine phosphorylated) (PubMed:8262059). Interacts with ERBB4 (PubMed:10867024). Interacts with NTRK1 (phosphorylated upon ligand-binding) (PubMed:15488758). Interacts with PTK2/FAK1 (tyrosine phosphorylated) (PubMed:9148935). Interacts with PTK2B/PYK2 (tyrosine phosphorylated) (PubMed:20521079). Isoform 1: Interacts (via SH2-domain) with SCIMP; this interaction is dependent on phosphorylation of SCIMP 'Tyr-69' (PubMed:21930792). Interacts (via SH3 domains) with GAREM1 isoform 1 (via proline-rich domain and tyrosine phosphorylated); the interaction occurs upon EGF stimulation (PubMed:19509291). Interacts with DAB2 (By similarity). Interacts with TESPA1 (PubMed:22561606). Interacts with PLCG1, LAT and THEMIS upon TCR activation in thymocytes; the association is weaker in the absence of TESPA1 (By similarity). Interacts with CD28 (PubMed:24098653). Interacts with RAB13; may recruit RAB13 to the leading edge of migrating endothelial cells where it can activate RHOA (By similarity). Interacts with ASAP3 (phosphorylated form) (PubMed:22027826). Interacts (via SH2 domain) with PTPRH (phosphorylated form) (By similarity). Interacts with PTPRO (phosphorylated form) (By similarity). Interacts with PTPRB (phosphorylated form) (By similarity). Interacts (via SH3 domain 2) with PRR14 (via proline-rich region) (PubMed:27041574). Interacts with FCRL6 (tyrosine phosphorylated form) (PubMed:20933011). Interacts with RHEX (via tyrosine-phosphorylated form) (PubMed:25092874). Interacts with ST5 (PubMed:29030480).SUBUNIT (Microbial infection) Interacts (via SH3 domain) with hepatitis E virus/HEV ORF3 protein.SUBUNIT (Microbial infection) Interacts with hepatitis C virus/HCV protein NS5A via its SH3 domains.SUBUNIT (Microbial infection) Interacts with herpes simplex virus 1 protein UL46.DOMAIN The SH3 domains mediate interaction with RALGPS1 and SHB.SIMILARITY Belongs to the GRB2/sem-5/DRK family.

UniProtP62993-1

EQUAL

217

EQUAL

Reactome DB_ID: 182957

UniProt:Q96B97 SH3KBP1

SH3KBP1

SH3KBP1CIN85FUNCTION Adapter protein involved in regulating diverse signal transduction pathways. Involved in the regulation of endocytosis and lysosomal degradation of ligand-induced receptor tyrosine kinases, including EGFR and MET/hepatocyte growth factor receptor, through an association with CBL and endophilins. The association with CBL, and thus the receptor internalization, may be inhibited by an interaction with PDCD6IP and/or SPRY2. Involved in regulation of ligand-dependent endocytosis of the IgE receptor. Attenuates phosphatidylinositol 3-kinase activity by interaction with its regulatory subunit (By similarity). May be involved in regulation of cell adhesion; promotes the interaction between TTK2B and PDCD6IP. May be involved in the regulation of cellular stress response via the MAPK pathways through its interaction with MAP3K4. Is involved in modulation of tumor necrosis factor mediated apoptosis. Plays a role in the regulation of cell morphology and cytoskeletal organization. Required in the control of cell shape and migration. Has an essential role in the stimulation of B cell activation (PubMed:29636373).SUBUNIT Can self-associate and form homotetramers. Interacts with CD2, F-actin capping protein, PIK3R3, GRB2, EGFR, MET, BLNK, MAP3K4, PDCD6IP, SPRY2, ARHGAP17, ARHGAP27, MAGI2, CRK, BCAR1, SOS1, ASAP1, ARAP3, HIP1R, SYNJ2, INPP5D and STAP1. Interacts with CBL and CBLB, but does not interact with CBLC. Two molecules of SH3KBP1 seem to bind through their respective SH3 1 domain to one molecule of CBLB. The interaction with CBL or CBLB and EGFR is increased upon EGF stimulation. The interaction with CBL is attenuated by PDCD6IP. Interacts through its proline-rich region with the SH3 domain of endophilins SH3GL1, SH3GL2 and SH3GL3. The SH3KBP1-endophilin complex seems to associate with a complex containing the phosphorylated receptor (EGFR or MET) and phosphorylated CBL. Probably associates with ASAP1 and phosphorylated EGFR. Probably part of a complex consisting of at least SH3KBP1, ASAP1 and ARAP3. Interacts with focal adhesion kinases PTK2/FAK1 AND PTK2B/PYK2, probably as a dimer. Interacts with DAB2 and probably associates with chathrin through its interaction with DAB2. Part of a complex consisting of SH3KBP1, DAB2, and clathrin heavy chain. DAB2 and clathrin dissociate from SH3KBP1 following growth factor treatment, enabling interaction with CBL. Interacts with DDN and probably associates with MAGI2 through its interaction with DDN. Interacts with the SH3 domains of SRC tyrosine-protein kinases SRC, LCK, LYN, FGR, FYN and HCK. Interacts with TRADD, BIRC2, TRAF1, TRAF2 and TNFR1, and the association with a TNFR1-associated complex upon stimulation with TNF-alpha seems to be mediated by SRC. Interacts (via SH3 domains) with SHKBP1 (via PXXXPR motifs) (By similarity). Interaction with CBL is abolished in the presence of SHKBP1 (By similarity). Interacts (via SH3 domains) with ZFP36 (via extreme C-terminal region) (PubMed:20221403). Interacts with MAP3K4; this interaction enhances the association with ZFP36 (PubMed:20221403).TISSUE SPECIFICITY Ubiquitously expressed. Also expressed in some cancer cell lines.PTM Monoubiquitinated by CBL and CBLB after EGF stimulation; probably on its C-terminus.

UniProtQ96B97

EQUAL

665

EQUAL

Reactome Database ID Release 71983692Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=983692ReactomeR-HSA-983692

Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-HSA-983692.2

Reactome DB_ID: 29370

ADP(3-) [ChEBI:456216]

ADP(3-)

ADP trianion5'-O-[(phosphonatooxy)phosphinato]adenosineADP

ChEBI456216

Reactome DB_ID: 983687

Antigen:p-BCR:p-SYK:p-BLNK:CIN85:GRB2:SOS1 [plasma membrane]

Antigen:p-BCR:p-SYK:p-BLNK:CIN85:GRB2:SOS1

Activated B Cell Receptor: Phosphorylated SYK:Phosphorylated BLNK Complex

Reactome DB_ID: 983686

p-BLNK:GRB2:SOS1:CIN85 [plasma membrane]

p-BLNK:GRB2:SOS1:CIN85

Reactome DB_ID: 202993

EQUAL

217

EQUAL

Reactome DB_ID: 983559

EQUAL

1333

EQUAL

Reactome DB_ID: 182955

EQUAL

665

EQUAL

Reactome DB_ID: 983579

O4'-phospho-L-tyrosine at 72

EQUAL

O4'-phospho-L-tyrosine at 84

EQUAL

O4'-phospho-L-tyrosine at 96

EQUAL

O4'-phospho-L-tyrosine at 178

178

EQUAL

O4'-phospho-L-tyrosine at 189

189

EQUAL

456

EQUAL

Reactome Database ID Release 71983686Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=983686ReactomeR-HSA-983686

Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-HSA-983686.2

Reactome DB_ID: 983690

Reactome Database ID Release 71983687Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=983687ReactomeR-HSA-983687

Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-HSA-983687.2PHYSIOL-LEFT-TO-RIGHT

ACTIVATION

Reactome DB_ID: 983690

GO0004713

GO molecular function

Reactome Database ID Release 71983699Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=983699Reactome Database ID Release 71983703Database identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser?DB=gk_current&ID=983703ReactomeR-HSA-983703

Reactome stable identifier. Use this URL to connect to the web page of this instance in Reactome: http://www.reactome.org/cgi-bin/eventbrowser_st_id?ST_ID=R-HSA-983703.49697839Pubmed1998BLNK: a central linker protein in B cell activationFu, CTurck, CWKurosaki, TChan, ACImmunity 9:93-10319372136Pubmed2009SLP-65 phosphorylation dynamics reveals a functional basis for signal integration by receptor-proximal adaptor proteinsOellerich, TGrønborg, MNeumann, KHsiao, HHUrlaub, HWienands, JMol Cell Proteomics 8:1738-509705962Pubmed1998SLP-65: a new signaling component in B lymphocytes which requires expression of the antigen receptor for phosphorylationWienands, JSchweikert, JWollscheid, BJumaa, HNielsen, PJReth, MJ Exp Med 188:791-521822214Pubmed2011The B-cell antigen receptor signals through a preformed transducer module of SLP65 and CIN85Oellerich, TBremes, VNeumann, KBohnenberger, HDittmann, KHsiao, HHEngelke, MSchnyder, TBatista, FDUrlaub, HWienands, JEMBO J 30:3620-349341187Pubmed1997Identification of two tyrosine phosphoproteins, pp70 and pp68, which interact with phospholipase Cgamma, Grb2, and Vav after B cell antigen receptor activationFu, CChan, ACJ Biol Chem 272:27362-811449366Pubmed2001Association of SLP-65/BLNK with the B cell antigen receptor through a non-ITAM tyrosine of Ig-alphaEngels, NWollscheid, BWienands, JEur J Immunol 31:2126-3411909947Pubmed2002The direct recruitment of BLNK to immunoglobulin alpha couples the B-cell antigen receptor to distal signaling pathwaysKabak, SSkaggs, BJGold, MRAffolter, MWest, KLFoster, MSSiemasko, KChan, ACAebersold, RClark, MRMol Cell Biol 22:2524-3511071869Pubmed2000Characterization of the CIN85 adaptor protein and identification of components involved in CIN85 complexesWatanabe, STake, HTakeda, KYu, ZXIwata, NKajigaya, SBiochem Biophys Res Commun 278:167-7412456653Pubmed2002BLNK: molecular scaffolding through 'cis'-mediated organization of signaling proteinsChiu, CWDalton, MIshiai, MKurosaki, TChan, ACEMBO J 21:6461-72