Positive effector of BCR-stimulated responses. Couples the B-cell antigen receptor (BCR) to the mobilization of calcium ion either through a phosphoinositide 3-kinase-dependent pathway, when not phosphorylated on tyrosines of the linker region, or through a phospholipase C-gamma-dependent pathway, when phosphorylated on Tyr-342 and Tyr-346. Thus the differential phosphorylation of Syk can determine the pathway by which BCR is coupled to the regulation of intracellular calcium ion. Likewise, mediates responses to ITGB2 signaling and plays an important role in the regulation of down-stream signaling cascades. Phosphorylates USP25 and regulates its intracellular levels.
Specificity
Natural and recombinant Rat Tyrosine-protein kinase SYK
Interacts with CBL and SLA when it is phosphorylated. The interaction with SLA may link it to CBL, leading to its destruction. Interacts with phosphorylated NFAM1. Interacts through its SH2 domains with the phosphorylated ITAM domain of CD79A which stimulates SYK autophosphorylation and activation. Interacts with ITGB2 and FGR. Interacts with FCRL3 and RHOH. Interacts (via the second SH2 domain) with USP25 (via C-terminus) (By similarity). Interacts with GAB2. Interacts with YWHAG/1433-gamma, which attenuates BCR-induced membrane translocation and activation.
[15/1/25 17:38] Upload to ab completed in less than a minute: 1 file transferred (13.4 Kb/s) Cited for: NUCLEOTIDE SEQUENCE [MRNA];ALTERNATIVE SPLICING (ISOFORMS SYKA AND SYKB)
[15/1/25 17:38] Upload to ab completed in less than a minute: 1 file transferred (13.4 Kb/s) Cited for: PHOSPHORYLATION AT TYR-317 BY LYN;PHOSPHORYLATION AT TYR-342 AND TYR-346
Reviews of ELISA Kit for Rat Tyrosine-protein kinase SYK