a tyrosine kinase of the Csk family that phosphorylates and inhibits Src family kinases. Specifically phosphorylates Y504 on LCK, which acts as a negative regulatory site. Csk and the phospho-tyrosine phosphatase CD45 reciprocally regulate phosphorylation of the inhibitory tyrosine of the Src family kinases Lck and Fyn during T-cell receptor mediated signaling during thymic development. Note: This description may include information from UniProtKB.
Protein type: Csk family; EC 188.8.131.52; Kinase, protein; Protein kinase, TK; Protein kinase, tyrosine (non-receptor); TK group
Cellular Component: cytoplasm; cytosol; extrinsic to internal side of plasma membrane; plasma membrane
Molecular Function: identical protein binding; kinase activity; non-membrane spanning protein tyrosine kinase activity; protein binding; protein C-terminus binding; protein-tyrosine kinase activity; receptor binding
Biological Process: cell differentiation; central nervous system development; epidermal growth factor receptor signaling pathway; innate immune response; negative regulation of Golgi to plasma membrane protein transport; protein amino acid phosphorylation; regulation of cell proliferation; regulation of cytokine production; T cell costimulation; T cell receptor signaling pathway; transmembrane receptor protein tyrosine kinase signaling pathway