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ITK an intracellular tyrosine kinase of the Tec family expressed in T-cells. Plays an essential role in regulation of the adaptive immune response. Contains both SH2 and SH3 domains and plays a role in T-cell proliferation and differentiation. Regulates the development, function and differentiation of conventional T-cells and nonconventional NKT-cells. Is recruited to the cell membrane following activation of the T-cell receptor (TCR). It is phosphorylated by LCK, followed by autophosphorylation leading to its full activation. Phosphorylates PLCG1. Itk-deficient murine T cells display defects in TCR/CD3-induced actin polymerization. Note: This description may include information from UniProtKB.
Protein type: EC; Kinase, protein; Protein kinase, TK; Protein kinase, tyrosine (non-receptor); TK group; Tec family
Chromosomal Location of Human Ortholog: 5q33.3
Cellular Component: cytosol; extrinsic to internal side of plasma membrane
Molecular Function: non-membrane spanning protein tyrosine kinase activity; protein binding; receptor binding
Biological Process: adaptive immune response; cellular defense response; cytokine production; innate immune response; NK T cell differentiation; phospholipase C activation; regulation of cell proliferation; signal transduction; T cell activation; T cell receptor signaling pathway; transmembrane receptor protein tyrosine kinase signaling pathway
Disease: Lymphoproliferative Syndrome 1
Reference #:  Q08881 (UniProtKB)
Alt. Names/Synonyms: EMT; homolog of mouse T-cell itk/tsk; IL2-inducible T-cell kinase; ITK; Kinase EMT; LYK; MGC126257; MGC126258; PSCTK2; T-cell-specific kinase; Tyrosine-protein kinase ITK/TSK; Tyrosine-protein kinase Lyk
Gene Symbols: ITK
Molecular weight: 71,831 Da
Basal Isoelectric point: 7.51  Predict pI for various phosphorylation states
CST Pathways:  Tyrosine Kinases & Substrates
Protein-Specific Antibodies or siRNAs from Cell Signaling Technology® Total Proteins
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