LCK is a member of the Src family of protein tyrosine kinases (PTKs). It is a key signaling molecule in the selection and maturation of developing T-cells. It contains N-terminal sites for myristylation and palmitylation, a PTK domain, and SH2 and SH3 domains which are involved in mediating protein-protein interactions with phosphotyrosine-containing and proline-rich motifs, respectively. LCK localizes to the plasma membrane and pericentrosomal vesicles, and binds to cell surface receptors, including CD4 and CD8, and other signaling molecules. Protein Interaction Partner: LZTS2, CDKAL1, BAG6, UBC, WASL, WAS, env, SMAD3, SMAD2, MAPK1, HSP90AA1, Mbp, HAVCR2, PTPN22, G3BP1, nef, LAT, KHDRBS1, ADAM15, ZAP70, PAK2, LCK, CBL, SOCS3, SOCS2, SOCS1, IL2RB, CISH, YWHAQ, AJUBA, CD5, CBLB, SKAP1, SYK, SOS1, CD38, CD247, CD3E, FAM174A, Protein Size: 363