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Immunogen sequence: MGCGCSSHP EDDWMENIDV CENCHYPIVP LDGKGTLLIR NGSEVRDPLV TYEGSNPPAS PLQDNLVIAL HSYEPSHDGD LGFEKGEQLR ILEQSGEWWK AQSLTTGQEG FIPFNFVAKA NSLEPEPWFF KNLSRKDAER QLLAPGNTHG SFLIRESEST AGSFSLSVRD FDQNQGEVVK HYKIRNLDNG GFYISPRITF PGLHELVRHY TNASDGLCTR LSRPCQTQKP QKPWWEDEWE VPRETLKLVE RLGAGQFGEV WMGYYNGHTK VAVKSLKQGS MSPDAFLAEA NLMKQLQHQR LVRLYAVVTQ EPIYIITEYM ENDTLLDSQL EEKGLGASPW GNLGQQLLLL PTGSLVDFLK TPSGIKLTIN KLLDMAAQIA EGMAFIEERN YIHRDLRAAN ILVSDTLSCK IADFGLARLI EDNEYTAREG AKFPIKWTAP EAINYGTFTI KSDVWSFGIL LTEIVTHGRI PYPGMTNPEV IQNLERGYRM VRPDNCPEEL YQLMRLCWKE RPEDRPTFDY LRSVLEDFFT ATEGQYQPQP (1-539 aa encoded by BC013200)
LCK is a member of the Src-family tyrosine kinase, which are essential for signaling through the T-cell receptor (TCR) complex. Upon TCR triggering, LCK phosphorylates the ITAM motives in its zeta subunits establishing binding sites for the SH2 domains of the tyrosine kinase ZAP70, which is also phosphorylated by LCK and activated to generate subsequent signaling platforms by phosphorylation of adaptor LAT. The majority of LCK is localized to the plasma membrane, however, there is also a significant fraction associated with the Golgi apparatus which may contribute to Raf activation under conditions of weak stimulation through the TCR. LCK 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 is also involved in the regulation of apoptosis induced by various stimuli, but not by the death receptors. Diseases associated with LCK include Immunodeficiency 22 and CD45 deficiency. Alternatively splice variants of the LCK gene encoding different isoforms of the protein have been found.
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Protein Aliases: EC 2.7.10.2; kinase Lck; Leukocyte C-terminal Src kinase; LSK; Lymphocyte cell-specific protein-tyrosine kinase; OTTHUMP00000008640; OTTHUMP00000008740; OTTHUMP00000008741; p56(LSTRA) protein-tyrosine kinase; p56-LCK; Protein YT16; Proto-oncogene Lck; Proto-oncogene tyrosine-protein kinase LCK; RP4-675E8.4; T cell-specific protein-tyrosine kinase; T-lymphocyte specific protein tyrosine kinase p56lck; tyr; Tyrosine-protein kinase Lck
Gene Aliases:
Hck-3; IMD22; LCK; LSK; Lsk-t; Lskt; p56
UniProt ID: (Human) P06239, (Mouse) P06240
Entrez Gene ID: (Human) 3932, (Mouse) 16818
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