Megakaryocyte-associated tyrosine-protein kinase is an enzyme that in humans is encoded by the MATKgene.[5][6][7]
The protein encoded by this gene has amino acid sequence similarity to Csk tyrosine kinase and has the structural features of the CSK subfamily: SRC homology SH2 and SH3 domains, a catalytic domain, a unique N terminus, lack of myristylation signals, lack of a negative regulatory phosphorylation site, and lack of an autophosphorylation site. This protein is thought to play a significant role in the signal transduction of hematopoietic cells. It is able to phosphorylate and inactivate Src family kinases, and may play an inhibitory role in the control of T-cell proliferation. This protein might be involved in signaling in some cases of breast cancer. Three alternatively spliced transcript variants that encode different isoforms have been described for this gene.[7]
^"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^"Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^Bennett BD, Cowley S, Jiang S, London R, Deng B, Grabarek J, Groopman JE, Goeddel DV, Avraham H (February 1994). "Identification and characterization of a novel tyrosine kinase from megakaryocytes". J Biol Chem. 269 (2): 1068–74. PMID8288563.
Okada M, Nada S, Yamanashi Y, et al. (1992). "CSK: a protein-tyrosine kinase involved in regulation of src family kinases". J. Biol. Chem. 266 (36): 24249–52. PMID1722201.
McVicar DW, Lal BK, Lloyd A, et al. (1994). "Molecular cloning of lsk, a carboxyl-terminal src kinase (csk) related gene, expressed in leukocytes". Oncogene. 9 (7): 2037–44. PMID7516063.
Hamaguchi I, Iwama A, Yamaguchi N, et al. (1994). "Characterization of mouse non-receptor tyrosine kinase gene, HYL". Oncogene. 9 (11): 3371–4. PMID7936664.
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Sakano S, Iwama A, Inazawa J, et al. (1994). "Molecular cloning of a novel non-receptor tyrosine kinase, HYL (hematopoietic consensus tyrosine-lacking kinase)". Oncogene. 9 (4): 1155–61. PMID8134117.
Suzuki Y, Yoshitomo-Nakagawa K, Maruyama K, et al. (1997). "Construction and characterization of a full length-enriched and a 5'-end-enriched cDNA library". Gene. 200 (1–2): 149–56. doi:10.1016/S0378-1119(97)00411-3. PMID9373149.
McShan GD, Zagozdzon R, Park SY, et al. (2002). "Csk homologous kinase associates with RAFTK/Pyk2 in breast cancer cells and negatively regulates its activation and breast cancer cell migration". Int. J. Oncol. 21 (1): 197–205. doi:10.3892/ijo.21.1.197. PMID12063569.
Zagozdzon R, Bougeret C, Fu Y, Avraham HK (2003). "Overexpression of the Csk homologous kinase facilitates phosphorylation of Akt/PKB in MCF-7 cells". Int. J. Oncol. 21 (6): 1347–52. doi:10.3892/ijo.21.6.1347. PMID12429987.
Mikkola ET, Bergman M (2003). "Conserved hydrophobicity in the SH2-kinase linker is required for catalytic activity of Csk and CHK". FEBS Lett. 544 (1–3): 11–4. doi:10.1016/S0014-5793(03)00405-8. PMID12782282.