Megakaryocyte-associated tyrosine kinase

MATK
Available structures
PDB	Ortholog search: PDBe RCSB
List of PDB id codes
	1JWO, 1X6G, 3US4
Identifiers
Aliases	MATK, CHK, CTK, HHYLTK, HYL, HYLTK, Lsk, Megakaryocyte-associated tyrosine kinase
External IDs	OMIM: 600038; MGI: 99259; HomoloGene: 48104; GeneCards: MATK; OMA:MATK - orthologs
Gene location (Human)
Chr.	Chromosome 19 (human)
End	3,802,129 bp
Gene location (Mouse)
Chr.	Chromosome 10 (mouse)
End	81,099,199 bp
RNA expression pattern
	Top expressed in
	granulocyte; ; cingulate gyrus; ; anterior cingulate cortex; ; right frontal lobe; ; Brodmann area 9; ; amygdala; ; prefrontal cortex; ; nucleus accumbens; ; putamen; ; caudate nucleus;
	Top expressed in
	superior frontal gyrus; ; primary visual cortex; ; dentate gyrus of hippocampal formation granule cell; ; lumbar subsegment of spinal cord; ; entorhinal cortex; ; perirhinal cortex; ; hippocampus proper; ; olfactory tubercle; ; subiculum; ; lateral septal nucleus;
	More reference expression data
	More reference expression data
Gene ontology
Molecular function	transferase activity; nucleotide binding; protein kinase activity; non-membrane spanning protein tyrosine kinase activity; kinase activity; protein binding; protein tyrosine kinase activity; signaling receptor binding; ATP binding;
Cellular component	cytoplasm; cytosol; membrane; extrinsic component of cytoplasmic side of plasma membrane;
Biological process	cell differentiation; phosphorylation; transmembrane receptor protein tyrosine kinase signaling pathway; protein phosphorylation; positive regulation of cell population proliferation; peptidyl-tyrosine autophosphorylation; mesoderm development; cell population proliferation; innate immune response; ERBB2 signaling pathway; peptidyl-tyrosine phosphorylation; regulation of cell population proliferation;
	Sources:Amigo / QuickGO
Orthologs
	4145
	17179
	ENSG00000007264
	ENSMUSG00000004933
	P42679
	P41242
	NM_002378; NM_139354; NM_139355
	NM_001285853; NM_001285854; NM_001285855; NM_010768
	NP_002369; NP_647611; NP_647612
	NP_001272782; NP_001272783; NP_001272784; NP_034898
	Wikidata
View/Edit Human	View/Edit Mouse

Megakaryocyte-associated tyrosine-protein kinase is an enzyme that in humans is encoded by the MATK gene.^[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]

Interactions

Megakaryocyte-associated tyrosine kinase has been shown to interact with CD117^[8]^[9] and TrkA.^[10]

References

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. doi:10.1016/S0021-9258(18)54220-4. PMID 1722201.
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. PMID 7516063.
Jhun BH, Rivnay B, Price D, Avraham H (1995). "The MATK tyrosine kinase interacts in a specific and SH2-dependent manner with c-Kit". J. Biol. Chem. 270 (16): 9661–6. doi:10.1074/jbc.270.16.9661. PMID 7536744.
Hamaguchi I, Iwama A, Yamaguchi N, et al. (1994). "Characterization of mouse non-receptor tyrosine kinase gene, HYL". Oncogene. 9 (11): 3371–4. PMID 7936664.
Maruyama K, Sugano S (1994). "Oligo-capping: a simple method to replace the cap structure of eukaryotic mRNAs with oligoribonucleotides". Gene. 138 (1–2): 171–4. doi:10.1016/0378-1119(94)90802-8. PMID 8125298.
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. PMID 8134117.
Zrihan-Licht S, Lim J, Keydar I, et al. (1997). "Association of csk-homologous kinase (CHK) (formerly MATK) with HER-2/ErbB-2 in breast cancer cells". J. Biol. Chem. 272 (3): 1856–63. doi:10.1074/jbc.272.3.1856. PMID 8999872.
Price DJ, Rivnay B, Fu Y, et al. (1997). "Direct association of Csk homologous kinase (CHK) with the diphosphorylated site Tyr568/570 of the activated c-KIT in megakaryocytes". J. Biol. Chem. 272 (9): 5915–20. doi:10.1074/jbc.272.9.5915. PMID 9038210.
Hirao A, Hamaguchi I, Suda T, Yamaguchi N (1997). "Translocation of the Csk homologous kinase (Chk/Hyl) controls activity of CD36-anchored Lyn tyrosine kinase in thrombin-stimulated platelets". EMBO J. 16 (9): 2342–51. doi:10.1093/emboj/16.9.2342. PMC 1169835. PMID 9171348.
Grgurevich S, Linnekin D, Musso T, et al. (1997). "The Csk-like proteins Lsk, Hyl, and Matk represent the same Csk homologous kinase (Chk) and are regulated by stem cell factor in the megakaryoblastic cell line MO7e". Growth Factors. 14 (2–3): 103–15. doi:10.3109/08977199709021514. PMID 9255603.
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. PMID 9373149.
Grgurevich S, Mikhael A, McVicar DW (1999). "The Csk homologous kinase, Chk, binds tyrosine phosphorylated paxillin in human blastic T cells". Biochem. Biophys. Res. Commun. 256 (3): 668–75. doi:10.1006/bbrc.1999.0398. PMID 10080957.
Yamashita H, Avraham S, Jiang S, et al. (1999). "The Csk homologous kinase associates with TrkA receptors and is involved in neurite outgrowth of PC12 cells". J. Biol. Chem. 274 (21): 15059–65. doi:10.1074/jbc.274.21.15059. PMID 10329710.
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. PMID 12063569.
Kim S, Zagozdzon R, Meisler A, et al. (2002). "Csk homologous kinase (CHK) and ErbB-2 interactions are directly coupled with CHK negative growth regulatory function in breast cancer". J. Biol. Chem. 277 (39): 36465–70. doi:10.1074/jbc.M206018200. PMID 12122014.
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. PMID 12429987.
Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. Bibcode:2002PNAS...9916899M. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
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. PMID 12782282. S2CID 2653632.

v t e Enzymes
Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Diffusion-limited enzyme Cofactor Enzyme catalysis
Regulation	Allosteric regulation Cooperativity Enzyme inhibitor Enzyme activator
Classification	EC number Enzyme superfamily Enzyme family List of enzymes
Kinetics	Enzyme kinetics Eadie–Hofstee diagram Hanes–Woolf plot Lineweaver–Burk plot Michaelis–Menten kinetics
Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list) EC7 Translocases (list)

Megakaryocyte-associated tyrosine kinase

Interactions

References

Further reading

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