Chymase is an enzyme that in humans is encoded by the CMA1gene.[1]
This gene product is a chymotryptic serine proteinase that belongs to the peptidase family S1. It is expressed in mast cells and thought to function in the degradation of the extracellular matrix, the regulation of submucosal gland secretion, and the generation of vasoactive peptides. In the heart and blood vessels, this protein, rather than angiotensin converting enzyme, is largely responsible for converting angiotensin I to the vasoactive peptide angiotensin II. Angiotensin II has been implicated in blood pressure control and in the pathogenesis of hypertension, cardiac hypertrophy, and heart failure. Thus, this gene product is a target for cardiovascular disease therapies. This gene maps to 14q11.2 in a cluster of genes encoding other proteases.[2]
References
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Nakano A, Kishi F, Minami K, et al. (1997). "Selective conversion of big endothelins to tracheal smooth muscle-constricting 31-amino acid-length endothelins by chymase from human mast cells". J. Immunol. 159 (4): 1987–92. PMID9257865.
McGrath ME, Mirzadegan T, Schmidt BF (1998). "Crystal structure of phenylmethanesulfonyl fluoride-treated human chymase at 1.9 A". Biochemistry. 36 (47): 14318–24. doi:10.1021/bi971403n. PMID9400368.
Kishi F, Minami K, Okishima N, et al. (1998). "Novel 31-amino-acid-length endothelins cause constriction of vascular smooth muscle". Biochem. Biophys. Res. Commun. 248 (2): 387–90. doi:10.1006/bbrc.1998.8980. PMID9675146.
Pereira PJ, Wang ZM, Rubin H, et al. (1999). "The 2.2 A crystal structure of human chymase in complex with succinyl-Ala-Ala-Pro-Phe-chloromethylketone: structural explanation for its dipeptidyl carboxypeptidase specificity". J. Mol. Biol. 286 (1): 163–73. doi:10.1006/jmbi.1998.2462. PMID9931257.
Pereira PJ, Wang ZM, Rubin H, et al. (1999). "The 2.2 A Crystal Structure of Human Chymase in Complex with Succinyl-Ala-Ala-Pro-Phe-chloromethylketone: Structural Explanation for its Dipeptidyl Carboxypeptidase Specificity". Journal of Molecular Biology. 286 (4): 817. doi:10.1006/jmbi.1999.2691. PMID10208809.
de Paulis A, Minopoli G, Dal Piaz F, et al. (1999). "Novel autocrine and paracrine loops of the stem cell factor/chymase network". Int. Arch. Allergy Immunol. 118 (2–4): 422–5. doi:10.1159/000024153. PMID10224464.
Caughey GH, Raymond WW, Wolters PJ (2000). "Angiotensin II generation by mast cell alpha- and beta-chymases". Biochim. Biophys. Acta. 1480 (1–2): 245–57. doi:10.1016/S0167-4838(00)00076-5. PMID10899625.
Mellon MB, Frank BT, Fang KC (2002). "Mast cell alpha-chymase reduces IgE recognition of birch pollen profilin by cleaving antibody-binding epitopes". J. Immunol. 168 (1): 290–7. doi:10.4049/jimmunol.168.1.290. PMID11751973.
