MSH: Enzyme that catalyzes the movement of a methyl group from S-adenosylmethionone to a catechol or a catecholamine. EC 2.1.1.6.,NCI: the catechol-O-methyltransferase (COMT) pathway is essential for preventing the generation of estrogen derived reactive oxygen species. (from Thorax 2000;55:574-578)
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