COMT（catechol-O-methyltransferase），癌症关联基因，基因ID：1312，邻苯二酚-o-甲基转移酶催化甲基从s-腺苷蛋氨酸转移到儿茶酚胺，包括神经递质多巴胺、肾上腺素和去甲肾上腺素。这种O-甲基化导致儿茶酚胺递质的主要降解途径之一除了在内源性物质代谢中的作用外，comt在用于治疗高血压、哮喘和帕金森病的儿茶酚药物代谢中也很重要。comt在组织中有两种形式，可溶性形式（s-comt）和膜结合形式（mb-comt）。s-comt和mb-comt之间的差异存在于n-末端。通过使用替代翻译起始位点和启动子形成了几个转录变体。[由RefSeq提供，2008年9月]Catechol-O-methyltransferase catalyzes the transfer of a methyl group from S-adenosylmethionine to catecholamines， including the neurotransmitters dopamine， epinephrine， and norepinephrine. This O-methylation results in one of the major degradative pathways of the catecholamine transmitters. In addition to its role in the metabolism of endogenous substances， COMT is important in the metabolism of catechol drugs used in the treatment of hypertension， asthma， and Parkinson disease. COMT is found in two forms in tissues， a soluble form (S-COMT) and a membrane-bound form (MB-COMT). The differences between S-COMT and MB-COMT reside within the N-termin。