Catalysis of the reaction: a catechol + S-adenosyl-L-methionine = a guaiacol + H+ + S-adenosyl-L-homocysteine. Acts on catechols and on catecholamines such as adrenaline or noradrenaline.
Synonyms:
related_synonym:
COMT I; COMT II; MB-COMT (membrane-bound form of catechol-O-methyltransferase); S-COMT (soluble form of catechol-O-methyltransferase); S-adenosyl-L-methionine:catechol O-methyltransferase activity; catechol methyltransferase activity; catecholamine O-methyltransferase activity
xref:
EC:2.1.1.6; MetaCyc:CATECHOL-O-METHYLTRANSFERASE-RXN; RHEA:17877; Reactome:R-HSA-8955010 "LRTOMT transfers Met to DA, forming 3MT"; reactome:R-HSA-175983 "COMT transfer CH3 from AdoMet to 3,4DHBNZ"