Definition: An enzyme that catalyzes the transfer of a methyl group from S-adenosylmethionine to histamine, forming N-methylhistamine, the major metabolite of histamine in man. EC 2.1.1.8.
Other names Histamine Methyltransferase; N-Methyltransferase, Histamine; Methyltransferase, Histamine; Histamine N Methyltransferase