title: Specificity of enzyme and methyl donor for methylation reactions.
mesh_terms: D000818:Animals; D001921:Brain / Q000201:enzymology; D002394:Catechol O-Methyltransferase / Q000378:metabolism; D002848:Chromatography, DEAE-Cellulose; D002850:Chromatography, Gel; D006632:Histamine; D007211:Indoles; D008745:Methylation; D008780:Methyltransferases / Q000302:isolation & purification / Q000378:metabolism*; D010627:Phenethylamines; D051381:Rats; D012436:S-Adenosylmethionine / Q000378:metabolism; D013763:Tetrahydrofolates / Q000378:metabolism
chemical_list: D007211:Indoles; D010627:Phenethylamines; D013763:Tetrahydrofolates; D012436:S-Adenosylmethionine; D006632:Histamine; D008780:Methyltransferases; D002394:Catechol O-Methyltransferase