three o-methyltransferases which catalyze s-adenosyl-l-methionine ( sam ) -dependent o-methylation of licodione ( lmt ) , flavone/flavonol ( fmt ) , and caffeic acid ( cmt ) were separated from the callus culture of glycyrrhiza echinata , and characteristic differences between their ph optima and mg ( 2+ ) requirement for activity were demonstrated .
C0025831
methyltransferases
C0025723
methylation