Tags: Enzyme.
In enzymology an apigenin 4′-O-methyltransferase (EC 2.1.1.75) is an enzyme that catalyzes the chemical reactionS-adenosyl-L-methionine + 574′-trihydroxyflavone S-adenosyl-L-homocysteine + 4′-methoxy-57-dihydroxyflavoneThus the two substrates of this enzyme are S-adenosyl methionine and 574′-trihydroxyflavone (apigenin) whereas its two products are S-adenosylhomocysteine and 4′-methoxy-57-dihydroxyflavone (acacetin).This enzyme belongs to the family of transferases specifically those transferring one-carbon group methyltransferases.