label: apigenin 4'-O-methyltransferase activity
label_lc: apigenin 4'-o-methyltransferase activity
description: "Catalysis of the reaction: S-adenosyl-L-methionine + 5,7,4'-trihydroxyflavone = S-adenosyl-L-homocysteine + 4'-methoxy-5,7-dihydroxyflavone."