ID 2.1.1.155 DE kaempferol 4'-O-methyltransferase. AN F 4'-OMT. AN S-adenosyl-L-methionine:flavonoid 4'-O-methyltransferase. CA kaempferol + S-adenosyl-L-methionine = H(+) + kaempferide + S-adenosyl-L- CA homocysteine. CC -!- The enzyme acts on the hydroxy group in the 4'-position of some CC flavones, flavanones and isoflavones. CC -!- Kaempferol, apigenin and kaempferol triglucoside are substrates, CC as is genistein, which reacts more slowly. CC -!- Compounds with an hydroxy group in the 3' and 4' positions, such as CC quercetin and eriodictyol, do not act as substrates. CC -!- Similar to EC 2.1.1.75 and EC 2.1.1.83. DR F2YTN5, MOMT2_SOLHA; A0A3Q7GYG2, MOMT2_SOLLC; Q6VMV8, OMT4_MENPI ; //