ID 2.1.1.275 DE gibberellin A9 O-methyltransferase. CA gibberellin A9 + S-adenosyl-L-methionine = O-methyl gibberellin A9 + CA S-adenosyl-L-homocysteine. CC -!- The enzyme also methylates gibberellins A20 (95%), A3 (80%), A4 (69%) CC and A34 (46%) with significant activity. DR F4JUY5, GAMT1_ARATH; //