ID 2.1.1.276 DE gibberellin A4 carboxyl methyltransferase. AN gibberellin A4 O-methyltransferase. CA gibberellin A4 + S-adenosyl-L-methionine = O-methyl gibberellin A4 + CA S-adenosyl-L-homocysteine. CC -!- The enzyme also methylates gibberellins A34 (80%), A9 (60%), and A3 CC (45%) with significant activity. DR Q5XF78, GAMT2_ARATH; //