ID 2.1.1.215 DE tRNA (guanine(26)-N(2)/guanine(27)-N(2))-dimethyltransferase. CA guanosine(26)/guanosine(27) in tRNA + 4 S-adenosyl-L-methionine = 4 H(+) CA + N(2)-dimethylguanosine(26)/N(2)-dimethylguanosine(27) in tRNA + CA 4 S-adenosyl-L-homocysteine. CC -!- The enzyme from Aquifex aeolicus is similar to the TRM1 CC methyltransferases of archaea and eukarya (see EC 2.1.1.216). CC -!- However, it catalyzes the double methylation of guanines at both CC positions 26 and 27 of tRNA. CC -!- Formerly EC 2.1.1.32. DR O67010, TRM1_AQUAE ; //