label: tRNA (guanine(26)-N2/guanine(27)-N2)-dimethyltransferase activity
label_lc: trna (guanine(26)-n2/guanine(27)-n2)-dimethyltransferase activity
description: "Catalysis of the reaction: guanosine(26)/guanosine(27) in tRNA + 4 S-adenosyl-L-methionine = 4 H+ + N(2)-dimethylguanosine(26)/N(2)-dimethylguanosine(27) in tRNA + 4 S-adenosyl-L-homocysteine."