label: N(2)-methylguanosine(6) in tRNA + S-adenosyl-L-homocysteine + H(+) => guanosine(6) in tRNA + S-adenosyl-L-methionine
label_lc: n(2)-methylguanosine(6) in trna + s-adenosyl-l-homocysteine + h(+) => guanosine(6) in trna + s-adenosyl-l-methionine