guanosine(9) in tRNA + S-adenosyl-L-methionine = N(1)-methylguanosine(9) in tRNA + S-adenosyl-L-homocysteine + H(+)
guanosine(9) in trna + s-adenosyl-l-methionine = n(1)-methylguanosine(9) in trna + s-adenosyl-l-homocysteine + h(+)
"tRNA m(1)G(9)-methyltransferase"
"trna m(1)g(9)-methyltransferase"