guanosine(37) in tRNA + S-adenosyl-L-methionine = N(1)-methylguanosine(37) in tRNA + S-adenosyl-L-homocysteine + H(+)
guanosine(37) in trna + s-adenosyl-l-methionine = n(1)-methylguanosine(37) in trna + s-adenosyl-l-homocysteine + h(+)
"tRNA-(N(1)G37) methyltransferase"
"trna-(n(1)g37) methyltransferase"