tRNA (guanine(7)-N2)-methyltransferase activity
Catalysis of the reaction: guanosine(7) in tRNA + S-adenosyl-L-methionine = H+ + N(2)-methylguanosine(7) in tRNA + S-adenosyl-L-homocysteine.
GO:0008170
N-methyltransferase activity
is_a
GO:0016423
tRNA (guanine) methyltransferase activity
is_a