guanosine(1207) in 16S rRNA + S-adenosyl-L-methionine = N(2)-methylguanosine(1207) in 16S rRNA + S-adenosyl-L-homocysteine + H(+)
guanosine(1207) in 16s rrna + s-adenosyl-l-methionine = n(2)-methylguanosine(1207) in 16s rrna + s-adenosyl-l-homocysteine + h(+)