N(7)-methylguanosine(46) in tRNA + S-adenosyl-L-homocysteine => guanosine(46) in tRNA + S-adenosyl-L-methionine
n(7)-methylguanosine(46) in trna + s-adenosyl-l-homocysteine => guanosine(46) in trna + s-adenosyl-l-methionine