label: tRNA (guanine(37)-N1)-methyltransferase activity
label_lc: trna (guanine(37)-n1)-methyltransferase activity
description: "Catalysis of the reaction: S-adenosyl-L-methionine + guanine(37) in tRNA = N(1)-methylguanine(37) in tRNA + S-adenosyl-L-homocysteine."