label: tRNA (adenine(22)-N1)-methyltransferase activity
label_lc: trna (adenine(22)-n1)-methyltransferase activity
description: "Catalysis of the reaction: adenosine(22) in tRNA + S-adenosyl-L-methionine = H+ + N(1)-methyladenosine(22) in tRNA + S-adenosyl-L-homocysteine."