label: 2-thio-N(6)-dimethylallyladenosine(37) in tRNA + S-adenosyl-L-methionine = 2-methylsulfanyl-N(6)-dimethylallyladenosine(37) in tRNA + S-adenosyl-L-homocysteine + H(+)
label_lc: 2-thio-n(6)-dimethylallyladenosine(37) in trna + s-adenosyl-l-methionine = 2-methylsulfanyl-n(6)-dimethylallyladenosine(37) in trna + s-adenosyl-l-homocysteine + h(+)