MeSH note : from E coli; has two enzymatic activities, one demodifies 5-carboxymethylaminomethyl-2-thiouridine
to the 5-amino cpd, the other catalyzes the transfer of a methyl group from S-adenosylmethionine
to 5-aminomethyl-2-thiouridine thus forming 5-methylaminomethyl-2-thiouridine;