5-carboxymethylaminomethyl-2-thiouridine(34) in tRNA + A + H2O <=> 5-aminomethyl-2-thiouridine(34) in tRNA + glyoxylate + AH2
5-carboxymethylaminomethyl-2-thiouridine(34) in trna + a + h2o <=> 5-aminomethyl-2-thiouridine(34) in trna + glyoxylate + ah2