5-methylaminomethyl-2-selenouridine(34) in tRNA + phosphate => 5-methylaminomethyl-2-(Se-phospho)selenouridine(34) in tRNA + H2O
5-methylaminomethyl-2-selenouridine(34) in trna + phosphate => 5-methylaminomethyl-2-(se-phospho)selenouridine(34) in trna + h2o