4-phospho-D-erythronate + NAD(+) = (R)-3-hydroxy-2-oxo-4-phosphooxybutanoate + NADH + H(+)
4-phospho-d-erythronate + nad(+) = (r)-3-hydroxy-2-oxo-4-phosphooxybutanoate + nadh + h(+)
"4-O-phosphoerythronate dehydrogenase"
"4-o-phosphoerythronate dehydrogenase"