D-erythronate + NAD(+) <=> 2-dehydro-D-erythronate + NADH + H(+)
d-erythronate + nad(+) <=> 2-dehydro-d-erythronate + nadh + h(+)
D-erythronate + NAD(+) <=> 2-dehydro-D-erythronate + NADH + H(+)
d-erythronate + nad(+) <=> 2-dehydro-d-erythronate + nadh + h(+)