D-apionate + NAD(+) = 3-oxoisoapionate + NADH + H(+)
d-apionate + nad(+) = 3-oxoisoapionate + nadh + h(+)
D-apionate + NAD(+) = 3-oxoisoapionate + NADH + H(+)
d-apionate + nad(+) = 3-oxoisoapionate + nadh + h(+)