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(+)