beta-D-galacturonate + NAD(+) => D-galactaro-1,5-lactone + NADH + H(+)
beta-d-galacturonate + nad(+) => d-galactaro-1,5-lactone + nadh + h(+)
beta-D-galacturonate + NAD(+) => D-galactaro-1,5-lactone + NADH + H(+)
beta-d-galacturonate + nad(+) => d-galactaro-1,5-lactone + nadh + h(+)