L-idonate + NADP(+) => 5-dehydro-D-gluconate + NADPH + H(+)
l-idonate + nadp(+) => 5-dehydro-d-gluconate + nadph + h(+)
L-idonate + NADP(+) => 5-dehydro-D-gluconate + NADPH + H(+)
l-idonate + nadp(+) => 5-dehydro-d-gluconate + nadph + h(+)