2-dehydro-L-idonate + NADP(+) <=> 2,5-didehydro-D-gluconate + NADPH + H(+)
2-dehydro-l-idonate + nadp(+) <=> 2,5-didehydro-d-gluconate + nadph + h(+)
2-dehydro-L-idonate + NADP(+) <=> 2,5-didehydro-D-gluconate + NADPH + H(+)
2-dehydro-l-idonate + nadp(+) <=> 2,5-didehydro-d-gluconate + nadph + h(+)