2 cob(II)alamin + NADH => 2 cob(I)alamin + NAD(+) + H(+)
2 cob(ii)alamin + nadh => 2 cob(i)alamin + nad(+) + h(+)
2 cob(II)alamin + NADH => 2 cob(I)alamin + NAD(+) + H(+)
2 cob(ii)alamin + nadh => 2 cob(i)alamin + nad(+) + h(+)