menaquinone-8 + NADH + H(+) => menaquinol-8 + NAD(+)
menaquinone-8 + nadh + h(+) => menaquinol-8 + nad(+)
menaquinone-8 + NADH + H(+) => menaquinol-8 + NAD(+)
menaquinone-8 + nadh + h(+) => menaquinol-8 + nad(+)