menaquinol-8 + 2 O2 <=> 2 superoxide + menaquinone-8 + 2 H(+)
menaquinol-8 + 2 o2 <=> 2 superoxide + menaquinone-8 + 2 h(+)
menaquinol-8 + 2 O2 <=> 2 superoxide + menaquinone-8 + 2 H(+)
menaquinol-8 + 2 o2 <=> 2 superoxide + menaquinone-8 + 2 h(+)