ubiquinone-8 + H2 + 2 H(+)(in) <=> ubiquinol-8 + 2 H(+)(out)
ubiquinone-8 + h2 + 2 h(+)(in) <=> ubiquinol-8 + 2 h(+)(out)
ubiquinone-8 + H2 + 2 H(+)(in) <=> ubiquinol-8 + 2 H(+)(out)
ubiquinone-8 + h2 + 2 h(+)(in) <=> ubiquinol-8 + 2 h(+)(out)