2 a ubiquinone + 2 H2O + n H(+)(out) => 2 a ubiquinol + O2 + n H(+)(in)
2 a ubiquinone + 2 h2o + n h(+)(out) => 2 a ubiquinol + o2 + n h(+)(in)
2 a ubiquinone + 2 H2O + n H(+)(out) => 2 a ubiquinol + O2 + n H(+)(in)
2 a ubiquinone + 2 h2o + n h(+)(out) => 2 a ubiquinol + o2 + n h(+)(in)