a ubiquinol + nitrate + 2 H(+)(in) => a ubiquinone + nitrite + H2O + 2 H(+)(out)
a ubiquinol + nitrate + 2 h(+)(in) => a ubiquinone + nitrite + h2o + 2 h(+)(out)
a ubiquinol + nitrate + 2 H(+)(in) => a ubiquinone + nitrite + H2O + 2 H(+)(out)
a ubiquinol + nitrate + 2 h(+)(in) => a ubiquinone + nitrite + h2o + 2 h(+)(out)