label: 2 reduced [plastocyanin] + a plastoquinone + 4 H(+)(out) => 2 oxidized [plastocyanin] + a plastoquinol + 2 H(+)(in)
label_lc: 2 reduced [plastocyanin] + a plastoquinone + 4 h(+)(out) => 2 oxidized [plastocyanin] + a plastoquinol + 2 h(+)(in)