label: plastoquinol--plastocyanin reductase activity
label_lc: plastoquinol--plastocyanin reductase activity
description: "Catalysis of the reaction: 2 H+[side 1] + 2 oxidized plastocyanin + plastoquinol-1 = 2 H+[side 2] + 2 reduced plastocyanin + plastoquinone. This reaction involves the concomitant transfer of 2 H+ ions across a membrane."