Antiport A membrane transport protein in which the energy liberated by the passive movement of H+ ions across the membrane is coupled to the active transport of another solute, e.g.

• 逆向转运：物质跨膜运动所需的能量来自膜两侧离子浓度梯度。物质跨膜运动的方向与离子转移的方向相反。