tricarboxylate secondary active transmembrane transporter activity citrate transmembrane transporter activity citrate secondary active transmembrane transporter activity GO:0071913 molecular_function 2010-09-22T02:18:54Z Enables the transfer of citrate from one side of a membrane to the other, up its concentration gradient. The transporter binds the solute and undergoes a series of conformational changes. Transport works equally well in either direction and is driven by a chemiosmotic source of energy. Secondary active transporters include symporters and antiporters. citrate carrier activity mah