(3R)-citramalate(out) + sulfate(in) => (3R)-citramalate(in) + sulfate(out)
(3r)-citramalate(out) + sulfate(in) => (3r)-citramalate(in) + sulfate(out)
(3R)-citramalate(out) + sulfate(in) => (3R)-citramalate(in) + sulfate(out)
(3r)-citramalate(out) + sulfate(in) => (3r)-citramalate(in) + sulfate(out)