Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: solute(out) + monoatomic cation(in) = solute(in) + monoatomic cation(out). Monoatomic cations include H+, Mg2+, Ca2+, etc.
Statements about Amino Acid:monoatomic Cation Antiporter Activity
