. "Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: solute(out) + H+(in) = solute(in) + H+(out)." . . . "solute:hydrogen antiporter activity" . "L-arabinose/beta-D-thiogalactopyranoside:hydrogen antiporter activity" . "solute:proton antiporter activity" . . . . . . . . . . .