. "\"OBSOLETE. Catalysis of the reaction: H+(out) + (L-arabinose or beta-D-thiogalactopyranoside)(in) = H+(in) + (L-arabinose or beta-D-thiogalactopyranoside)(out).\" [TC:2.A.1.2.15]" . . "L-arabinose/beta-D-thiogalactopyranoside:hydrogen antiporter activity" . "L-arabinose/beta-D-thiogalactopyranoside:proton antiporter activity" . "This term was made obsolete because it represents a gene product rather than a single discrete molecular function." . "obsolete" .