Pump for glutathione S-conjugates. ATP + H2O + xenobioticSide 1 = ADP + phosphate + xenobioticSide 2. Belongs to the ABC transporter superfamily. ABCC family. Conjugate transporter (TC 3.A.1.208) subfamily. Lacks some conserved transmembrane domains, which are one of the features of the ABC conjugate transporter subfamily. Could be the product of a pseudogene.