The members of this family function as mitochondrial potassium-hydrogen exchange transporters. The family is part of a large mitochondrial KHE protein complex.

1: Novel components of an active mitochondrial K(+)/H(+) exchange. Zotova L, Aleschko M, Sponder G, Baumgartner R, Reipert S, Prinz M, Schweyen RJ, Nowikovsky K; J Biol Chem. 2010;285:14399-14414. PMID:20197279