?cl21473: ArsB_NhaD_permease Superfamily (this model, PSSM-Id:419678 is obsolete and has been replaced by 473875)
Anion permease ArsB/NhaD. These permeases have been shown to translocate sodium, arsenate, antimonite, sulfate and organic anions across biological membranes in all three kingdoms of life. A typical anion permease contains 8-13 transmembrane helices and can function either independently as a chemiosmotic transporter or as a channel-forming subunit of an ATP-driven anion pump.