CHR, a novel family of prokaryotic proton motive force-driven transporters probably containing chromate/sulfate antiporters.
We describe a small family of proteins, CHR, which contains members that function in chromate and/or sulfate transport. CHR proteins occur in bacteria and archaea. They consist of about 400 amino acyl residues, appear to have 10 transmembrane alpha-helical segments in an unusual 4+6 arrangement, and arose by an intragenic duplication event.
Nies
D H
DH
Institut für Mikrobiologie, D-06099 Halle, Germany. D.Nies@mikrobiologie.uni-halle.de
Koch
S
S
Wachi
S
S
Peitzsch
N
N
Saier
M H
MH
D000595:Amino Acid Sequence; D017920:Antiporters / Q000737:chemistry / Q000145:classification / Q000235:genetics*; D001426:Bacterial Proteins / Q000737:chemistry / Q000145:classification / Q000235:genetics*; D002840:Chromates / Q000378:metabolism*; D008969:Molecular Sequence Data; D009876:Operon; D010802:Phylogeny; D011387:Prokaryotic Cells; D011522:Protons; D017386:Sequence Homology, Amino Acid; D013431:Sulfates / Q000378:metabolism*
D017920:Antiporters; D001426:Bacterial Proteins; D002840:Chromates; D011522:Protons; D013431:Sulfates