Abstract
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.
Publication types
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Amino Acid Sequence
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Antiporters / chemistry
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Antiporters / classification
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Antiporters / genetics*
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Bacterial Proteins / chemistry
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Bacterial Proteins / classification
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Bacterial Proteins / genetics*
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Chromates / metabolism*
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Molecular Sequence Data
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Operon
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Phylogeny
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Prokaryotic Cells
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Protons
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Sequence Homology, Amino Acid
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Sulfates / metabolism*
Substances
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Antiporters
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Bacterial Proteins
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Chromates
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Protons
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Sulfates