Abstract
Under aerobic conditions, phototrophic bacteria repress the formation of pigments to protect cells in the presence of light from the damaging effects of reactive oxygen species and consume oxygen through respiratory complexes. Members of the PpsR family regulate the transcription of bch, crt, puc, and hem genes in respond to redox or light conditions. This mini-review focuses on the function and distribution of PpsR proteins.
Publication types
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Research Support, Non-U.S. Gov't
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Review
MeSH terms
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Amino Acid Sequence
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Anaerobiosis
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Bacterial Proteins / chemistry
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Bacterial Proteins / genetics*
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Bacterial Proteins / physiology*
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DNA-Binding Proteins / chemistry
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DNA-Binding Proteins / genetics*
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DNA-Binding Proteins / physiology*
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Gene Expression Regulation, Bacterial*
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Genes, Bacterial
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Gram-Negative Bacteria / genetics
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Gram-Negative Bacteria / metabolism*
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Light
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Molecular Sequence Data
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Oxidation-Reduction
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Photosynthesis
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Pigments, Biological / biosynthesis
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Regulon
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Repressor Proteins / chemistry
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Repressor Proteins / genetics*
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Repressor Proteins / physiology*
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Rhodobacter / genetics
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Rhodobacter / metabolism*
Substances
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Bacterial Proteins
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DNA-Binding Proteins
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Pigments, Biological
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Repressor Proteins