Abstract
In a search for genes that produce hypersensitivity to cadmium salts in Escherichia coli, random transposon mutagenesis with TnphoA was used. One of the mutant strains obtained was sensitive to Cd2+ and Zn2+. Sequence analysis showed that the TnphoA insertion was located in the dsbA gene coding for a periplasmic protein required for disulfide bond formation.
MeSH terms
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Acetates / pharmacology*
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Bacterial Proteins / chemistry
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Cadmium / pharmacology*
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Escherichia coli / drug effects*
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Escherichia coli / genetics
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Genes, Bacterial / genetics
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Isomerases / genetics*
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Metals, Heavy / pharmacology
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Mutagenesis, Insertional
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Protein Disulfide-Isomerases
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Protein Folding
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Zinc Sulfate / pharmacology*
Substances
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Acetates
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Bacterial Proteins
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Metals, Heavy
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Cadmium
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Zinc Sulfate
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cadmium acetate
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Isomerases
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Protein Disulfide-Isomerases