CopZ from Bacillus subtilis interacts in vivo with a copper exporting CPx-type ATPase CopA
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The structure of the hypothetical copper-metallochaperone CopZ from Bacillus subtilis and its predicted partner CopA have been studied but their respective contributions to copper export, -import, -sequestration and -supply are unknown. DeltacopA was hypersensitive to copper and contained more copper atoms cell(-1) than wild-type. Expression from the copA operator-promoter increased in elevated copper (not other metals), consistent with a role in copper export. A bacterial two-hybrid assay revealed in vivo interaction between CopZ and the N-terminal domain of CopA but not that of a related transporter, YvgW, involved in cadmium-resistance. Activity of copper-requiring cytochrome caa(3) oxidase was retained in deltacopZ and deltacopA. DeltacopZ was only slightly copper-hypersensitive but deltacopZ/deltacopA was more sensitive than deltacopA, implying some action of CopZ that is independent of CopA. Significantly, deltacopZ contained fewer copper atoms cell(-1) than wild-type under these conditions. CopZ makes a net contribution to copper sequestration and/or recycling exceeding any donation to CopA for export.
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In B. subtilis and L. monocytogenes, CopZ interacts and exchanges copper with CopA, and is predicted to protect bacteria from inappropriate copper binding to cytoplasmic proteins.
“In B. subtilis and L. monocytogenes, CopZ interacts and exchanges copper with CopA, and is therefore predicted to protect bacteria from the inappropriate binding of copper to cytoplasmic proteins [214, 215].”
From Metal ion acquisition in Staphylococcus aureus: overcoming nutritional immunity (2012) · cites this paper as [215]
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- Authors
- Radford, D. S., Kihlken, M. A., Borrelly, G. P. M., Harwood, C. R., Brun, N. E., & Cavet, J. S.
- Affiliations
- Newcastle University (GB)
- University of East Anglia (GB)
- Corresponding author
- Cavet, Jennifer S.
- Venue
- FEMS Microbiology Letters
- Publisher
- Oxford University Press (OUP)
- Published
- 2003-03
- Volume
- 220
- Issue
- 1
- Pages
- 105-112
- ISSN
- 0378-1097 (ISSN-L)
- 1574-6968
- OpenAlex
- W2011388752
- Cited by
- 99
- References
- 50
- Citations by year
- 2026: 5 · 2025: 1 · 2024: 2 · 2023: 1 · 2022: 6 · 2021: 9 · 2020: 5 · 2019: 3 · 2018: 5 · 2017: 1 · 2016: 8 · 2015: 3 · 2014: 6 · 2012: 2
- FWCI
- 2.64
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- FEMS Microbiology Letters (publishedVersion)
- PubMed (publishedVersion)
- Research Explorer (The University of Manchester) (submittedVersion)
- UEA Digital Repository (University of East Anglia) (submittedVersion)
- Newcastle University ePrints (Newcastle Univesity)
- Funders
- Royal Society
- Biotechnology and Biological Sciences Research Council
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
- Health Sciences › Nursing › Nutrition and Dietetics › Trace Elements in Health
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Metalloenzymes and iron-sulfur proteins
- Keywords
- COPA, copper exports, copper sequestration, copper recycling, Bacillus subtilis, cadmium resistance, cytochrome c oxidase, copper sensitivity, protein-protein interaction, two-hybrid assay
- MeSH terms
- Adenosine Triphosphatases, Bacillus subtilis, Bacterial Proteins, Copper, Enzyme Induction, Models, Biological, Recombinant Fusion Proteins, Gene Expression Regulation, Bacterial, Mutagenesis, Ion Transport, Gene Deletion, Molecular Chaperones, Two-Hybrid System Techniques, Amino Acid Motifs, Drug Resistance, Bacterial, Protein Interaction Mapping, Cation Transport Proteins
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