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PreprintCited by 1Bacteriophages and microbial interactionsPlant and Fungal Interactions ResearchBacterial Genetics and Biotechnology

The DOI matches its Crossref record; 51 of the 51 references it cites were found in a registry or an index.

A Vibrio cholerae viral satellite maximizes its spread and inhibits phage by remodeling hijacked phage coat proteins into small capsids

Open access

Preprint — published as 10.7554/elife.87611.3

Abstract

Abstract Phage satellites commonly remodel capsids they hijack from the phages they parasitize, but only a few mechanisms regulating the change in capsid size have been reported. Here, we investigated how a satellite from Vibrio cholerae, PLE, remodels the capsid it has been predicted to steal from the phage ICP1 (1). We identified that a PLE-encoded protein, TcaP, is both necessary and sufficient to form small capsids during ICP1 infection. Interestingly, we found that PLE is dependent on small capsids for efficient transduction of its genome, making it the first satellite to have this requirement. ICP1 isolates that escaped TcaP-mediated remodeling acquired substitutions in the coat protein, suggesting an interaction between these two proteins. With a procapsid-like-particle (PLP) assembly platform in Escherichia coli, we demonstrated that TcaP is a bona fide scaffold that regulates the assembly of small capsids. Further, we studied the structure of PLE PLPs using cryogenic electron microscopy and found that TcaP is an external scaffold, that is functionally and somewhat structurally similar to the external scaffold, Sid, encoded by the unrelated satellite P4 (2). Finally, we showed that TcaP is largely conserved across PLEs. Together, these data support a model in which TcaP directs the assembly of small capsids comprised of ICP1 coat proteins, which inhibits the complete packaging of the ICP1 genome and permits more efficient packaging of replicated PLE genomes.

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Crossref · 10.7554/elife.87611.2

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Citations

Cites

Research works printed but not linked: 5

  1. 2021, Bacteriophage ICP1: A Persistent Predator of, Annu. Rev. Virol, 12, 1
  2. 2022, UVC inactivation of pathogenic samples suitable for cryo-EM analysis. Commun, Biol, 5
  3. 2012, Assembly of bacteriophage 80α capsids in a Staphylococcus aureus expression system, Virology, 434, 242, 10.1016/j.virol.2012.08.031 · DOI
  4. 2020, Dominant Vibrio cholerae phage exhibits lysis inhibition sensitive to disruption by a defensive phage satellite, eLife, 9, 1
  5. 2019, Competition between mobile genetic elements drives optimization of a phage-encoded CRISPR-Cas system: Insights from a natural arms race, Philos. Trans. R. Soc. B Biol. Sci, 374, 1

Metadata

Authors
Boyd, C. M., Subramanian, S., Dunham, D. T., Parent, K. N., & Seed, K. D.
Affiliations
  • University of California, Berkeley (US)
  • Michigan State University (US)
Corresponding author
Seed, Kimberley D.
Venue
eLife
Published
2023-11-16
ISSN
2050-084X (ISSN-L)
OpenAlex
W4388722884
Cited by
1
References
51
Citations by year
2024: 1
Type
posted content
Language
en
Open access
Locations
eLife (acceptedVersion, cc-by)
Funders
  • National Institute of Allergy and Infectious Diseases (R01AI127652)
  • National Institutes of Health (GM110185, GM140803, GM116789, T32 GM132022)
  • National Science Foundation Graduate Research Fellowship Program (2018257700)
  • National Science Foundation (1750125)
Topics
  • Life Sciences › Immunology and Microbiology › Virology › Bacteriophages and microbial interactions
  • Life Sciences › Immunology and Microbiology › Virology › Plant and Fungal Interactions Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
Keywords
phage satellites, Vibrio cholerae, TCAP, transduction, capsid assembly, phage packaging, phage inhibition, genome packaging

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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