Control of Phage Bxb1 Excision by a Novel Recombination Directionality Factor
2006
A Novel Phage Protein Helps Viruses Leave Bacterial DNA
publication
Evidence: moderate
Author Information
Author(s): Pallavi Ghosh, Laura Wasil, Graham Hatfull
Hypothesis
How does the novel phage protein gp47 regulate the excision of phage DNA from bacterial chromosomes?
Conclusion
The study identifies a novel recombination directionality factor, gp47, that regulates the excision of phage DNA from bacterial genomes through unique protein interactions.
Supporting Evidence
- The researchers engineered a strain of phage to study its excision mechanism.
- They confirmed that the excisive recombination was mediated by the Bxb1 integrase and the candidate RDF.
- The gp47 protein was shown to catalyze excisive recombination and inhibit integration.
Takeaway
Scientists found a new protein in a virus that helps it escape from bacteria before it starts making more viruses.
Methodology
The researchers used bioinformatics and experimental methods to isolate and analyze the recombination directionality factor in the phage Bxb1.
Digital Object Identifier (DOI)
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