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Properties of a filamentous phage which adsorbs to pili coded by plasmids of the IncI complex
Journal of General Microbiology
|April 1, 1980
Abstract:
A filamentous phage, PR64FS, which adsorbs to tips of I pili was isolated. PR64FS is shorter than the I pilus-adsorbing phage If1 and differs from it in plaque morphology. Phages PR64FS and Ifl are serologically related and, like the latter, PR64FS adsorbs to pili coded by all Inc groups of the I plasmid complex.
Insights
A new filamentous phage, PR64FS, was discovered that attaches to I pili. This phage is distinct from If1 in size and plaque appearance but shares serological traits and adsorption capabilities.
Area of Science:
- Microbiology
- Virology
- Molecular Biology
Background:
- Filamentous phages are viruses that infect bacteria.
- I pili are protein appendages on bacterial surfaces involved in conjugation.
- Specific phage-bacterial interactions are crucial for understanding viral ecology and host specificity.
Purpose of the Study:
- To isolate and characterize a novel filamentous phage that adsorbs to I pili.
- To compare the newly isolated phage with known I pilus-adsorbing phages.
Main Methods:
- Isolation of filamentous phage PR64FS.
- Characterization of phage adsorption to bacterial pili.
- Comparison of phage morphology and plaque characteristics.
- Serological analysis of phage relationships.
Main Results:
- Filamentous phage PR64FS was isolated, adsorbing specifically to the tips of I pili.
- PR64FS is shorter than the previously characterized I pilus-adsorbing phage If1.
- PR64FS and If1 exhibit differences in plaque morphology.
- Phages PR64FS and If1 are serologically related.
- PR64FS adsorbs to pili encoded by all Inc groups of the I plasmid complex, similar to If1.
Conclusions:
- A novel filamentous phage, PR64FS, with specific adsorption to I pili has been identified.
- PR64FS represents a distinct phage entity from If1, despite serological relatedness and similar adsorption patterns to the I plasmid complex.
- Further studies on PR64FS can elucidate mechanisms of phage-pilus interaction and viral diversity.