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Partial characterization of a cubic Bacillus phage.

H W Ackermann, R Roy, M Martin

    Canadian Journal of Microbiology
    |August 1, 1978
    PubMed
    Summary
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    Researchers partially characterized Bacillus phage Bam35, an icosahedral virus. This Bacillus-specific phage is resistant to UV and lipase but sensitive to heat, chloroform, and ether, with a latent period of 50 minutes and burst size of 39.

    Area of Science:

    • Microbiology
    • Virology
    • Bacteriology

    Background:

    • Bacteriophages are viruses that infect bacteria.
    • Characterizing bacteriophages is crucial for understanding viral diversity and potential applications.

    Purpose of the Study:

    • To perform a partial characterization of the Bacillus phage Bam35.
    • To determine the physical and biological properties of phage Bam35.

    Main Methods:

    • Morphological analysis of the icosahedral phage structure (63 nm diameter).
    • Assessment of phage resistance and sensitivity to various agents (UV, lipase, heat, chloroform, ether).
    • Determination of phage replication parameters (latent period, burst size).

    Main Results:

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  • Phage Bam35 possesses a double capsid with spikes and a tail that appears upon nucleic acid ejection.
  • The phage contains DNA and likely lipids within its inner coat.
  • Bam35 exhibits Bacillus specificity and resistance to UV and lipase, but sensitivity to heat, chloroform, and ether.
  • Observed latent period of 50 minutes and burst size of 39.

    • Conclusions:

    • Phage Bam35 represents a novel virus group, distinct from previously classified phages.
    • Its characteristics suggest potential for further research in phage therapy or genetic studies.
    • The findings contribute to the broader understanding of Bacillus phage diversity and taxonomy.