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Bacteriophages, or phages, are viruses that specifically infect bacteria, utilizing their genetic material to hijack host cellular machinery for replication. DNA bacteriophages employ single-stranded DNA (ssDNA) or double-stranded DNA (dsDNA) genomes. These phages exhibit diverse replication strategies and host interactions, influencing their ecological roles and applications in biotechnology and medicine.ssDNA BacteriophagesssDNA phages, with their small genomes, utilize unique strategies to...
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Bacteriophages, or phages, are viruses that specifically infect bacteria. Among them, T-even bacteriophages, such as T4, exhibit a well-characterized lytic replication cycle in Escherichia coli (E. coli). This process ensures the rapid proliferation of the virus while ultimately leading to the destruction of the bacterial host.Attachment and DNA InjectionThe infection process begins with the recognition and binding of the T4 phage to the E. coli cell surface. Tail fibers of the phage...
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Mycobacteriophage Tarkin: a Cluster E Phage.

Katherine E Cleary1, Anna M Fakhri1, Ethan N Dionne1

  • 1Department of Chemistry and Biochemistry, Providence College, Providence, Rhode Island, USA.

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Mycobacteriophage Tarkin, a novel phage infecting Mycobacterium smegmatis, has a 75,998-bp genome. This phage is classified into cluster E based on its gene content similarity to other mycobacteriophages.

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Area of Science:

  • Microbiology
  • Virology
  • Genomics

Background:

  • Mycobacteriophages are viruses that infect mycobacteria.
  • Mycobacterium smegmatis is a commonly studied non-pathogenic species used in phage research.

Purpose of the Study:

  • To characterize a newly isolated mycobacteriophage, named Tarkin.
  • To determine the genomic features and phylogenetic placement of Mycobacteriophage Tarkin.

Main Methods:

  • Isolation and characterization of a novel mycobacteriophage.
  • Whole-genome sequencing of Mycobacteriophage Tarkin.
  • Bioinformatic analysis of the genome for gene content and phylogenetic grouping.

Main Results:

  • Mycobacteriophage Tarkin was isolated and infects Mycobacterium smegmatis mc2155.
  • The genome sequence of Tarkin is 75,998 base pairs.
  • Tarkin is predicted to contain 142 protein-coding genes and 2 tRNA genes.
  • Phylogenetic analysis based on gene content places Tarkin within cluster E of mycobacteriophages.

Conclusions:

  • Mycobacteriophage Tarkin represents a new addition to the known diversity of mycobacteriophages.
  • The genomic characteristics of Tarkin are consistent with its classification in cluster E.
  • Further studies on Tarkin can contribute to understanding mycobacteriophage biology and evolution.