Genome Sequences of Mycobacterium smegmatis Phages Fefferhead and ShamWow

Valerie L Dao1, Lily Xia1, Christa T Bancroft1

  • 1Department of Biological Sciences, University of Southern California, Los Angeles, California, USA.

Insights

Two temperate mycobacteriophages, Fefferhead and ShamWow, were characterized. Their genome sizes and predicted gene counts were determined, providing foundational data for these K6 and E cluster phages.

Area of Science:

  • Microbiology
  • Genomics
  • Virology

Background:

  • Mycobacteriophages are viruses that infect Mycobacterium bacteria.
  • Temperate phages can integrate into the host genome or replicate independently.
  • Understanding phage diversity is crucial for developing phage-based therapies.

Purpose of the Study:

  • To characterize two temperate mycobacteriophages: Fefferhead and ShamWow.
  • To determine the genomic features of Fefferhead and ShamWow.
  • To classify these phages within existing clusters.

Main Methods:

  • Genome sequencing and analysis.
  • Gene prediction and annotation.
  • Phylogenetic analysis to determine cluster classification.

Main Results:

  • Fefferhead, a K6 cluster phage, has a genome length of 61,366 bp with 98 predicted genes.
  • ShamWow, an E cluster phage, has a genome length of 75,933 bp with 143 predicted genes, including 3 duplicates.
  • Both phages were confirmed as temperate.

Conclusions:

  • Fefferhead and ShamWow represent novel additions to the characterized temperate mycobacteriophage population.
  • Genomic data provides a basis for further functional studies of these phages.
  • Classification within K6 and E clusters aids in comparative genomics.