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Filamentous phage fs1 of Vibrio cholerae O139

N Nakasone1, Y Honma, C Toma

  • 1Department of Bacteriology, University of the Ryukyus, Faculty of Medicine, Okinawa, Japan. noboru@med.u-ryukyu.ac.jp

Insights

Filamentous phage fs1 was isolated from Vibrio cholerae O139. This novel phage, previously identified as fimbriae, has a single-stranded DNA genome and a small peptide capsid.

Area of Science:

  • Microbiology
  • Virology
  • Molecular Biology

Background:

  • Filamentous phage fs1 was isolated from Vibrio cholerae O139.
  • This phage was previously characterized as novel fimbriae.

Purpose of the Study:

  • To characterize the filamentous phage fs1 obtained from Vibrio cholerae O139.
  • To analyze the genomic and structural properties of fs1 phage.

Main Methods:

  • Isolation of filamentous phage fs1 from Vibrio cholerae O139.
  • Analysis of phage genome size and structure.
  • Characterization of phage capsid protein.

Main Results:

  • Lysogenized Vibrio cholerae O139 strains produced large quantities of fs1 phage.
  • The fs1 phage genome consists of 6.5 kb single-stranded DNA.
  • The fs1 phage capsid is composed of a small peptide (approximately 2.5 kDa).

Conclusions:

  • Filamentous phage fs1 is a novel phage associated with Vibrio cholerae O139.
  • fs1 phage possesses a single-stranded DNA genome and a simple protein capsid.

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