Characterization of a bacteriophage related to R-type pyocins.

  title={Characterization of a bacteriophage related to R-type pyocins.},
  author={Makoto Kageyama and T. Shinomiya and Yuhkoh Aihara and Mikihiko Kobayashi},
  journal={Journal of virology},
  volume={32 3},
A bacteriophage with a contractile tail which shows very similar features to R-type pyocins was isolated and characterized. This phage, named PS17,was purified by DEAE-cellulose chromatography and CsCl density gradient centrifugation. It was a DNA-containing phage, and the density of the purified particles in CsCl was found to be 1.468. DNA from this phage had a density of 1.720 in CsCl, indicating its guanine plus cytosine content to be 61.2%. The head was polyhedral, 69 nm in diameter, and… CONTINUE READING

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