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Salt-dependent bacteriophage infecting Halobacterium cutirubrum and H. halobium

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Abstract

MOST molecular genetic mechanisms are sensitive to ionic strength. The isolation of phage for Halobacterium allows a study of genetic adaptation in the extremes of ionic strength. The usual requirement for low ion concentrations is reversed in Halobacterium which maintains intracellular KC1 near saturation1. As a result, macromolecular structure may be altered sufficiently to favour genetic mechanisms that occur rarely or not at all in other organisms. The presence of a unique DNA density distribution2 and RNA-dependent RNA-polymerase3 in Halobacterium suggests that such alterations occur.

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Authors and Affiliations

  1. Section of Biochemistry, Molecular and Cell Biology, Cornell University, Ithaca, New York

    A. C. WAIS, M. KON & R. E. MACDONALD

  2. Tufts University School of Medicine, Boston, Massachusetts

    B. D. STOLLAR

Authors
  1. A. C. WAIS
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  2. M. KON
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  3. R. E. MACDONALD
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  4. B. D. STOLLAR
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WAIS, A., KON, M., MACDONALD, R. et al. Salt-dependent bacteriophage infecting Halobacterium cutirubrum and H. halobium. Nature 256, 314–315 (1975). https://doi.org/10.1038/256314a0

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  • DOI: https://doi.org/10.1038/256314a0

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