Molecular and General Genetics MGG

, Volume 142, Issue 1, pp 45–55 | Cite as

Gene expression of bacteriophage SPP1

I. Phage directed protein synthesis
  • H. Esche
  • M. Schweiger
  • T. A. Trautner


A total of 23 phage specific proteins (including four head and six tail proteins) could be identified after SDS polyacrylamide gel electrophoresis of extracts from phage SPP1 infected Bacillus subtilis cells. The total molecular weight of the proteins amounts to approximately 1.9×106 daltons, equivalent to the majority of the coding capacity of SPP1 DNA. It can thus be assumed that almost all SPP1 coded proteins have been identified. Protein assignments to phage cistrons were made by analysis of extracts from nonpermissive cells infected with sus-mutants. The SPP1 specified proteins can be subdivided into three groups on the basis of the time of their synthesis during the latent period. Host protein synthesis is not significantly affected by SPP1 infection. Normal expression of host genes appears to be essential for SPP1 growth.


Bacillus Latent Period Bacillus Subtilis Host Gene Normal Expression 
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Copyright information

© Springer-Verlag 1975

Authors and Affiliations

  • H. Esche
    • 1
  • M. Schweiger
    • 1
  • T. A. Trautner
    • 1
  1. 1.Abt. TrautnerMax-Planck-Institut für molekulare GenetikBerlinGermany

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