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Viruses and Cell
Structure of cyanophages AS-1L, AS-1K and S-8K
1Goryushin V. A., 1Averkiev A. A., 1Shainskaya O. A.
  1. Institute of Microbiology and Virology, Academy of Sciences of the Ukrainian SSR
    Kiev, USSR


Structural characteristics of two strains of cyanophage AS-1, AS-1L and AS-1K, and of cyanophage S-8K are presented; these cyanophages have the same host range, but differ in their one-step growth cycle and serological relationships. S-8K has an octahedral head, AS-1L and AS-1 K an icosahedral one. All the three cyanophages have a long, contractile tail. The size and arrangement of the head capsomeres are determined; the sheath structure of these cyanophages is supposed to be similar with that of bacteriophage T4. Schematic models are given for the structure of the cyanophages. Cyanophages AS-IL, AS-1K and S-8K belong to the family Myoviridae of the genus Cyanomyovirus.


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