Non-enveloped, head-tail structure. The icosahedral head is about 62-64 nm in diameter. The non-contractile tail is about 116-120 nm in length. there is a 20 nm wide baseplate with spikes.


Linear, dsDNA genome of about 40-43 kb, encoding about 58-69 proteins.




  1. Adsorption: The phage attaches to target cell adhesion receptors through its tail fibers.
  2. Ejection of the viral DNA into host cell cytoplasm by long flexible tail ejection system.
  3. Transcription and translation of early genes.
  4. Replication of genomic DNA.
  5. Transcription and translation of late genes
  6. Assembly of an empty procapsid and packaging of the genome.
  7. Viral tail fiber assembly and viral tail assembly.
  8. Mature virions are released from the cell by lysis.