Barnyardvirus

VIRION


Non-enveloped, head-tail structure. The icosahedral head is about 320 nm in diameter. The non-contractile tail is about 1800 nm in length. There is a small baseplate and a terminal fiber.

GENOME

Circularly permuted dsDNA genome of about 69-71 kb, containing about 92-109 genes.

GENE EXPRESSION

REPLICATION

CYTOPLASMIC

  1. Adsorption: The phage attaches to target cell adhesion receptors through its tail fiber.
  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.