Non-enveloped, head-tail structure. Head is about 73 nm in diameter. The tail is contractile (17 x 113 nm), has possibly 8 long straight terminal fibers and a baseplate. The tail exhibits no transverse striations but presents a criss-cross pattern.


Linear, dsDNA genome of about 86 kb, encoding for 131 proteins.


Genes are transcribed by operons.



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

Matching UniProtKB/Swiss-Prot entries

2 entries grouped by strain (browse by keywords)

2 entries

Salmonella phage Felix O1 (isolate Felix O1-VT1) (Bacteriophage Felix O1) reference strain

TMP_BPFO1 Probable tape measure protein (TMP)
CAPSD_BPFO1 Major capsid protein (Gene product 58) (gp58) (Major head protein)