Non-enveloped, head-tail structure. The prolate head is 140 nm in length and 70 nm in width. The tail is 140 nm in length, contractile, has 6 long terminal fibers, 6 short spikes and a small base plate.


Linear, dsDNA genome of about 244 kb, with an overall G+C content of 42.6%, encoding for 386 proteins.


Genes are transcribed by operons.



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

Matching UniProtKB/Swiss-Prot entries

9 entries grouped by strain (browse by keywords)

8 entries

Vibrio phage KVP40 (isolate Vibrio parahaemolyticus/Japan/Matsuzaki/1991) (KVP40) (Bacteriophage KVP40) reference strain

TSP_BPKVM Tail sheath protein (TSP)
DPOL_BPKVM DNA-directed DNA polymerase (EC (EC 3.1.11.-) (Gene product 43) (Gp43)
CAPSH_BPKVM Major capsid protein (Gene product 23) (Major head protein) (gp23) [Cleaved into: Mature major ...
BP27_BPKVM Probable baseplate hub protein gp334
CAPSP_BPKVM Capsid vertex protein (Gene product 24) (gp24)
DPA5_BPKVM DNA polymerase processivity component (DNA polymerase accessory protein 45) (Gp45)
PORTL_BPKVM Portal protein (gp20)

1 entry

Vibrio phage KVP40 (Bacteriophage KVP40)

53DR_BPKV4 Putative 5'(3')-deoxyribonucleotidase (EC 3.1.3.-)