Hapunavirus (taxid:1198976)



Non-enveloped, head-tail structure. Head is about 50 nm in diameter. The tail of about 260 nm in length is contractile, with a small base plate.


linear, circularly permuted dsDNA genome of 38-43 kb with a G+C content of 59%, encoding for about 50 proteins.


Genes are transcribed by operons.



  1. Adsorption: the phage attaches to the target cell 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

(all links/actions below point to uniprot.org website)

3 entries grouped by strain

3 entries

Halomonas phage phiHAP-1 (isolate -/Gulf of Mexico/-/2001) (Bacteriophage phiHAP-1) reference strain

PORTL_BPHA1 Probable portal protein
CAPSD_BPHA1 Major capsid protein (Gene product 5) (gp5) (Major head protein)
TMP_BPHA1 Probable tape measure protein (TMP) (Gene product 23) (gp23)