Non-enveloped, head-tail structure. The capsid that contains contains an inner body is very large, about 145 nm in diameter, with an icosahedral symmetry T=27. The extended tail measures 160 x 35 nm.


Genomes are about 280 kb in size, are circularly permuted and terminally redundant and have a mosaic structure. They contain about 306 genes.


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

7 entries grouped by strain (browse by keywords)

3 entries

Pseudomonas phage phiKZ reference strain

PHUZ_BPDPK Phage tubulin-like protein (PhuZ) (EC 3.6.5.-) (Phage tubulin/FtsZ) (Tubulin-like protein TubZ)
GP105_BPDPK gp105
EXLYS_BPDPK Peptidoglycan hydrolase gp181 (Gene product 181) (Gp181)

2 entries

Pseudomonas phage 201phi2-1 (Pseudomonas chlororaphis phage 201phi2-1) reference strain

PHUZ_BP201 Phage tubulin-like protein (PhuZ) (EC 3.6.5.-) (Phage tubulin/FtsZ) (Tubulin-like protein TubZ)
GP105_BP201 gp105

2 entries

Pseudomonas phage PhiPA3 (Pseudomonas aeruginosa phage PhiPA3) reference strain

PHUZ_BPPA3 Phage tubulin-like protein (PhuZ) (EC 3.6.5.-) (Phage tubulin/FtsZ) (Tubulin-like protein TubZ)
GP105_BPPA3 gp105