Phikzlikevirus (synonym: PhiKZ-like viruses) is a genus of viruses in the family Myoviridae, not assigned to a subfamily. Bacteria serve as the natural host, with transmission achieved through passive diffusion. There are currently three species in this genus, including the type species Pseudomonas phiKZ.[1][2][3]




Phikzlikeviruses are nonenveloped, with a head and tail. The head has icosahedral symmetry (T=27), with a relatively large diameter of about 140  nm. The tail is around 160 nm long, 35 nm wide.[1]


Two of the three species have been fully sequenced and are available from ICTV; the exclusion is Pseudomonas phage Lin68. They range between 211k and 280k nucleotides, with 201 to 306 proteins. The complete genomes, along with one other similar but unclassified genome, are available here.[3]

Life cycle[edit]

The virus attaches to the host cell using its terminal fibers, and ejects the viral DNA into the host cytoplasm via contraction of its tail sheath. Once the viral genes have been replicated, the procapsid is assembled and packed. The tail is then assembled and the mature virions are released via lysis.[1]


According to the ICTV's 2009 report, the genus PhiKZ-like viruses was first accepted as a new genus, at the same time as all three of its contained species. This proposal is available here. In 2012, the name was changed to Phikzlikevirus. This proposal is available here. [2]


  1. ^ a b c "Viral Zone". ExPASy. 
  2. ^ a b ICTV. "Virus Taxonomy: 2013 Release". Retrieved 17 February 2015. 
  3. ^ a b NCBI. "Phikzlikevirus Complete Genomes". Retrieved 17 February 2015. 
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