Genus Allolevivirus
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Type Species |
Enterobacteria phage Q |
(Q) |
Distinguishing Features
Viruses contain the longer version of the genome. The extra RNA encodes a C terminal extension of the capsid protein arising by occasional suppression of the capsid gene termination codon. The read-through protein present at about 18 copies in the capsid is necessary for infection. There is no separate lysis gene. Cell lysis is ascribed to the A protein. Genome length varies between 4,217 nts for Enterobacteria phage Q (Q) and 4,276 nts for Enterobacteria phage SP (SP) (Fig. 3).
Antigenic Properties
Antigenic specificity is distinct from that of members of the genus Levivirus.
List of Species Demarcation Criteria in the Genus
The major difference between the two species (formerly called subgroup III and IV) is a 90 nts deletion in the maturation protein gene of Enterobacteria phage Q (Q), corresponding to a long bifurcated hairpin. Furthermore, the percentage of amino acid or nucleotide sequence identity is dramatically lower between species than between strains within species. Species can be differentiated immunologically. Species can also be distinguished by sequence-specific antisense probes.
List of Species in the Genus
Official virus species names are in italics. Tentative virus species names, alternative names ( ), strains or serotypes are not italicized. Virus names and assigned abbreviations ( ) are:
Species in the Genus
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Enterobacteria phage FI |
(FI) |
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Enterobacteria phage ID2 |
(ID2) |
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Enterobacteria phage NL95 |
(NL95) |
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Enterobacteria phage SP |
(SP) |
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Enterobacteria phage TW28 |
(TW28) |
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Enterobacteria phage Q |
(Q) |
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Enterobacteria phage M11 |
(M11) |
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Enterobacteria phage MX1 |
(MX1) |
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Enterobacteria phage ST |
(ST) |
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Enterobacteria phage TW18 |
(TW18) |
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Enterobacteria phage VK |
(VK) |
Tentative Species in the Genus
None reported.
List of Unassigned Viruses in the Family
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Acinetobacter phage 205 |
(205) |
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Caulobacter phage ØCb2 |
(ØCb2) |
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Caulobacter phage ØCb4 |
(ØCb4) |
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Caulobacter phage ØCb5 |
(ØCb5) |
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Caulobacter phage ØCb8r |
(ØCb8r) |
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Caulobacter phage ØCb9 |
(ØCb9) |
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Caulobacter phage ØCb12r |
(ØCB12r) |
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Caulobacter phage ØCb23r |
(ØCb23r) |
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Caulobacter phage ØCP2 |
(ØCP2) |
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Caulobacter phage ØCP18 |
(ØCP18) |
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Caulobacter phage ØCr14 |
(ØCr14) |
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Caulobacter phage ØCr28 |
(ØCr28) |
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Enterobacteria phage B6 |
(B6) |
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Enterobacteria phage B7 |
(B7) |
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Enterobacteria phage C-1 |
(C-1) |
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Enterobacteria phage C2 |
(C2) |
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Enterobacteria phage fcan |
(fcan) |
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Enterobacteria phage Folac |
(Folac) |
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Enterobacteria phage I |
(I) |
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Enterobacteria phage M |
(M) |
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Enterobacteria phage pilH |
(pilH) |
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Enterobacteria phage R23 |
(R23) |
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Enterobacteria phage R34 |
(R34) |
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Enterobacteria phage ZG/1 |
(ZG/1) |
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Enterobacteria phage ZIK/1 |
(ZIK/1) |
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Enterobacteria phage ZJ/1 |
(ZJ/1) |
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Enterobacteria phage ZL/3 |
(ZL/3) |
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Enterobacteria phage ZS/3 |
(ZS/3) |
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Enterobacteria phage 15 |
(15) |
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Enterobacteria phage |
() |
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Enterobacteria phage µ2 |
(µ2) |
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Enterobacteria phage  (other enterobacteriophages, with many plasmid specifities, have been reported). |
() |
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Pseudomonas phage 7s |
(7s) |
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Pseudomonas phage PRR1 |
(PRR1) |
Phylogenetic Relationships within the Family
Not available.
Similarity with Other Taxa
Not reported.
Derivation of Names
Levi: from Latin levis, “light”.
