''Lomovskayavirus'' (synonym ''PhiC31-like viruses'', ''Phic31likevirus'') is a genus of
viruses in the order ''
Caudovirales'', in the family ''
Siphoviridae''. Bacteria serve as natural hosts. There are two species in this genus.
Taxonomy
The following species are recognized:
* ''
Streptomyces virus phiBT1''
* ''
Streptomyces virus phiC31''
Structure
Lomovskayaviruses are
nonenveloped
A viral envelope is the outermost layer of many types of viruses. It protects the genetic material in their life cycle when traveling between host cells. Not all viruses have envelopes.
Numerous human pathogenic viruses in circulation are encase ...
, with a head and tail. The head is about 53 nm in diameter, consisting of 72 capsomers. The tail is long and flexible, at about 100 nm long, 5 nm wide, has a 15 nm wide baseplate and four tail fibers ended by terminal knobs.
Genome
Both species have been fully sequenced. They have about 41-42k nucleotides, with 53 and 55 proteins.
Life cycle
Viral replication is cytoplasmic. The virus attaches to the host cell's adhesion receptors using its terminal fibers, and ejects the viral DNA into the host cytoplasm vi
long flexible tail ejection system Replication follows the replicative transposition model. DNA-templated transcription is the method of transcription. 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. Bacteria serve as the natural host. Transmission routes are passive diffusion.
History
According to
ICTV, the genus ''Phic3unalikevirus'' was first accepted under the name ''PhiC31-like viruses'' i
2004 assigned to family ''
Siphoviridae'' in order ''
Caudovirales''. I
2012 the genus was renamed to ''Phic3unalikevirus''.
The genus was later renamed to ''Lomovskayavirus''.
References
External links
ICTV
{{Use dmy dates, date=April 2017
Siphoviridae
Virus genera