''Ceduovirus'' (synonyms ''c2-like viruses'', ''c2-like phages'', ''C2likevirus'') is a genus of
virus
A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea.
Since Dmitri Ivanovsky's 1 ...
es in the family ''
Siphoviridae'', unassigned to a sub-family. Bacteria serve as the natural host, with transmission achieved through passive diffusion. There are 34 species in this genus.
Taxonomy
The following species are recognized:
* ''
Lactococcus virus 05802''
* ''
Lactococcus virus 20R03M''
* ''
Lactococcus virus 37203''
* ''
Lactococcus virus 50102''
* ''
Lactococcus virus 50504''
* ''
Lactococcus virus 5171F''
* ''
Lactococcus virus 62402''
* ''
Lactococcus virus 62403''
* ''
Lactococcus virus 62606''
* ''
Lactococcus virus bIBB14''
* ''
Lactococcus virus bIBBA3''
* ''
Lactococcus virus bIBBAm4''
* ''
Lactococcus virus bIBBE1''
* ''
Lactococcus virus bIBBL12''
* ''
Lactococcus virus bIBBp6-4''
* ''
Lactococcus virus bIL67''
* ''
Lactococcus virus blBB94p4''
* ''
Lactococcus virus c2''
* ''
Lactococcus virus CHPC116''
* ''
Lactococcus virus CHPC122''
* ''
Lactococcus virus CHPC966''
* ''
Lactococcus virus CHPC967''
* ''
Lactococcus virus CHPC972''
* ''
Lactococcus virus CHPC1020''
* ''
Lactococcus virus CHPC1170''
* ''
Lactococcus virus CHPC1182''
* ''
Lactococcus virus CHPC1183''
* ''
Lactococcus virus CHPC1242''
* ''
Lactococcus virus D4410''
* ''
Lactococcus virus D4412''
* ''
Lactococcus virus LacS15''
* ''
Lactococcus virus M5938''
* ''
Lactococcus virus PCB1''
* ''
Lactococcus virus PCS1''
Structure
Ceduoviruses 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 prolate head is about 56 nm long and 41 nm wide and has a collar. The tail is cross-banded, is about 86-111 nm long, 8 nm wide, and has short tail fibers. Genomes are linear, around 22kb in length.
Genome
Some species have been fully sequenced. They range between 22k and 23k nucleotides, with 37 to 39 proteins. Complete genomes are availabl
hereref name=NCBI>
Life cycle
Viral replication is cytoplasmic. The virus attaches to the host cell's adhesion receptors using its terminal fibers, and viral exolysin degrades the cell wall enough to eject the viral DNA into the host cytoplasm vi
Replication follows the DNA strand displacement, via replicative transposition model. DNA templated transcription is the method of transcription. Bacteria serve as the natural host. Transmission routes are passive diffusion.
History
According to
ICTV'
1996report, the genus ''C2likevirus'' was first accepted under the name ''c2-like phages'', assigned only to family ''
Siphoviridae''. The whole family was moved to the newly created order ''
Caudovirales'' in 1998, and the genus was renamed to ''c2-like viruses'' in ICTV'
seventh reportin 1999. I
2012 the genus was renamed again, this time to ''C2likevirus''.
The genus was later renamed to ''Ceduovirus''.
References
External links
ICTV
{{Taxonbar, from=Q18813040
Siphoviridae
Virus genera