“Phicd119likevirus”的意思、由来-开放百科全书

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Phicd119likevirus

释义

Taxonomy
Structure
Genome
Life cycle
History
References

{{taxobox
| virus_group = i
| ordo = Caudovirales
| familia = Myoviridae
| subfamilia = Unassigned
| genus = Phicd119likevirus
| type_species = Clostridium phage phiCD119
}}Phicd119likevirus 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 Clostridium phage phiCD119.^[1]^[2]^[3]

Taxonomy

Species:

Clostridium phage phiC2
Clostridium phage phiCD27
Clostridium phage phiCD119 (type species)

Structure

Phicd119likeviruses are nonenveloped, with a head and tail. The head has a diameter of about 50 nm. The tail is around 110 nm long, and is flexible and contractile.^[1]

Genome

All three species have been fully sequenced and are available from ICTV. They range between 50k and 57k nucleotides, with 75 to 82 proteins. The complete genomes are available [https://www.ncbi.nlm.nih.gov/genomes/GenomesGroup.cgi?opt=phage&taxid=1198989 here].^[2]

Life cycle

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]

History

According to the ICTV's 2010–11 report, the genus PhiCD119likevirus was first accepted as a new genus, at the same time as all three of its contained species. This proposal is currently unavailable, as the link seems to be broken. The following year (2012), the name was changed to Phicd119likevirus. This proposal is available here.^[3]

References

1. ^¹²{{cite web|title=Viral Zone|url=http://viralzone.expasy.org/viralzone/all_by_species/2819.html|publisher=ExPASy|accessdate=17 February 2015}}
2. ^¹{{cite web|last1=NCBI|title=Phicd119likevirus Complete Genomes|url=https://www.ncbi.nlm.nih.gov/genomes/GenomesGroup.cgi?opt=phage&taxid=1198989|accessdate=17 February 2015}}
3. ^¹{{cite web|last1=ICTV|title=Virus Taxonomy: 2013 Release|url=http://ictvonline.org/virusTaxonomy.asp|accessdate=17 February 2015}}

1 : Myoviridae

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