| 词条 | Viunalikevirus |
| 释义 |
| image = | image_width = 300px | virus_group = i | ordo = Caudovirales | familia = Myoviridae | genus = Viunalikevirus | subdivision_ranks = Species | subdivision =
}}Viunalikevirus is a genus of bacteriophages in the Myoviridae family. Currently, this genus contains seven species.[1] CharacterizationMembers of the Viunalikevirus genus share a number of features that are distinguishable from other members of the Myoviridae family. The heads of these phages are icosahedral in nature. Furthermore, their tails are composed of a collared neck (similar in structure to that of a T4 phage), “a sheath surrounding a tail tube or core, a thin base plate, and an adsorption structure” Notably, a series of unique protrusions can be found stemming from the base plate of these organisms.[2] 3 to 4 thick, rounded prongs (located at the bottom of the base plate) and an equal number of thinner, star-like protrusions (attached to the sides of the baseplate via a stalk) have been observed in members of the genus. No other phages that were observed showed similar symmetrical structures. Members of the genus are also similar in terms of genomics. All species in the genus showed above a 75% commonality in protein composition. While “the gene order is strongly conserved in all seven phages…various functional regions are randomly distributed throughout the genome…”.[2] Functional clustering, as observed in other genera of phages, is uniquely absent from Viunalikevirus, and proves to be a defining quality of the genus. Due to the diversity in tail-spike filaments, researchers have suggested that these phages may be capable of infecting a wider range of hosts. One such example has already been observed: the species SFP10 has successfully infected of the Genus Salmonella and of the species E. coli. While all members of the genus possess tail spikes, it is important to note that each species may possess unique spikes, many of which must be further researched to determine their function. Case StudyIn 2013, a study conducted by the University of Pittsburgh dealt with the analysis of the Salmonella phage Det7, a potentially new member of the Viunaviruslike genus (similar to Salmonella P22, of the family Podoviridae). Det7 shares 60 to 90 percent of its nucleotide synthesis with other members of the genus. Testing revealed that the Det7 strain was capable of infecting all hosts affected by Salmonella P22 and 9NA, along with a number of unique host targets.[3] References1. ^{{cite web|last1=Brands|first1=S.J. (comp.)|title=Taxon: Genus Viunalikevirus|url=http://taxonomicon.taxonomy.nl/TaxonTree.aspx?id=2709291|website=The Taxinomicon|publisher=Universal Taxonomic Services, Zwaag, The Netherlands|accessdate=1 June 2014}} {{Taxonbar|from=Q18395606}}2. ^1 {{cite journal|last1=Adriaenssens|first1=Evelien M.|title=A suggested new bacteriophage genus: "Viunalikevirus"|journal=Archives of Virology|date=October 2012|volume=157|issue=10|pages=2035–46|doi=10.1007/s00705-012-1360-5|display-authors=etal|pmid=22707043|pmc=4174289}} 3. ^{{cite thesis |last=Edgar |first=Robert H |title=Evolution of Bacteriophage Host Attachment using DET7 as a Model|date=4 February 2014|publisher=University of Pittsburgh|type=MSc |accessdate=1 June 2014 |url=http://d-scholarship.pitt.edu/20360/}} 1 : Myoviridae |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。