Linked Life Data

15763142

Source:http://linkedlifedata.com/resource/pubmed/id/15763142

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2005-3-14
pubmed:abstractText
In the course of a Sendai virus infection, short genome versions (called defective) are frequently produced. These compete with the full length genome for replication (hence called interfering) and decrease the severity of the infection. The portion of the defective genome required for this effect can be limited, much shorter than the size of the defective genome. We postulated then that defective genome size follows from conditions required for their production more than for exerting the protective effect. Therefore, we set up experiments to determine which of the steps involved in their production may require this larger size. We constructed a series of Sendai virus mini-genomes, increasing their size from the smallest possible and we followed their ability to replicate, to amplify through multiples cycles of infection and to be packaged into virus particles, all steps required for their efficient production. We found that the mini-genomes replicated and amplified efficiently regardless of their size. The uptake into virus particles, however, depended on a threshold length. The data suggest no limitation in the ability of the viral RNA polymerase to generate and amplify very short size defective genomes. They however, point to limitations in the ability of short genomes to be packaged into virus particles.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0168-1702
pubmed:author
pubmed:issnType
Print
pubmed:volume
109
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
125-32
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Replication and packaging properties of short Paramyxovirus defective RNAs.
pubmed:affiliation
Department of Microbiology and Molecular Medicine, University of Geneva Medical School, CMU, 1 rue Michel-Servet, CH-1211 Geneva 4, Switzerland.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't