Linked Life Data

8648649

Source:http://linkedlifedata.com/resource/pubmed/id/8648649

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1996-7-25
pubmed:abstractText
Using the experimental system of simian virus 40 (SV40) pseudovirions we have previously shown that SV40 requires a specific DNA element for packaging, ses, which was mapped to the SV40 regulatory region. ses was previously found to play a role in facilitating the nucleosomal rearrangement required for chromatin condensation and viral packaging. Here, the fine structure of ses was investigated by genetic studies. Analyses of ses+ revertants indicated that in order to function, ses must be present in close proximity to the origin of replication (ori), supporting a role in the regulation of the viral life cycle. Fine dissection of ses was performed using a series of plasmids carrying mutations and deletions in this region. The results suggest that multiple DNA elements participate in the SV40 packaging process, including the GC-boxes and elements derived from the enhancer. The elements are redundant, and they can function in various combinations. Packaging efficiency correlated with the number of GC-boxes, known to bind Sp1. In addition, AP-2 binding elements appeared to more important than others. These findings were supported by experiments which showed that packaging was significantly enhanced by adding AP-2 binding sites to plasmids with large deletions and lacking those sites. The results imply that binding of Sp1 and/or AP-2 may participate in the packaging process.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0022-2836
pubmed:author
pubmed:issnType
Print
pubmed:day
31
pubmed:volume
259
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
69-80
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1996
pubmed:articleTitle
The simian virus 40 packaging signal ses is composed of redundant DNA elements which are partly interchangeable.
pubmed:affiliation
Department of Hematology, Hebrew University Hadassah Medical School, Jerusalem, Israel.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't