Linked Life Data

7748943

Source:http://linkedlifedata.com/resource/pubmed/id/7748943

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10-11
pubmed:dateCreated
1995-6-22
pubmed:abstractText
The prokaryotic protein HU functions as an accessory factor in many different biochemical reactions. We have characterized the role of HU in assembling the invertasome, an intermediate nucleoprotein complex involved in Hin-mediated site-specific recombination. Formation of this complex requires the looping of intervening DNA segments between sites bound by the Hin recombinase and the Fis protein. HU stimulates this process on substrates containing intervening segments of length < 100 bp. Characterization of the activity of HU in Hin-mediated recombination in vitro and in vivo yields evidence that its role in this reaction is primarily to facilitate the looping of the intervening DNA segment. By using this reaction as an assay, we identify proteins from mammals, yeast, trypanosomes, and wheat which can fulfill the same function in vitro. Using ligase-mediated circularization of short DNA fragments we also show that HU, the high mobility group (HMG) 1 and 2 proteins from mammals, and a protein from yeast can bend DNA extremely efficiently. These results support the view that this ubiquitous class of proteins enhance the assembly of nucleoprotein complexes under conditions of limited DNA flexibility.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0300-9084
pubmed:author
pubmed:issnType
Print
pubmed:volume
76
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
992-1004
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
HU and functional analogs in eukaryotes promote Hin invertasome assembly.
pubmed:affiliation
Molecular Biology Institute, University of California Los Angeles 90024, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't