Linked Life Data

2831970

Source:http://linkedlifedata.com/resource/pubmed/id/2831970

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1988-5-5
pubmed:abstractText
We have used enzymic and chemical probes to search for altered DNA conformations in the 5' flanking region of the gene for a high mobility group protein (HMG-T) from trout. This search was conducted in order to identify potential genetic elements that might be involved in the transcriptional control of the HMG-T gene. We identified, in supercoiled plasmid DNA molecules containing a 900 base pair insert of the 5' region of the gene, an S1-sensitive site situated within an (AT)12 sequence approximately 120 base pairs upstream from the start of the HMG-T gene. Chemical modification of supercoiled DNA with the single-strand-selective reagent bromoacetaldehyde was limited to a region coincident with the S1 nuclease site. T7 endonuclease I, a probe highly specific for four-way helical junctions, cleaved predominantly at the boundaries of the (AT)12 stretch. These data are most consistent with the interpretation that the (AT)12 sequence adopts a cruciform structure when torsionally stressed by negative supercoiling. DNase I footprinting analyses demonstrated that HMG-T protects two regions almost equidistant from the center of the (AT)12 sequence, indicating that HMG-T is a sequence-specific DNA binding protein.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0006-2960
pubmed:author
pubmed:issnType
Print
pubmed:day
26
pubmed:volume
27
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
576-81
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1988
pubmed:articleTitle
Induction by torsional stress of an altered DNA conformation 5' upstream of the gene for a high mobility group protein from trout and specific binding to flanking sequences by the gene product HMG-T.
pubmed:affiliation
Department of Medical Biochemistry, University of Calgary Health Sciences Centre, Alberta, Canada.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't