Linked Life Data

7512937

Source:http://linkedlifedata.com/resource/pubmed/id/7512937

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1994-5-23
pubmed:abstractText
In the hin-mediated DNA inversion system, HU facilitates formation of the synaptic complex composed of two recombination sites spaced 996 bp apart and of the enhancer situated between them, by looping the DNA as to promote interaction of Hin invertase with the Fis enhancer factor [Johnson et al., Nature 329 (1987) 462-465]. The HU requirement for the in vivo hin-mediated inversion was demonstrated previously [Wada et al., Gene 76 (1989) 345-352; Hillyard et al., J. Bacteriol. 172 (1990) 5402-5407; Haykinson and Johnson, EMBO J. 12 (1993) 2503-2512] and in the current experiments. This HU action, however, required IHF when H-NS was present in the cell; i.e., the inversion reaction of the hin-invertible DNA fragment carried by the pKK1202R plasmid proceeded efficiently in host cells either deficient in H-NS or in the presence of both H-NS and IHF, but not in the cells depleted for IHF alone. The level of hin mRNA in mutant cells lacking HU or IHF, in which hin inversion did not occur, was normal or slightly increased. When IHF was absent, the stimulating effect of HU on in vitro DNA circle formation of a 125-bp hin fragment between hixL and the enhancer where Fis binds was inhibited by H-NS. The present study provides an example of a multi-component interaction between HU, H-NS and IHF on the hin DNA region, which contains three characteristic sites, a d(A/T)4 stretch and bent DNA site, and two putative IHF-binding sites.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0378-1119
pubmed:author
pubmed:issnType
Print
pubmed:day
8
pubmed:volume
141
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
17-23
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
IHF supresses the inhibitory effect of H-NS on HU function in the hin inversion system.
pubmed:affiliation
Department of Molecular Genetics, Kyoto Pharmaceutical University, Japan.
pubmed:publicationType
Journal Article