Linked Life Data

6271452

Source:http://linkedlifedata.com/resource/pubmed/id/6271452

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
1982-1-9
pubmed:databankReference
pubmed:abstractText
Nucleotide sequences have been determined for the 1.5-kb inverted repeats of Tn5 and for their junctions with the central unique region and with host DNA. The primary findings stemming from this analysis are: 1. Integration of Tn5 is accompanied by the duplication of 9 bp of host DNA. 2. Loss of Tn5 occurs by crossover between short, homologous nucleotide sequences near the junction between Tn5 and host DNA. 3. The IR sequences contain long, open translational reading frames that may code for transposase proteins. 4. The two IR sequences differ by a single-base change. This alteration accounts for the two functional differences observed between IRL and IRR: It shortens the reading frame for the transposase gene in IRL, and it improves the efficiency of a promoter for the nearby Km-resistance gene. 5. The NH2 terminus of the structural gene for the Km-resistance gene maps at the very left border of the unique region, i.e., very close to the end of IRL. These results support the view that the inverted repeats of Tn5 stem from two identical copies of an originally independently moving DNA element. In the transposon, one of these, IRL, seems to have evolved toward a close physical and functional linkage with the antibiotic-resistance gene.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0091-7451
pubmed:author
pubmed:issnType
Print
pubmed:volume
45 Pt 1
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
107-13
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed:year
1981
pubmed:articleTitle
Structural analysis of Tn5.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't