Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1985-1-3
pubmed:abstractText
When analysing the antibiotic resistant, temperature-independent derivatives of Proteus mirabilis cells, carrying the plasmid RP1ts12, a derivative of the latter (pRP19.6) with an elevated frequency of integration into E. coli K12 chromosome, has been isolated. The structure and properties of pRP19.6 was studied. As revealed from the data of structural and genetic analyses pRP19.6 is identical to the factor R68.45 described earlier by Haas and Holloway. Similarly to R68.45, the plasmid under study contains two copies of IS21 sequence and mobilises nonconjugative plasmid pBR325 with high efficiency. Using the temperature sensitive replication of pRP19.6, frequency of it's integration into the chromosomes of E. coli rec+ and recA- stains is determined. It is demonstrated that the clones carrying the plasmid in integrated state are Hfr-strains. The possibilities to use the temperature sensitive R68.45 like plasmid for isolation of Hfr-strains in the broad range of gram-negative bacteria and for insertional inactivation of chromosomal genes are discussed.
pubmed:language
rus
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0026-8984
pubmed:author
pubmed:issnType
Print
pubmed:volume
18
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1111-20
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:articleTitle
[Isolation and characteristics of a temperature-sensitive plasmid pRP19.6--an RP1 derivative containing the duplicated IS21 sequence].
pubmed:publicationType
Journal Article, English Abstract