Influence on motility of Escherichia coli and Salmonella typhimurium by a naturally occurring conjugative plasmid.
AUTOR(ES)
Bohlin, T
RESUMO
In a collection of 45 R-plasmids, one was found to be associated with loss of motility of its Escherichia coli K-12 and Salmonella typhimurium host bacteria when tested in conventional motility agar. Genetic experiments, as well as analyses of deoxyribonucleic acid, showed that inhibition of motility was caused by a conjugative plasmid that was separate from the R-plasmid. This second plasmid, named pUM5, was fi- and mediated the same type of sex pilus (F-like) as the accompanying R-plasmid but lacked resistance determinants. Preliminary studies indicated that bacterial cells carrying the motility inhibition plasmid pUM5 were still equipped with flagella. The mechanism by which flagellar action is disturbed by the plasmid is presently not known.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=235258Documentos Relacionados
- Adherence of an enteropathogenic strain of Escherichia coli to human intestinal mucosa is mediated by a colicinogenic conjugative plasmid.
- Identification of citrate utilization transposon Tn3411 from a naturally occurring citrate utilization plasmid.
- A novel replicon occurring naturally in Escherichia coli is a phage-plasmid hybrid.
- Conjugative transfer of the naturally occurring plasmids of Acetobacter xylinum by IncP-plasmid-mediated mobilization.
- Characterization of a conjugative staphylococcal mupirocin resistance plasmid.