Your browser doesn't support javascript.
loading
Replication and segregation of a miniF plasmid during the division cycle of Escherichia coli.
Helmstetter, C E; Thornton, M; Zhou, P; Bogan, J A; Leonard, A C; Grimwade, J E.
Affiliation
  • Helmstetter CE; Department of Biological Sciences, Florida Institute of Technology, Melbourne 32901, USA. chelmste@fit.edu
J Bacteriol ; 179(4): 1393-9, 1997 Feb.
Article in En | MEDLINE | ID: mdl-9023227
ABSTRACT
Replication of the miniF plasmid pML31 was examined during the division cycle of Escherichia coli growing with doubling times between 40 and 90 min at 37 degrees C and compared to the replication of plasmid pBR322 and the minichromosome pAL70. The replication pattern of pML31 was indistinguishable from that of pBR322 at all growth rates and very different from the cell-cycle-specific replication of the minichromosome. It is concluded that both pML31 and pBR322 plasmids can replicate at all stages of the division cycle, with a probability of replication that increases gradually, but perhaps not exponentially, during the cycle. In contrast, the modes of segregation of pML31 and pBR322 plasmids into daughter cells at division appeared to differ, raising the possibility that pML31 may segregate in a nonrandom fashion similar to that of chromosomes and minichromosomes.
Subject(s)

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: DNA, Bacterial / DNA Replication / Escherichia coli / F Factor Language: En Journal: J Bacteriol Year: 1997 Document type: Article Affiliation country:

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: DNA, Bacterial / DNA Replication / Escherichia coli / F Factor Language: En Journal: J Bacteriol Year: 1997 Document type: Article Affiliation country:
...