Open Accessσ s regulates pLS 1 maintenance in stationary‐phase Escherichia coli
Author(s) -
EspinosaUrgel Manuel,
Chamizo Cristina,
Tormo Antonio
Publication year - 1996
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1996.tb07964.x
Subject(s) - rpos , escherichia coli , plasmid , stationary phase , mutant , biology , strain (injury) , enterobacteriaceae , phase (matter) , genetics , topology (electrical circuits) , chemistry , gene , mathematics , gene expression , chromatography , combinatorics , promoter , organic chemistry , anatomy
We have studied the influence of σ s on the stability and number of copies of the promiscuous plasmid pLSl in Escherichia coli . Our results indicate that pLS1 is less stable and has a lower number of copies in a rpoS mutant than in a wild‐type strain during stationary phase. This behaviour does not seem to be due to differences in the expression of pLS 1 replication regulators, but to be related to plasmid topology.