Fumarate-Mediated Persistence of Escherichia coli against Antibiotics.

ABSTRACT: Bacterial persisters are a small fraction of quiescent cells that survive in the presence of lethal concentrations of antibiotics. They can regrow to give rise to a new population that has the same vulnerability to the antibiotics as did the parental population. Although formation of bacterial persisters in the presence of various antibiotics has been documented, the molecular mechanisms by which these persisters tolerate the antibiotics are still controversial. We found that amplification of the fumarate reductase operon (FRD) inEscherichia coliled to a higher frequency of persister formation. The persister frequency ofE. coliwas increased when the cells contained elevated levels of intracellular fumarate. Genetic perturbations of the electron transport chain (ETC), a metabolite supplemen

SUBMITTER: Kim JS 

PROVIDER: S-EPMC4808198 | biostudies-literature | 2016 Apr

REPOSITORIES: biostudies-literature