SOS response


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SOS response

[¦es¦ō′es ri‚späns]
(genetics)
A bacterial deoxyribonucleic acid (DNA) repair system in which cell division and DNA replication are blocked, and DNA repair, recombination, and mutation genes are induced.
References in periodicals archive ?
Because secretion systems for Stx are lacking, the release of Stx is mediated through bacterial cell lysis by Stx phages in response to the induction of the SOS response (a cellular response to DNA damage) (11).
SOS response induction by UV was carried out using the UV oven (Bio-Link, Vilber Lourmat, France) equipped with five fluorescent lamps of 8 W each, emitting from 180 to 280 nm with a peak at 254 nm.
But bacteria have a repair system, aptly called the SOS response, to fix DNA breaks.
In this study we demonstrate that curcumin is able to inhibit the SOS response in Escherichia coli induced by levofloxacin.
The Role of a UvrD Helicase and the SOS Response in Pseudomonas syringae pv.
The research reveals for the first time the relation between the bacteria DNA repair system, known as SOS response, and swarming.
The petition was submitted as part of the SOS response to the draft Appropriate Assessment.
edu/EcoGene/EcoWeb) they focused on were the principal mediators of the SOS response, recA (recombinase gene A, locator EC10823) and lexA (lambda excision gene A, locator EC10533); genes with known involvement in the SOS response, ssb (single strand binding gene, locator EC10976), reef (recombinase gene F, locator ECI0828), dinI (damage inducible gene I, locator EC 12670), umuDC (UV mutator gene, locator EC11057); and three sigma factor genes whose function in SOS response is not clearly identified, rpoD (RNA polymerase factor subunit D, locator EC10896), rpoH (RNA polymerase factor subunit H, locator EC10897), and WoS (RNA polymerasc f~actor subunit S, locator EC10510).
This research builds on previous findings that beet armyworm caterpillars elicit a chemical SOS response in plants.
Ciprofloxacin belongs to the SOS-inducing antibiotics, which induce the so called SOS response in bacteria, a response that may lead to induction of resistance to the drug.
Conventional antibiotics can trigger the SOS response in bacteria that actually enhances virulence.
Historically, the expression of bacterial SOS response genes was used for detecting genotoxicity of chemicals.