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 ?
The tasks within their designation and beyond, included terrorism, militancy in Balochistan, civil disorder in Karachi, frequent escalations at Line of Control, Indian intrigues in league with Afghanistan, taming US mantra of Do More, pressing diplomacy/international commitments, massive reconstruction/rehabilitation work in tribal areas, affected by terrorism, gigantic task of fencing Pak Afghan border, security of CPEC, relief work in natural disasters, help in organizing national events of national importance as of national census, general elections and IPL matches and emergencies calling SOS response etc.
Because the primary mechanism for antibiotic-mediated induction of phage propagation is the SOS response, we also determined the level of recA expression after exposure to bAGPs.
coli DH5[alpha] through its function in the SOS response. RecA protein plays an important role in the coordinated expression of the SOS regulatory system in response to DNA damage.
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 context, exposure to agents which interfere with DNA replication or which are able to cause DNA damages, induces the expression of a set of genes designed SOS response. Most of the SOS related genes are involved in DNA repair, recombination, replication, biofilm formation and cell division (Walker 1987; Michel 2005; Janion 2008).
The Role of a UvrD Helicase and the SOS Response in Pseudomonas syringae pv.
He says that the numerous proofreading systems operate as if they were applying "fuzzy logic," changing the degree of precision in response to the degree of stress, and then he describes the complex SOS response in bacteria, mating in yeast, and cell death (apoptosis) in multicellular organisms to demonstrate this.
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.
miami.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.