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Titolo:
Characterization of an inducible oxidative stress response in VitreoscillaC-1
Autore:
Youn, MJ; Choi, YY; Park, KI;
Indirizzi:
Chonbuk Natl Univ, Coll Nat Sci, Fac Biol Sci, Chonju 560750, South Korea Chonbuk Natl Univ Chonju South Korea 560750 , Chonju 560750, South Korea
Titolo Testata:
MOLECULES AND CELLS
fascicolo: 2, volume: 11, anno: 2001,
pagine: 204 - 212
SICI:
1016-8478(20010430)11:2<204:COAIOS>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
ESCHERICHIA-COLI; SALMONELLA-TYPHIMURIUM; HYDROGEN-PEROXIDE; HEAT-SHOCK; BACILLUS-SUBTILIS; POSITIVE CONTROL; GENE-EXPRESSION; PROTEINS; INDUCTION; REGULON;
Keywords:
hydrogen peroxide; inducible proteins; oxidative stress; Vitreoscilla;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Park, KI Chonbuk Natl Univ, Coll Nat Sci, Fac Biol Sci, Chonju 560750, South Korea Chonbuk Natl Univ Chonju South Korea 560750 560750, South Korea
Citazione:
M.J. Youn et al., "Characterization of an inducible oxidative stress response in VitreoscillaC-1", MOL CELLS, 11(2), 2001, pp. 204-212

Abstract

Vitreoscilla becomes resistant to killing by hydrogen peroxide and heat shock when pretreated with nonlethal levels of hydrogen peroxide, The pretreated Vitreoscilla cells (60 muM hydrogen peroxide for 120 min) significantlyincreased survival of the lethal dose of 20 mM hydrogen peroxide or heat shock (22 degreesC --> 37 degreesC). This indicates the existence of an adaptive response to oxidative stress. However, cells pretreated,vith 60 muM hydrogen peroxide became nonresistant to a lethal dose of a menadione, This result shows that hydrogen peroxide does not induce cross-resistance to menadione in Vitreoscilla, Furthermore, Vitreoscilla treated with hydrogen peroxide, heat shock, and menadione showed a change in the protein composition,as monitored by a two-dimensional gel analysis. During adaptation to hydrogen peroxide, 12 proteins were induced. Also, 18 new proteins synthesized in response to heat shock were detected by a 2-D gel analysis. The redox-cycling agents also elicited the synthesis of 6 other proteins that were unseen with hydrogen pel oxide.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 11/07/20 alle ore 17:38:59