Escherichia coli YqhD exhibits aldehyde reductase activity and protects from the harmful effect of lipid peroxidation-derived aldehydes

José Manuel Pérez, Felipe A. Arenas, Gonzalo A. Pradenas, Juan M. Sandoval, Claudio C. Vásquez

Research output: Contribution to journalArticle

108 Citations (Scopus)

Abstract

Evidence that Escherichia coli YqhD is involved in bacterial response to compounds that generate membrane lipid peroxidation is presented. Overexpression of yqhD results in increased resistance to the reactive oxygen species-generating compounds hydrogen peroxide, paraquat, chromate, and potassium tellurite. Increased tolerance was also observed for the lipid peroxidation-derived aldehydes butanaldehyde, propanaldehyde, acrolein, and malondialdehyde and the membrane-peroxidizing compound tert-butylhydroperoxide. Expression of yqhD was also associated with changes in the concentration of intracellular peroxides and cytoplasmic protein carbonyl content and with a reduction in intracellular acrolein levels. When compared with the wild type strain, an yqhD mutant exhibited a sensitive phenotype to all these compounds and also augmented levels of thiobarbituric acid-reactive substances, which may indicate an increased level of lipid peroxidation. Purified YqhD catalyzes the in vitro reduction of acetaldehyde, malondialdehyde, propanaldehyde, butanaldehyde, and acrolein in a NADPH-dependent reaction. Finally, yqhD transcription was induced in cells that had been exposed to conditions favoring lipid peroxidation. Taken together these results indicate that this enzyme may have a physiological function by protecting the cell against the toxic effect of aldehydes derived from lipid oxidation. We speculate that in Escherichia coli YqhD is part of a glutathione-independent, NADPH-dependent response mechanism to lipid peroxidation.

Original languageEnglish (US)
Pages (from-to)7346-7353
Number of pages8
JournalJournal of Biological Chemistry
Volume283
Issue number12
DOIs
StatePublished - Mar 21 2008
Externally publishedYes

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Aldehyde Reductase
Aldehydes
Escherichia coli
Lipid Peroxidation
Acrolein
Lipids
Malondialdehyde
NADP
Chromates
tert-Butylhydroperoxide
Paraquat
Acetaldehyde
Thiobarbituric Acid Reactive Substances
Poisons
Peroxides
Transcription
Membrane Lipids
Hydrogen Peroxide
Glutathione
Reactive Oxygen Species

ASJC Scopus subject areas

  • Biochemistry
  • Cell Biology
  • Molecular Biology

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Escherichia coli YqhD exhibits aldehyde reductase activity and protects from the harmful effect of lipid peroxidation-derived aldehydes. / Pérez, José Manuel; Arenas, Felipe A.; Pradenas, Gonzalo A.; Sandoval, Juan M.; Vásquez, Claudio C.

In: Journal of Biological Chemistry, Vol. 283, No. 12, 21.03.2008, p. 7346-7353.

Research output: Contribution to journalArticle

Pérez, José Manuel ; Arenas, Felipe A. ; Pradenas, Gonzalo A. ; Sandoval, Juan M. ; Vásquez, Claudio C. / Escherichia coli YqhD exhibits aldehyde reductase activity and protects from the harmful effect of lipid peroxidation-derived aldehydes. In: Journal of Biological Chemistry. 2008 ; Vol. 283, No. 12. pp. 7346-7353.
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