Molecular chaperones, stress proteins and redox homeostasis

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98 Citations (Scopus)

Abstract

Protection against oxidative stress is highly interrelated with the function of the most ancient cellular defense system, the network of molecular chaperones, heat shock, or stress-proteins. These ubiquitous, conserved proteins help other proteins and macromolecules to fold or re-fold and reach their final, native conformation. Redox regulation of protein folding becomes especially important during the preparation of extracellular proteins to the outside oxidative milieu, which should take place in a gradual and step-by-step controlled manner in the endoplasmic reticulum or in the periplasm. Several chaperones, such as members of the Hsp33 family in yeast and the plethora of small heat shock proteins as well as one of the major chaperones, Hsp70 are able to act against cytoplasmic oxidative damage. Abrupt changes of cellular redox status lead to chaperone induction. The function of several chaperones is tightly regulated by the surrounding redox conditions. Moreover, our recent data suggest that chaperones may act as a central switchboard for the transmission of redox changes in the life of the cell.

Original languageEnglish
Pages (from-to)249-257
Number of pages9
JournalBioFactors
Volume17
Issue number1-4
DOIs
Publication statusPublished - Jan 1 2003

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ASJC Scopus subject areas

  • Biochemistry
  • Molecular Medicine
  • Clinical Biochemistry

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