Stress Protein Gene Expression in Amphibians

  • John J. Heikkila
  • Adnan Ali
  • Nick Ohan
  • Ying Tam

Abstract

Prokaryotic and eukaryotic organisms respond at the cellular level to environmental or chemical stressors such as elevated temperature, sodium arsenite, or exposure to heavy metals with the expression of a set of heat shock or stress protein (hsp) genes (reviewed by Nover, 1991; Parsell and Lindquist, 1993; Morimoto et al., 1994). A number of hsp gene family members are also expressed normally within the cell and appear to function as molecular chaperones and are involved in protein folding, assembly, and transport. hsp gene expression has also been correlated with the acquisition of thermotolerance. It is likely that during cellular stress hsps bind to and prevent irreversible aggregation or misfolding of damaged or denatured proteins. Therefore, this class of stress proteins is essential under normal growth conditions as well as serving to protect the cell from the adverse effects of stress.

Keywords

Toxicity Carboxyl Polypeptide Pyruvate Luminal 

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Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • John J. Heikkila
    • 1
  • Adnan Ali
    • 1
  • Nick Ohan
    • 1
  • Ying Tam
    • 1
  1. 1.Department of BiologyUniversity of WaterlooWaterlooCanada

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