Environmental Stress and Biochemical Adaptation.
Abstract
The regulation of mitochondrial succinate dehydrogenase under conditions of environmental stress and treatment with diverse class of activators, including ubiquinol, with the common features of 5.4 + 0.8 a have been studied which led to the appreciation of the importance of this enzyme and redox status of ubiquinone in regulation of energy metabolism. The combined action of the two stress hormones, cortisol and noradrenaline, stabilizes the new steady-state levels of the enzymes in the catabolism of aromatic amino acids--tryptophan pyrrolase, tyrosine aminotransferase and phenylalanine hydroxylase. The observations that enzyme induction and body temperature decreased on treatment with some drugs under cold-exposure point to the need of qualification of environmental conditions for specifying drug action. Based on these findings models for chemical thermogenesis, acclimation process and functional role of protein structure has been proposed which are expected to stimulate further experiments. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1977
- Accession Number
- ADA045830
Entities
People
- T. Ramasarma
Organizations
- Indian Institute of Science, Bengaluru