Cold-Shock 310-kD Protein Uncouples Oxidative Phosphorylation in Plant Mitochondria

Cold-Shock 310-kD Protein Uncouples Oxidative Phosphorylation in Plant Mitochondria We studied the effects of cold-shock 310-kD protein (CSP310) isolated from winter rye seedlings on the energetic activity of plant mitochondria. CSP310 was shown to enhance nonphosphorylating respiration and uncoupled oxidative phosphorylation in isolated mitochondria. The uncoupling effect was enhanced with increasing protein concentration. An antibody against CSP310 interfered with the uncoupling effect of CSP310. Free fatty acids were not evidently involved in uncoupling. The physiological role of uncoupling between oxidation and phosphorylation during plant adaptation to low temperatures is discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Cold-Shock 310-kD Protein Uncouples Oxidative Phosphorylation in Plant Mitochondria

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Publisher
Kluwer Academic Publishers-Plenum Publishers
Copyright
Copyright © 2001 by MAIK “Nauka/Interperiodica”
Subject
Life Sciences; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1023/A:1009058800551
Publisher site
See Article on Publisher Site

Abstract

We studied the effects of cold-shock 310-kD protein (CSP310) isolated from winter rye seedlings on the energetic activity of plant mitochondria. CSP310 was shown to enhance nonphosphorylating respiration and uncoupled oxidative phosphorylation in isolated mitochondria. The uncoupling effect was enhanced with increasing protein concentration. An antibody against CSP310 interfered with the uncoupling effect of CSP310. Free fatty acids were not evidently involved in uncoupling. The physiological role of uncoupling between oxidation and phosphorylation during plant adaptation to low temperatures is discussed.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Oct 10, 2004

References

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