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Tissue variation of mitochondrial oxidative phosphorylation efficiency in cold-acclimated ducklings

Karine Salin 1 Loïc Teulier 2 Benjamin Rey 3 Jean-Louis Rouanet 2 Yann Voituron 1 Claude H. B. Duchamp 2 Damien Roussel 2 
1 Ecologie, Comportement, Conservation
EHF - Laboratoire d'Ecologie des Hydrosystèmes Fluviaux, Institut de Recherche en Sciences Appliquées et Technologies, LCPE - Laboratoire de Chimie-Physique et d'Electrochimie
Abstract : We investigated the oxidative phosphorylation efficiency of liver and gastrocnemius muscle mitochondria in thermoneutral and cold-acclimated ducklings. The yield of oxidative phosphorylation was lower in muscle than in liver mitochondria, a difference that was associated with a higher proton conductance in muscle mitochondria. Cold exposure did not affect oxidative phosphorylation efficiency or basal proton leak in mitochondria. We conclude that the basal proton conductance of mitochondria may regulate mitochondrial oxidative phosphorylation efficiency, but is not an important contributor to thermogenic processes in cold-acclimated ducklings.
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Submitted on : Monday, January 10, 2011 - 9:31:37 AM
Last modification on : Thursday, April 21, 2022 - 10:45:30 AM


  • HAL Id : halsde-00553848, version 1



Karine Salin, Loïc Teulier, Benjamin Rey, Jean-Louis Rouanet, Yann Voituron, et al.. Tissue variation of mitochondrial oxidative phosphorylation efficiency in cold-acclimated ducklings. Acta Biochimica Polonica, Acta Biochimica Polonica, 2010, 57 (4), pp.409-412. ⟨halsde-00553848⟩



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