The plant uncoupling protein homologues: a new family of energy-dissipating proteins in plant mitochondria

被引:46
作者
Hourton-Cabassa, U [1 ]
Matos, AR [1 ]
Zachowski, A [1 ]
Moreau, F [1 ]
机构
[1] Univ Paris 06, CNRS, UMR 7632, Lab Physiol Cellulaire & Mol Plantes, F-75252 Paris 5, France
关键词
fatty acid; oxidative phosphorylation; plant mitochondria; proton transport; UCP;
D O I
10.1016/j.plaphy.2004.01.007
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Uncoupling proteins (UCPs) form a subfamily within the mitochondrial carrier protein family, which catalyze a free fatty acid-mediated proton recycling and an modulate he tightness of coupling between mitochondrial respiration and ATP synthesis, A, in mammalian tissues, UCPs are rather ubiquitous in the plant kingdom and widespread in plant tissues in which they could have various physiological roles, such as heat production or protection against free oxygen radicals. The simultaneous occurrence in plant mitochondria of two putative energy-dissipating systems. namely UCP which dissipates the proton motive force, and alternative oxidase (AOX) which dissipates the redox potential. raises the question of their functional interactions. (C) 2004 Elsevier SAS. All rights reserved.
引用
收藏
页码:283 / 290
页数:8
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