Regulation of thermogenesis in plants: the interaction of alternative oxidase and plant uncoupling mitochondrial protein.
Regulation of thermogenesis in plants: the interaction of alternative oxidase and plant uncoupling mitochondrial protein.
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DOI：
10.1111/j.1744-7909.2010.01004.x
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发表时间：
2011
影响因子：
11.4
通讯作者：
Yan Zhu;Jianfei Lu;Jing Wang;Fu-Xun Chen;F. Leng;Hongyu Li
中科院分区：
文献类型：
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作者：
Yan Zhu;Jianfei Lu;Jing Wang;Fu-Xun Chen;F. Leng;Hongyu Li
产热作用是生物体内产生热量的过程。它在植物中很少见，但在某些被子植物中确实存在。热量通过植物线粒体呼吸产生。交替氧化酶（AOXs）和植物解偶联线粒体蛋白（PROPs）作为可能参与线粒体产热的因子，已被广泛研究。AOX和AOXPs普遍存在于植物线粒体的内膜中。它们作为两个主要的能量耗散系统，分别通过耗散H+氧化还原能量和质子电化学梯度（ΔμH+）作为热量来平衡线粒体呼吸和解偶联磷酸化。AOXs和AOXPs在产热植物的恒温产热过程中发挥相似的生理功能。AOX有五种异构体，而AOX有六种异构体。AOXs和CNOPs都是由小的核多基因家族编码的。多种同种型在不同的组织或器官中表达。在高等植物的产热领域已经进行了广泛的研究。在这篇综述中，我们重点关注的参与和调节AOXs和AOXPs在产热。
Thermogenesis is a process of heat production in living organisms. It is rare in plants, but it does occur in some species of angiosperm. The heat is generated via plant mitochondrial respiration. As possible involvement in thermogenesis of mitochondrial factors, alternative oxidases (AOXs) and plant uncoupling mitochondrial proteins (PUMPs) have been well studied. AOXs and PUMPs are ubiquitously present in the inner membrane of plant mitochondria. They serve as two major energy dissipation systems that balance mitochondrial respiration and uncoupled phosphorylation by dissipating the H+ redox energy and proton electrochemical gradient (ΔμH+) as heat, respectively. AOXs and PUMPs exert similar physiological functions during homeothermic heat production in thermogenic plants. AOXs have five isoforms, while PUMPs have six. Both AOXs and PUMPs are encoded by small nuclear multigene families. Multiple isoforms are expressed in different tissues or organs. Extensive studies have been done in the area of thermogenesis in higher plants. In this review, we focus on the involvement and regulation of AOXs and PUMPs in thermogenesis.