Sharma Lokendra K, Lu Jianxin, Bai Yidong
Department of Cellular and Structural Biology, University of Texas Health Sciences Center at San Antonio, San Antonio, TX 78229, USA.
Curr Med Chem. 2009;16(10):1266-77. doi: 10.2174/092986709787846578.
Mitochondria are ubiquitous organelles in eukaryotic cells whose primary function is to generate energy supplies in the form of ATP through oxidative phosphorylation. As the entry point for most electrons into the respiratory chain, NADH:ubiquinone oxidoreductase, or complex I, is the largest and least understood component of the mitochondrial oxidative phosphorylation system. Substantial progress has been made in recent years in understanding its subunit composition, its assembly, the interaction among complex I and other respiratory components, and its role in oxidative stress and apoptosis. This review provides an updated overview of the structure of complex I, as well as its cellular functions, and discusses the implication of complex I dysfunction in various human diseases.
线粒体是真核细胞中普遍存在的细胞器,其主要功能是通过氧化磷酸化产生ATP形式的能量供应。作为大多数电子进入呼吸链的入口点,NADH:泛醌氧化还原酶,即复合体I,是线粒体氧化磷酸化系统中最大且了解最少的组分。近年来,在了解其亚基组成、组装、复合体I与其他呼吸组分之间的相互作用以及其在氧化应激和细胞凋亡中的作用方面取得了重大进展。本综述提供了复合体I结构及其细胞功能的最新概述,并讨论了复合体I功能障碍在各种人类疾病中的影响。