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    Biochim Biophys Acta. 2009 Jan;1793(1):78-88. Epub 2008 May 4.

    Assembly of mitochondrial complex I and defects in disease.

    Lazarou M, Thorburn DR, Ryan MT, McKenzie M.

    Source

    Department of Biochemistry, La Trobe University, 3086 Melbourne, Australia.

    Abstract

    Isolated complex I deficiency is the most common cause of respiratory chain dysfunction. Defects in human complex I result in energy generation disorders and they are also implicated in neurodegenerative disease and altered apoptotic signaling. Complex I dysfunction often occurs as a result of its impaired assembly. The assembly process of complex I is poorly understood, complicated by the fact that in mammals, it is composed of 45 different subunits and is regulated by both nuclear and mitochondrial genomes. However, in recent years we have gained new insights into complex I biogenesis and a number of assembly factors involved in this process have also been identified. In most cases, these factors have been discovered through their gene mutations that lead to specific complex I defects and result in mitochondrial disease. Here we review how complex I is assembled and the factors required to mediate this process.

    PMID:
    18501715
    [PubMed - indexed for MEDLINE]

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