Download or read book Mitochondrial Disorders Caused by Nuclear Genes written by Lee-Jun C. Wong and published by Springer Science & Business Media. This book was released on 2012-09-18 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mitochondrial cytopathies are mutations in the inherited maternal mitochondrial genome, or the nuclear DNA-mutation. Mitochondrial respiratory chain disorders (RCD) are a group of genetically and clinically heterogeneous diseases, due to the fact that protein components of the respiratory chain are encoded by both mitochondrial and nuclear genomes and are essential in all cells. In addition, the biogenesis, structure and function of mitochondria, including DNA replication, transcription, and translation, all require nuclear encoded genes. Since mitochondria are present in every cell, every tissue, mitochondrial disorder usually affects multiple organs.