Unique features of animal mitochondrial translation systems - The non-universal genetic code, unusual features of the translational apparatus and their relevance to human mitochondrial diseases -
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- WATANABE Kimitsuna
- Biomedicinal Information Research Center, National Institute of Advanced Industrial Science and Technology (AIST)
書誌事項
- タイトル別名
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- – The non-universal genetic code, unusual features of the translational apparatus and their relevance to human mitochondrial diseases –
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In animal mitochondria, several codons are non-universal and their meanings differ depending on the species. In addition, the tRNA structures that decipher codons are sometimes unusually truncated. These features seem to be related to the shortening of mitochondrial (mt) genomes, which occurred during the evolution of mitochondria. These organelles probably originated from the endosymbiosis of an aerobic eubacterium into an ancestral eukaryote. It is plausible that these events brought about the various characteristic features of animal mt translation systems, such as genetic code variations, unusually truncated tRNA and rRNA structures, unilateral tRNA recognition mechanisms by aminoacyl-tRNA synthetases, elongation factors and ribosomes, and compensation for RNA deficits by enlarged proteins. In this article, we discuss molecular mechanisms for these phenomena. Finally, we describe human mt diseases that are caused by modification defects in mt tRNAs.<br><br>(Communicated by Takao SEKIYA, M.J.A.)
収録刊行物
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- Proceedings of the Japan Academy. Ser. B: Physical and Biological Sciences
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Proceedings of the Japan Academy. Ser. B: Physical and Biological Sciences 86 (1), 11-39, 2010
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詳細情報 詳細情報について
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- CRID
- 1390001204145647104
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- NII論文ID
- 130000149631
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- NII書誌ID
- AA00785485
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- ISSN
- 13492896
- 03862208
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- NDL書誌ID
- 10547386
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可