Comprehensive analysis of the origin of eukaryotic genomes
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概要
- 論文の詳細を見る
There is currently no consensus on the evolutionary origin of eukaryotes. In the search of the ancestors of eukaryotes, we analyzed the phylogeny of 46 genomes, including those of 2 eukaryotes, 8 archaea, and 36 eubacteria. To avoid the effects of gene duplications, we used inparalog pairs of genes with orthologous relationships. First, we grouped these inparalogs into the functional categories of the nucleus, cytoplasm, and mitochondria. Next, we counted the sister groups of eukaryotes in prokaryotic phyla and plotted them on a standard phylogenetic tree. Finally, we used Pearson’s chi-square test to estimate the origin of the genomes from specific prokaryotic ancestors. The results suggest the eukaryotic nuclear genome descends from an archaea that was neither euryarchaeota nor crenarchaeota and that the mitochondrial genome descends from α-proteobacteria. In contrast, genes related to the cytoplasm do not appear to originate from a specific group of prokaryotes.
- 日本遺伝学会の論文
- 2008-08-25
著者
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HORIIKE Tokumasa
Department of Biological and Chemical Engineering, Faculty of Engineering, Gunma University
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Hamada Kazuo
Radiance Ware Co.
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Shinozawa T
Department Of Integrative Bioscience And Biomedical Engineering Graduate School Of Advanced Science
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Shinozawa Takao
Department Of Biological And Chemical Engineering Faculty Of Engineering Gunma University
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Horiike Tokumasa
Department Of Integrated Genetics National Institute Of Genetics
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SARUHASHI Satoshi
Department of Integrative Bioscience and Biomedical Engineering, Graduate School of Advanced Science
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MIYATA Daisuke
Department of Economics, Faculty of Commerce and Economics, Chiba University of Commerce
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Saruhashi Satoshi
Department Of Integrative Bioscience And Biomedical Engineering Graduate School Of Advanced Science
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Miyata Daisuke
Department Of Economics Faculty Of Commerce And Economics Chiba University Of Commerce
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