著者

岩部 直之

出版者

一般社団法人 日本生物物理学会

雑誌

生物物理 (ISSN:05824052)

巻号頁・発行日

vol.31, no.2, pp.91-98, 1991-01-25 (Released:2009-05-25)

参考文献数

21

被引用文献数

1 1

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All extant organisms are thought to be classified into three primary kingdoms, eubacteria, eukaryotes, and archaebacteria. Based on the analyses of a pair of duplicated genes, elongation factors EF-Tu/l α and EF-G/2, and catalytic and noncatalytic subunits of ATPase (ATPsynthase), archaebacteria are more closely related to eukaryotes than eubacteria. While this relatedness is certified, phylogenetic relationship among several major groups of archaebacteria (extreme thermophiles, extreme halophiles, and methanogens) and eukaryotes is still unsettled because the phylOgenetic tree topologies among them vary with the genes analysed. The ambiguous situation suggests that archaebacterial major groups and eukaryotes were diverged during very short period in the long course of evolution.