학술논문
An archaeal origin of eukaryotes supports only two primary domains of life.
Document Type
Article
Source
Subject
*EUKARYOTIC evolution
*ARCHAEBACTERIA genetics
*RIBOSOMAL RNA
*GENETIC translation
*CELLULAR evolution
*ENDOSYMBIOSIS
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Language
ISSN
0028-0836
Abstract
The discovery of the Archaea and the proposal of the three-domains 'universal' tree, based on ribosomal RNA and core genes mainly involved in protein translation, catalysed new ideas for cellular evolution and eukaryotic origins. However, accumulating evidence suggests that the three-domains tree may be incorrect: evolutionary trees made using newer methods place eukaryotic core genes within the Archaea, supporting hypotheses in which an archaeon participated in eukaryotic origins by founding the host lineage for the mitochondrial endosymbiont. These results provide support for only two primary domains of life-Archaea and Bacteria-because eukaryotes arose through partnership between them. [ABSTRACT FROM AUTHOR]