Proceedings of the Japan Academy, Series B
Online ISSN : 1349-2896
Print ISSN : 0386-2208
ISSN-L : 0386-2208
Archaebacterial ribosome is a chimera of eubacterial-type RNAs and eukaryotic-type proteins.
Masaru TATENOHideaki KOIKENaoki AMANOYuko OHFUKUMasashi SUZUKI
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JOURNAL FREE ACCESS

1999 Volume 75 Issue 3 Pages 64-69

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Abstract

The three types of archaebacterial ribosomal RNAs, 5S, 16S, and 23S, have been studied in terms of their closest homologues of the non-archaebacterial origin, the numbers of close homologues of eukaryotic and eubacterial organisms, and the insertion and deletion of bases. It is concluded that all the ribosomal RNAs are of eubacterial-type. In contrast, archaebacterial ribosomal proteins have been identified to compose a population that possesses characteristics of eukaryotic-type. Thus the archaebacterial ribosome is a chimera of the eubacterial-type RNAs and the eukaryotic-type proteins.

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