The Evolution of the Archaebacterial Ribosome

Amino acid sequences of ribosomal proteins S11 from Bacillus stearothermophilus and S19 from Halobacterium marismortui Comparison of the ribosomal protein S11 family

“…Based on this comparison, the evolutionary tree for the ribosomal protein Sll family ( fig.3) has two main branches: one for eubacterial and chloroplast Sl 1, and another for halophilic and eukaryotic proteins. This relationship is consistent with previous results derived from the comparisons of other ribosomal protein families [4,22,23]. Similar results to those presented in fig.3 have recently been obtained from sequence analyses of ribosomal proteins from the archaebacterium Methanococcus vannielii.…”

“…the ribosomal protein L12 family, Correspondence address: T. Hatakeyama, Max-Planck-Institut fur Molekulare Genetik, Ihnestrasse 73, D-1000 Berlin 33 (Dahlem), Germany from a wide range of organisms have been determined. The results are consistent with those from the 5 S rRNAs, indicating that the archaebacterial A-proteins are more related to the eukaryotic than to the eubacterial counterparts [4].…”

Homologies of components of DNA-dependent RNA polymerases of archaebacteria, eukaryotes and eubacteria

“…Since then much additional evidence has been accumulated confirming the idea that there a re two groups of prokaryotes that are no more related to °ne another than either of them is related to the eucyta (i. e. the nuclear plus the cytoplasmic compartment of the e ukaryotes). This evidence includes comparison of differe nt parts of the translation apparatus (Fox et al, 1982;Matheson and Yaguchi, 1982;Yaguchi et al, 1982;Guptc *, 1984;Kessel and Klink, 1982;Cammarano et al, 1985), of the enzymes involved in replication (Prangishvilli and Zillig, 1984;Forterre et al, 1984;Nakayama et al, 1985;Klimczak et al, 1985) and transcription (Zillig * Paper given at the EMBO Workshop on the Molecular Genetics of Archaebacteria, München-Martinsried, June 23 to 26, 1985Schnabel et al, 1983;Huet et al, 1983;Prangishvilli et al, 1982), of cell wall composition (Kandier, 1982) and membrane structure (review by Langworthy et al, 1982).…”

DNA-Dependent RNA Polymerases of the Archaebacteria

“…An increasing body of evidence appears to support this view: Ribosomal A proteins (Matheson and Yaguchi, 1982), EFII (Kessel and Klink, 1982), some characteristics of 5 S rRNA (Fox et ai, 1982) and initiator tRNA (Kuchino et ai, 1982), the occurrence of glycoproteins, and the apparent absence of guanosine tetra-and pentaphosphates resemble the corresponding features in eukaryotes rather than eubacteria.…”