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Nanoarchaea: representatives of a novel archaeal phylum or a fast-evolving euryarchaeal lineage related to Thermococcales?
- C. Brochier, S. Gribaldo, Y. Zivanovic, F. Confalonieri, P. Forterre
- BiologyGenome Biology
- 14 April 2005
It is indicated that the placement of N. equitans in archaeal phylogenies on the basis of ribosomal protein concatenation may be strongly biased by the coupled effect of its above-average evolutionary rate and lateral gene transfers.
Higher-level classification of the Archaea: evolution of methanogenesis and methanogens.
It is shown that 23 vertically transmitted ribosomal proteins do not support the monophyly of methanogens, and it is proposed that there are two distantly related groups of extant archaea that produce methane, which are named Class I and Class II.
Phylogeny: A non-hyperthermophilic ancestor for Bacteria
It is found that hyperthermophilic bacteria (such as Aquificales and Thermotogales) do not emerge first, suggesting that the Bacteria had a non-hypertherMophilic ancestor, and it seems that Planctomycetales, a phylum with numerous peculiarities, could be the first emerging bacterial group.
Archaeal phylogeny based on ribosomal proteins.
- O. Matte-Tailliez, C. Brochier, P. Forterre, H. Philippe
- BiologyMolecular biology and evolution
- 1 May 2002
A phylogeny based on the fusion of the sequences of the 53 ribosomal proteins present in most of the archaeal species was constructed, remarkably congruent with the rRNA phylogeny, suggesting that both reflected the actual phylogeny of the domain Archaea even if some nodes remained unresolved.
Eubacterial phylogeny based on translational apparatus proteins.
The two tempos of nuclear pore complex evolution: highly adapting proteins in an ancient frozen structure
It is proposed that an NPC very similar to the extant one was already present in at least the last common ancestor of all extant eukaryotes and it would not have undergone major changes since its early origin.
Evolution of the Archaea.
Recently, many new groups of Archaea that have not yet been cultured have been detected by PCR amplification of 16S ribosomal RNA from environmental samples, and the phenotypic and genotypic characterization of these new groups is now a top priority for further studies on archaeal evolution.
An archaeal orthologue of the universal protein Kae1 is an iron metalloprotein which exhibits atypical DNA-binding properties and apurinic-endonuclease activity in vitro
It is shown that the purified Kae1 protein (Pa-Kae1) from Pyrococcus abyssi is an iron-protein with a novel type of ATP-binding site and is a novel and atypical universal DNA interacting protein whose importance could rival those of RecA/Rad51 in the maintenance of genome integrity in all living cells.
Phylogeny of prokaryotes: does it exist and why should we care?