Mesophilic crenarchaeota: proposal for a third archaeal phylum, the Thaumarchaeota
- C. Brochier-Armanet, B. Boussau, S. Gribaldo, P. Forterre
- BiologyNature Reviews Microbiology
- 1 March 2008
It is shown that these mesophilic archaea are different from hyperthermophilic Crenarchaeota and branch deeper than was previously assumed, and should be considered as a third archaeal phylum, which the authors propose to name Thaum archaeota.
An atypical topoisomerase II from archaea with implications for meiotic recombination
It is suggested that Spo11 catalyses the formation of double-strand breaks that initiate meiotic recombination in S. cerevisiae by analogy with the mechanism of action of known type II topoisomerases.
The virophage as a unique parasite of the giant mimivirus
The Sputnik genome is an 18.343-kilobase circular double-stranded DNA and contains genes that are linked to viruses infecting each of the three domains of life Eukarya, Archaea and Bacteria and is classified as a virophage.
Viruses of the Archaea: a unifying view
A unifying view on archaeal viruses is provided, and they are presented as a particular assemblage that is fundamentally different in morphotype and genome from the DNA viruses of the other two domains of life, the Bacteria and Eukarya.
An Alternative Flavin-Dependent Mechanism for Thymidylate Synthesis
It is shown that ThyX (Thy1) proteins of previously unknown function form a large and distinct class of thymidylate synthases, which present a previously uncharacterized target for antimicrobial compounds.
Origin and evolution of DNA topoisomerases.
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.
The Rooting of the Universal Tree of Life Is Not Reliable
All composite protein trees used to root the universal tree of life with updated data sets are revisited and it is suggested that an eukaryotic rooting could be a more fruitful working hypothesis, as it provides a simple explanation to the high genetic similarity of Archaebacteria and Eubacteria inferred from complete genome analysis.
Phylogeny and evolution of the Archaea: one hundred genomes later.
Microviridae Goes Temperate: Microvirus-Related Proviruses Reside in the Genomes of Bacteroidetes
This is the first report indicating that viruses of the Microviridae lysogenize their hosts, andylogenetic analysis of the putative major capsid proteins places the identified proviruses into a group separate from the previously characterized microviruses and gokushoviruses, suggesting that the genetic diversity and host range of bacteriophages in the family Microviraceae is wider than currently appreciated.