Also found in: Dictionary, Thesaurus, Medical, Wikipedia.


see ArchaebacteriaArchaebacteria
, diverse group of bacteria (prokaryotes), sometimes called the archaea and considered a major group unto themselves. Archaebacteria are contrasted with the Eubacteria, from which they differ biochemically in the arrangement of the bases in their ribosomal RNA and
..... Click the link for more information.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved.
References in periodicals archive ?
The archaea group lack nuclei and membrane-bound organelles.
Hilpert et al [39] found that archaea were insensitive to many antibiotics that inhibit eubacteria and eukaryotes, such as those inhibiting the synthesis or cross-linkage of the peptide subunit of murein or those suppressing RNA synthesis.
That said, the broad distribution of the new lineage of microbes in Yellowstone's thermal features suggests similar habitats played an important role in the evolution of archaea back in the day.
Di HJ, Cameron KC, Shen JP, Winefield CS, O'Callaghan M, Bowatte S (2009) Nitrification driven by bacteria and not archaea in nitrogen rich grassland soils.
Archaea in the Degradation of Organics in Hypersaline Environments
Out of a total of about 2,000 superfamilies of folds, the team found one that was exclusive to archaea and the viruses that infect archaea, 29 shared only by bacteria and the viruses that infect them, and 37 that are exclusive to eukaryotes and their viruses.
These structures revel that eukaryotic and archaea primase have unrelated polymerases fold, showing, however, a high conservation level and a three dimension arrangement of aspartate residues (Guilliam et al., 2015).
They found that Archaea (pronounced ar-KEY-uh) were most abundant in subjects younger than 12 and older than 60.
That is, the biocides kill some types of bacteria, thus enabling other bacteria and archaea to prosper--species that somehow find a way to survive in water that is, on average, four times saltier than the ocean, and under pressures that typically are hundreds of times higher than on the surface of the Earth.
"The three major domains of life are bacteria, archaea and eukaryotes," Edgcomb explained.
These data sources - and many others - were compiled to create the inventory in the IU study, which pulls together 20,376 sampling efforts on bacteria, archaea and microscopic fungi and 14,862 sampling efforts on communities of trees, birds and mammals.