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Preferred term

Archaea  

Type

  • Topical Descriptor

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Entry terms

  • Archaebacteria
  • Archaeobacteria
  • Archaeon
  • Archebacteria

Note

  • in taxonomy, one of the 3 domains of life along with BACTERIA & Eucarya

Scope note

  • One of the three domains of life (the others being BACTERIA and Eukarya), formerly called Archaebacteria under the taxon Bacteria, but now considered separate and distinct. They are characterized by: (1) the presence of characteristic tRNAs and ribosomal RNAs; (2) the absence of peptidoglycan cell walls; (3) the presence of ether-linked lipids built from branched-chain subunits; and (4) their occurrence in unusual habitats. While archaea resemble bacteria in morphology and genomic organization, they resemble eukarya in their method of genomic replication. The domain contains at least four kingdoms: CRENARCHAEOTA; EURYARCHAEOTA; NANOARCHAEOTA; and KORARCHAEOTA.

History note

  • 98(81); ARCHAEA was see ARCHAEOBACTERIA 1995-97

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URI

http://www.yso.fi/onto/mesh/D001105

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