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Archaea MeSH Descriptor Data 2026


MeSH Heading
Archaea
Tree Number(s)
B02
Unique ID
D001105
RDF Unique Identifier
http://id.nlm.nih.gov/mesh/D001105
Annotation
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.
Entry Term(s)
Archaebacteria
Archaeobacteria
Archaeon
Archebacteria
Registry Numbers
txid2157
Previous Indexing
Bacteria (1966-1980)
Public MeSH Note
98; see ARCHAEOBACTERIA 1992-97, see ARCHAEBACTERIA 1991, see BACTERIA 1981-90; ARCHAEA was see ARCHAEOBACTERIA 1995-97
History Note
98(81); ARCHAEA was see ARCHAEOBACTERIA 1995-97
Date Introduced
1991/01/01
Last Updated
2020/08/13
Archaea Preferred
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