Culexarchaeia, a novel archaeal class of anaerobic generalists inhabiting geothermal environments.
Journal
ISME communications
ISSN: 2730-6151
Titre abrégé: ISME Commun
Pays: England
ID NLM: 9918205372406676
Informations de publication
Date de publication:
20 Sep 2022
20 Sep 2022
Historique:
received:
07
04
2022
accepted:
08
09
2022
revised:
03
09
2022
medline:
20
9
2022
pubmed:
20
9
2022
entrez:
8
11
2023
Statut:
epublish
Résumé
Geothermal environments, including terrestrial hot springs and deep-sea hydrothermal sediments, often contain many poorly understood lineages of archaea. Here, we recovered ten metagenome-assembled genomes (MAGs) from geothermal sediments and propose that they constitute a new archaeal class within the TACK superphylum, "Candidatus Culexarchaeia", named after the Culex Basin in Yellowstone National Park. Culexarchaeia harbor distinct sets of proteins involved in key cellular processes that are either phylogenetically divergent or are absent from other closely related TACK lineages, with a particular divergence in cell division and cytoskeletal proteins. Metabolic reconstruction revealed that Culexarchaeia have the capacity to metabolize a wide variety of organic and inorganic substrates. Notably, Culexarchaeia encode a unique modular, membrane associated, and energy conserving [NiFe]-hydrogenase complex that potentially interacts with heterodisulfide reductase (Hdr) subunits. Comparison of this [NiFe]-hydrogenase complex with similar complexes from other archaea suggests that interactions between membrane associated [NiFe]-hydrogenases and Hdr may be more widespread than previously appreciated in both methanogenic and non-methanogenic lifestyles. The analysis of Culexarchaeia further expands our understanding of the phylogenetic and functional diversity of lineages within the TACK superphylum and the ecology, physiology, and evolution of these organisms in extreme environments.
Identifiants
pubmed: 37938354
doi: 10.1038/s43705-022-00175-8
pii: 10.1038/s43705-022-00175-8
pmc: PMC9723716
doi:
Types de publication
Journal Article
Langues
eng
Pagination
86Subventions
Organisme : National Aeronautics and Space Administration (NASA)
ID : 80NSSC19K1633
Informations de copyright
© 2022. The Author(s).
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