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Asgard archaea capable of anaerobic hydrocarbon cycling
Univ Texas Austin, Dept Marine Sci, Port Aransas, TX 78373 USA.
Univ Texas Austin, Dept Marine Sci, Port Aransas, TX 78373 USA;Royal Netherlands Inst Sea Res, NIOZ, NL-1797 SZ Den Burg, Netherlands;Univ Utrecht, NL-1797 SZ Den Burg, Netherlands.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Cell and Molecular Biology, Molecular Evolution. Uppsala University, Science for Life Laboratory, SciLifeLab. Univ Paris Sud, Unite Ecol Systemat & Evolut, CNRS, F-91400 Orsay, France.ORCID iD: 0000-0002-0510-8868
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Cell and Molecular Biology, Molecular Evolution. Uppsala University, Science for Life Laboratory, SciLifeLab. Royal Netherlands Inst Sea Res, NIOZ, NL-1797 SZ Den Burg, Netherlands;Univ Utrecht, NL-1797 SZ Den Burg, Netherlands.ORCID iD: 0000-0002-6518-8556
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2019 (English)In: Nature Communications, ISSN 2041-1723, E-ISSN 2041-1723, Vol. 10, article id 1822Article in journal (Refereed) Published
Abstract [en]

Large reservoirs of natural gas in the oceanic subsurface sustain complex communities of anaerobic microbes, including archaeal lineages with potential to mediate oxidation of hydrocarbons such as methane and butane. Here we describe a previously unknown archaeal phylum, Helarchaeota, belonging to the Asgard superphylum and with the potential for hydrocarbon oxidation. We reconstruct Helarchaeota genomes from metagenomic data derived from hydrothermal deep-sea sediments in the hydrocarbon-rich Guaymas Basin. The genomes encode methyl-CoM reductase-like enzymes that are similar to those found in butane-oxidizing archaea, as well as several enzymes potentially involved in alkyl-CoA oxidation and the Wood-Ljungdahl pathway. We suggest that members of the Helarchaeota have the potential to activate and subsequently anaerobically oxidize hydrothermally generated short-chain hydrocarbons.

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NATURE PUBLISHING GROUP , 2019. Vol. 10, article id 1822
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Microbiology
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URN: urn:nbn:se:uu:diva-383164DOI: 10.1038/s41467-019-09364-xISI: 000465200000003PubMedID: 31015394OAI: oai:DiVA.org:uu-383164DiVA, id: diva2:1314886
Funder
Swedish Research Council, 2016-03559EU, European Research Council, 310039-PUZZLE_CELLSwedish Foundation for Strategic Research , SSF-FFL5Swedish Research Council, 2015-04959EU, Horizon 2020, 704263Available from: 2019-05-10 Created: 2019-05-10 Last updated: 2019-05-10Bibliographically approved

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Eme, LauraSpang, AnjaLombard, JonathanEttema, Thijs J. G.
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