Cited by 1,324Protist diversity and phylogenyOrigins and Evolution of LifeGenomics and Phylogenetic Studies

The DOI matches its Crossref record; 97 of the 98 references it cites were found in a registry or an index.

Complex archaea that bridge the gap between prokaryotes and eukaryotes

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Abstract

The origin of the eukaryotic cell remains one of the most contentious puzzles in modern biology. Recent studies have provided support for the emergence of the eukaryotic host cell from within the archaeal domain of life, but the identity and nature of the putative archaeal ancestor remain a subject of debate. Here we describe the discovery of 'Lokiarchaeota', a novel candidate archaeal phylum, which forms a monophyletic group with eukaryotes in phylogenomic analyses, and whose genomes encode an expanded repertoire of eukaryotic signature proteins that are suggestive of sophisticated membrane remodelling capabilities. Our results provide strong support for hypotheses in which the eukaryotic host evolved from a bona fide archaeon, and demonstrate that many components that underpin eukaryote-specific features were already present in that ancestor. This provided the host with a rich genomic 'starter-kit' to support the increase in the cellular and genomic complexity that is characteristic of eukaryotes.

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  1. Jorgensen, S. L. et al. Correlating microbial community profiles with geochemical data in highly stratified sediments from the Arctic Mid-Ocean Ridge. Proc. Natl Acad. Sci.. USA 109, E2846–E2855 (2012) · DOI
  2. Jorgensen, S. L., Thorseth, I. H., Pedersen, R. B., Baumberger, T. & Schleper, C. Quantitative and phylogenetic study of the deep sea archaeal group in sediments of the Arctic Mid-Ocean spreading ridge. Front. Microbiol. 4, 299 (2013) · DOI
  3. Guy, L., Saw, J. H. & Ettema, T. J. The Archaeal Legacy of Eukaryotes: A Phylogenomic Perspective. Cold Spring Harb. Perspect. Biol.. 6, a016022 (2014) · DOI · Paper page
  4. Kawai, M. et al. High frequency of phylogenetically diverse reductive dehalogenase-homologous genes in deep subseafloor sedimentary metagenomes. Front. Microbiol. 5, 80 (2014) · DOI
  5. Ettema, T. J., Lindas, A. C. & Bernander, R. An actin-based cytoskeleton in archaea. Mol. Microbiol.. 80, 1052–1061 (2011) · DOI
  6. Yutin, N., Wolf, M. Y., Wolf, Y. I. & Koonin, E. V. The origins of phagocytosis and eukaryogenesis. Biol. Direct 4, 9 (2009) · DOI · Paper page

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Metadata

Authors
Spang, A., Saw, J. H., Jørgensen, S. L., Zaremba-Niedzwiedzka, K., Martijn, J., Lind, A. E., van Eijk, R., Schleper, C., Guy, L., & Ettema, T. J. G.
Affiliations
  • Uppsala University (SE)
  • University of Bergen (NO)
  • University of Vienna (AT)
Corresponding author
  • Guy, Lionel
  • Ettema, Thijs J. G.
Venue
Nature
Published
2015-05
Volume
521
Issue
7551
Pages
173-179
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1939911045
Cited by
1,324
References
98
Citations by year
2026: 85 · 2025: 88 · 2024: 118 · 2023: 127 · 2022: 116 · 2021: 125 · 2020: 136 · 2019: 117 · 2018: 118 · 2017: 118 · 2016: 118 · 2015: 54
FWCI
58.70
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Socio-Environmental Systems Modeling (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Protist diversity and phylogeny
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Origins and Evolution of Life
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
Keywords
Lokiarchaeota, eukaryotic origin, archaea, membrane remodeling, phylogenomics, cellular complexity
MeSH terms
Actins, Archaea, Arctic Regions, Eukaryotic Cells, Actin Cytoskeleton, Molecular Sequence Data, Phylogeny, Prokaryotic Cells, Evolution, Molecular, Proteome, Monomeric GTP-Binding Proteins, Metagenome, Endosomal Sorting Complexes Required for Transport, Eukaryota, Hydrothermal Vents

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