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The genome of Nanoarchaeum equitans: Insights into early archaeal evolution and derived parasitism
Open accessAbstract
The hyperthermophile Nanoarchaeum equitans is an obligate symbiont growing in coculture with the crenarchaeon Ignicoccus . Ribosomal protein and rRNA-based phylogenies place its branching point early in the archaeal lineage, representing the new archaeal kingdom Nanoarchaeota. The N. equitans genome (490,885 base pairs) encodes the machinery for information processing and repair, but lacks genes for lipid, cofactor, amino acid, or nucleotide biosyntheses. It is the smallest microbial genome sequenced to date, and also one of the most compact, with 95% of the DNA predicted to encode proteins or stable RNAs. Its limited biosynthetic and catabolic capacity indicates that N. equitans ' symbiotic relationship to Ignicoccus is parasitic, making it the only known archaeal parasite. Unlike the small genomes of bacterial parasites that are undergoing reductive evolution, N. equitans has few pseudogenes or extensive regions of noncoding DNA. This organism represents a basal archaeal lineage and has a highly reduced genome.
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Self-citationLateral gene transfer and the nature of bacterial innovation
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A hot story from comparative genomics: reverse gyrase is the only hyperthermophile-specific protein
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The evolution, function, structure, and expression of the plant sHSPs
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Self-citationA korarchaeal genome reveals insights into the evolution of the Archaea
Elkins, J. G., Podar, M., Graham, D. E., Makarova, K. S., Wolf, Y., Randau, L., Hedlund, B. P., Brochier-Armanet, C., Kunin, V., Anderson, I., et al. (2008) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0801980105 · Cited by 296
Self-citationMetabolic cross-feeding via intercellular nanotubes among bacteria
Pande, S., Shitut, S., Freund, L., Westermann, M., Bertels, F., Colesie, C., Bischofs, I. B., & Kost, C. (2015) · Nature Communications · doi:10.1038/ncomms7238 · Cited by 273
Metadata
- Authors
- Waters, E., Hohn, M. J., Ahel, I., Graham, D. E., Adams, M. D., Barnstead, M., Beeson, K. Y., Bibbs, L., Bolanos, R., Keller, M., Kretz, K., Lin, X., Mathur, E., Ni, J., Podar, M., Richardson, T., Sutton, G. G., Simon, M., Söll, D., Stetter, K. O., Short, J. M., & Noordewier, M.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2003-10-17
- Volume
- 100
- Issue
- 22
- Pages
- 12984-12988
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2067444151
- Cited by
- 518
- References
- 6
- FWCI
- 11.80
- Type
- journal article
- Language
- en
- Open access
- green
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- Waters, E., Hohn, M. J., Ahel, I., Graham, D. E., Adams, M. D., Barnstead, M., Beeson, K. Y., Bibbs, L., Bolanos, R., Keller, M., Kretz, K., Lin, X., Mathur, E., Ni, J., Podar, M., Richardson, T., Sutton, G. G., Simon, M., Söll, D., . . . Noordewier, M. (2003). The genome of Nanoarchaeum equitans: Insights into early archaeal evolution and derived parasitism. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1735403100
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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