Cited by 62RNA and protein synthesis mechanismsOrigins and Evolution of LifeGenomics and Phylogenetic Studies

Comparative Analysis of RNA Families Reveals Distinct Repertoires for Each Domain of Life

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Hoeppner, Marc P., Gardner, Paul P., Poole, Anthony M.·2012·PLoS Computational Biology

Abstract

The RNA world hypothesis, that RNA genomes and catalysts preceded DNA genomes and genetically-encoded protein catalysts, has been central to models for the early evolution of life on Earth. A key part of such models is continuity between the earliest stages in the evolution of life and the RNA repertoires of extant lineages. Some assessments seem consistent with a diverse RNA world, yet direct continuity between modern RNAs and an RNA world has not been demonstrated for the majority of RNA families, and, anecdotally, many RNA functions appear restricted in their distribution. Despite much discussion of the possible antiquity of RNA families, no systematic analyses of RNA family distribution have been performed. To chart the broad evolutionary history of known RNA families, we performed comparative genomic analysis of over 3 million RNA annotations spanning 1446 families from the Rfam 10 database. We report that 99% of known RNA families are restricted to a single domain of life, revealing discrete repertoires for each domain. For the 1% of RNA families/clans present in more than one domain, over half show evidence of horizontal gene transfer (HGT), and the rest show a vertical trace, indicating the presence of a complex protein synthesis machinery in the Last Universal Common Ancestor (LUCA) and consistent with the evolutionary history of the most ancient protein-coding genes. However, with limited interdomain transfer and few RNA families exhibiting demonstrable antiquity as predicted under RNA world continuity, our results indicate that the majority of modern cellular RNA repertoires have primarily evolved in a domain-specific manner.

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Authors
Hoeppner, M. P., Gardner, P. P., & Poole, A. M.
Affiliations
  • Uppsala University (SE)
  • University of Canterbury (NZ)
Corresponding author
  • Hoeppner, Marc P.
  • Gardner, Paul P.
  • Poole, Anthony M.
Venue
PLoS Computational Biology
Published
2012-11-01
Volume
8
Issue
11
Pages
e1002752
ISSN
  • 1553-734X (ISSN-L)
  • 1553-7358
OpenAlex
W2100049196
Cited by
62
References
114
Citations by year
2026: 4 · 2025: 2 · 2024: 3 · 2023: 1 · 2022: 2 · 2021: 6 · 2020: 1 · 2019: 2 · 2018: 6 · 2017: 4 · 2016: 7 · 2015: 9 · 2014: 7 · 2013: 5 · 2012: 2
FWCI
2.95
Type
journal article
Language
en
Open access
Locations
  • PLoS Computational Biology (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • KTH Publication Database DiVA (KTH Royal Institute of Technology) (submittedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
  • UC Research Repository (University of Canterbury) (submittedVersion)
  • arXiv (Cornell University) (cc-by)
Funders
  • Wellcome Trust (WT077044/Z/05/Z)
  • Royal Society
  • Royal Society Te Apārangi
  • Royal Swedish Academy of Sciences
  • Knut och Alice Wallenbergs Stiftelse
  • Stockholms Universitet
  • Marsden Fund (09-UOC-013)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
  • 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
RNA families, RNA world, domains of life, horizontal gene transfer, last universal common ancestor, origin of life, RNA evolution, Rfam, comparative genomics, protein synthesis machinery
MeSH terms
Archaea, Bacteria, Phylogeny, RNA, Genome, Evolution, Molecular, Genomics, Databases, Nucleic Acid, Eukaryota

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