Cited by 72RNA and protein synthesis mechanismsOrigins and Evolution of LifeGenomics and Phylogenetic Studies

Rooting the Ribosomal Tree of Life

Fournier, G. P., Gogarten, J. P.·2010·Molecular Biology and Evolution

Abstract

The origin of the genetic code and the rooting of the tree of life (ToL) are two of the most challenging problems in the study of life's early evolution. Although both have been the focus of numerous investigations utilizing a variety of methods, until now, each problem has been addressed independently. Typically, attempts to root the ToL have relied on phylogenies of genes with ancient duplications, which are subject to artifacts of tree reconstruction and horizontal gene transfer, or specific physiological characters believed to be primitive, which are often based on subjective criteria. Here, we demonstrate a unique method for rooting based on the identification of amino acid usage biases comprising the residual signature of a more primitive genetic code. Using a phylogenetic tree of concatenated ribosomal proteins, our analysis of amino acid compositional bias detects a strong and unique signal associated with the early expansion of the genetic code, placing the root of the translation machinery along the bacterial branch.

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Crossref · 10.1093/molbev/msq057

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65 of 65 references verified0 citation errors · 0 not checkable

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  • The earliest amino acids used by life fit a temperate origin, not a hot one.

    “Work on the addition of amino acids to the canonical repertoire suggest that the first amino acids used by life are also consistent with a temperate, rather than hot, origin of life (Brooks et al. 2002;Zeldovich et al. 2007;Fournier and Gogarten 2010).”

    From Environmental Adaptation from the Origin of Life to the Last Universal Common Ancestor (2018) · cites this paper as Fournier and Gogarten 2010

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Authors
Fournier, G. P., & Gogarten, J. P.
Affiliations
University of Connecticut (US)
Corresponding author
Gogarten, J. P.
Venue
Molecular Biology and Evolution
Published
2010-03-01
Volume
27
Issue
8
Pages
1792-1801
ISSN
  • 0737-4038 (ISSN-L)
  • 1537-1719
OpenAlex
W2163186086
Cited by
72
References
65
Citations by year
2026: 3 · 2025: 3 · 2024: 4 · 2023: 4 · 2022: 8 · 2021: 5 · 2020: 5 · 2019: 2 · 2017: 4 · 2016: 3 · 2015: 7 · 2014: 3 · 2013: 3 · 2012: 4
FWCI
2.73
Type
journal article
Language
en
Open access
closed
Locations
  • Molecular Biology and Evolution (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Science Foundation
  • National Aeronautics and Space Administration
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
origin of the genetic code, ribosomal proteins, genetic code expansion, translation machinery, early evolution of life, horizontal gene transfer
MeSH terms
Amino Acid Sequence, Genetic Code, Molecular Sequence Data, Phylogeny, Ribosomal Proteins, Ribosomes, Sequence Alignment, Evolution, Molecular, Gene Transfer, Horizontal

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