Cited by 184Origins and Evolution of LifeRNA and protein synthesis mechanismsEvolution and Genetic Dynamics

The origin of the RNA world: Co-evolution of genes and metabolism

Copley, Shelley D., Smith, Eric, Morowitz, Harold J.·2007·Bioorganic Chemistry

Abstract

Discoveries demonstrating that RNA can serve genetic, catalytic, structural, and regulatory roles have provided strong support for the existence of an RNA World that preceded the origin of life as we know it. Despite the appeal of this idea, it has been difficult to explain how macromolecular RNAs emerged from small molecules available on the early Earth. We propose here a mechanism by which mutual catalysis in a pre-biotic network initiated a progression of stages characterized by ever larger and more effective catalysts supporting a proto-metabolic network, and the emergence of RNA as the dominant macromolecule due to its ability to both catalyze chemical reactions and to be copied in a template-directed manner. This model suggests that many features of modern life, including the biosynthetic pathways leading to simple metabolites, the structures of organic and metal ion cofactors, homochirality, and template-directed replication of nucleic acids, arose long before the RNA World and were retained as pre-biotic systems became more sophisticated.

Integrity signals

Registry

Crossref · 10.1016/j.bioorg.2007.08.001

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41 of 41 references verified0 citation errors · 0 not checkable

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  • The origin of RNA and DNA is intimately linked with proto-metabolic reactions.

    “In this view, present-day metabolism is a direct consequence of prebiotic chemistry, rather than an accidental by-product, and the origin of RNA and DNA is intimately linked with these proto-metabolic reactions (Copley et al., 2007).”

    From The Astrobiology Primer v2.0 (2016) · cites this paper as Copley et al., 2007

  • Present-day metabolism is a direct consequence of prebiotic chemistry, rather than an accidental by-product.

    “In this view, present-day metabolism is a direct consequence of prebiotic chemistry, rather than an accidental by-product, and the origin of RNA and DNA is intimately linked with these proto-metabolic reactions (Copley et al., 2007).”

    From The Astrobiology Primer v2.0 (2016) · cites this paper as Copley et al., 2007

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Authors
Copley, S. D., Smith, E., & Morowitz, H. J.
Affiliations
  • Cooperative Institute for Research in Environmental Sciences (US)
  • Santa Fe Institute (US)
  • George Mason University (US)
Corresponding author
Copley, Shelley D.
Venue
Bioorganic Chemistry
Publisher
Elsevier BV
Published
2007-12
Volume
35
Issue
6
Pages
430-443
ISSN
0045-2068 (ISSN-L)
OpenAlex
W2091007915
Cited by
184
References
41
Citations by year
2026: 5 · 2025: 12 · 2024: 9 · 2023: 9 · 2022: 18 · 2021: 8 · 2020: 7 · 2019: 25 · 2018: 10 · 2017: 9 · 2016: 10 · 2015: 9 · 2014: 4 · 2013: 8 · 2012: 13
FWCI
3.39
Type
journal article
Language
en
Open access
closed
Locations
  • Bioorganic Chemistry (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Origins and Evolution of Life
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
Keywords
RNA world, origin of life, RNA catalysis, homochirality, metal cofactors, biosynthetic pathway, early Earth chemistry
MeSH terms
Origin of Life, Catalysis, Models, Theoretical, RNA, Thermodynamics, Evolution, Molecular

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