Cited by 119Origins and Evolution of LifeRNA and protein synthesis mechanismsEvolution and Genetic Dynamics

The evolutionary transition from RNA to DNA in early cells

Lazcano, A., Guerrero, R., Margulis, L., Oró, J.·1988·Journal of Molecular Evolution

Abstract

The evolution of genetic material can be divided into at least three major phases: first, genomes of "nucleic acid-like" molecules; secondly, genomes of RNA; and finally, double-stranded DNA genomes such as those present in all contemporary cells. Using properties of nucleic acid molecules, we attempt to explain the evolutionary transition from RNA alone as a cellular informational macromolecule prior to the evolution of cell systems based on double-stranded DNA. The idea that ribonucleic acid-based cellular genomes preceded DNA is based on the following: (1) protein synthesis can occur in the absence of DNA but not of RNA; (2) RNA molecules have some catalytic properties; (3) the ubiquity of purine and pyridine nucleotide coenzymes as well as other similar ribonucleotide cofactors in metabolic pathways; and (4) the fact that the biosynthesis of deoxyribonucleotides always proceeds via the enzymatic reduction of ribonucleotides. The "RNA prior to DNA" hypothesis can be further developed by understanding the selective pressures that led to the biosynthesis of deoxyribose, thymine, and proofreading DNA polymerases. Taken together these observations suggest to us that DNA was selected as an informational molecule in cells to stabilize earlier RNA-protein replicating systems.(ABSTRACT TRUNCATED AT 250 WORDS)

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Crossref · 10.1007/bf02101189

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89 of 89 references verified0 citation errors · 0 not checkable

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  • DNA's greater resistance to UV damage may have driven its replacement of RNA.

    “That being stated, subsequent events in life's early history may also themselves be responses to a changing UV flux; for example, the replacement of RNA by DNA may have been driven by DNA's greater resilience to UV damage (Lazcano et al., 1988).”

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Authors
Lazcano, A., Guerrero, R., Margulis, L., & Oró, J.
Affiliations
  • Instituto Politécnico Nacional (MX)
  • Universitat Autònoma de Barcelona (ES)
  • Boston University (US)
Venue
Journal of Molecular Evolution
Published
1988-08
Volume
27
Issue
4
Pages
283-290
ISSN
  • 0022-2844 (ISSN-L)
  • 1432-1432
OpenAlex
W1999289272
Cited by
119
References
90
Citations by year
2026: 1 · 2025: 4 · 2024: 1 · 2023: 2 · 2022: 2 · 2021: 8 · 2020: 4 · 2019: 2 · 2018: 1 · 2017: 3 · 2016: 3 · 2015: 3 · 2014: 7 · 2013: 3 · 2012: 5
FWCI
4.65
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Molecular Evolution (publishedVersion)
  • PubMed (publishedVersion)
  • ScholarWorks@UMassAmherst (University of Massachusetts Amherst) (submittedVersion)
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
origin of life, RNA to DNA transition, RNA world, deoxyribonucleotide synthesis, thymine biosynthesis, RNA degradation, nucleotide cofactors, ribonucleotide reduction
MeSH terms
DNA, Drug Stability, Biological Evolution, Models, Genetic, RNA, Selection, Genetic

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