Cited by 236Origins and Evolution of LifeCO2 Reduction Techniques and CatalystsCarbon dioxide utilization in catalysis

The DOI matches its Crossref record; 52 of the 53 references it cites were found in a registry or an index.

Native iron reduces CO2 to intermediates and end-products of the acetyl-CoA pathway

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Abstract

Autotrophic theories for the origin of life propose that CO 2 was the carbon source for primordial biosynthesis. Among the six known CO 2 fixation pathways in nature, the acetyl-CoA (AcCoA; or Wood-Ljungdahl) pathway is the most ancient, and relies on transition metals for catalysis. Modern microbes that use the AcCoA pathway typically fix CO 2 with electrons from H 2, which requires complex flavin-based electron bifurcation. This presents a paradox: how could primitive metabolic systems have fixed CO 2 before the origin of proteins? Here, we show that native transition metals (Fe 0, Ni 0 and Co 0) selectively reduce CO 2 to acetate and pyruvate-the intermediates and end-products of the AcCoA pathway-in near millimolar concentrations in water over hours to days using 1-40 bar CO 2 and at temperatures from 30 to 100 °C. Geochemical CO 2 fixation from native metals could have supplied critical C 2 and C 3 metabolites before the emergence of enzymes.

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  1. Darling, D. J. The Universal Book of Astronomy 260 (Wiley, Hoboken, 2004).

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Metadata

Authors
Varma, S. J., Muchowska, K. B., Chatelain, P., & Moran, J.
Affiliations
Centre National de la Recherche Scientifique (FR)
Corresponding author
Moran, Joseph
Venue
Nature Ecology & Evolution
Published
2018-04-23
Volume
2
Issue
6
Pages
1019-1024
ISSN
2397-334X (ISSN-L)
OpenAlex
W2799784280
Cited by
235
References
53
Citations by year
2026: 20 · 2025: 22 · 2024: 34 · 2023: 26 · 2022: 35 · 2021: 27 · 2020: 23 · 2019: 26 · 2018: 22
FWCI
13.13
Type
journal article
Language
en
Open access
Locations
  • Nature Ecology & Evolution (publishedVersion)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
  • PubMed (publishedVersion)
  • Helmholtz Centre for Ocean Research Kiel (GEOMAR) (acceptedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • European Commission (HORIZON2020)
  • Agence Nationale de la Recherche (ANR-10-LABX-0026)
  • Université de Strasbourg
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Origins and Evolution of Life
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
  • Physical Sciences › Chemical Engineering › Process Chemistry and Technology › Carbon dioxide utilization in catalysis
Keywords
acetyl-CoA pathway, CO2 fixation, native iron, metal catalysis, CO2 reduction, acetyl-CoA, origin of metabolism
MeSH terms
Acetyl Coenzyme A, Carbon Dioxide, Iron, Oxidation-Reduction

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