Chiral encoding may provide a simple solution to the origin of life
Abstract
The route by which the complex and specific molecules of life arose from the 'prebiotic soup' remains an unsolved problem. Evolution provides a large part of the answer, but this requires molecules that can carry information (that is, exist in many variants) and can replicate themselves. The process is commonplace in living organisms, but not so easy to achieve with simple chemical systems. It is especially difficult to contemplate in the chemical chaos of the prebiotic world. Although popular in many quarters, the notion that RNA was the first self-replicator carries many difficulties. Here, we present an alternative view, suggesting that there may be undiscovered self-replication mechanisms possible in much simpler systems. In particular, we highlight the possibility of information coding through stereochemical configurations of substituents in organic polymers. We also show that this coding system leads naturally to enantiopurity, solving the apparent problem of biological homochirality.
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In a template consisting of regions of alternating helicity, the initially formed heterochiral polymer replicates by recognition and ligation of its constituting helical fragments.
“The initially formed heterochiral polymer replicates by recognition and ligation of its constituting helical fragments.422”
From Possible chemical and physical scenarios towards biological homochirality (2022) · cites this paper as [422]
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- Authors
- Brewer, A., & Davis, A. P.
- Affiliations
- University of Bristol (GB)
- Corresponding author
- Davis, Anthony P.
- ORCID
- Davis, Anthony P.
- Venue
- Nature Chemistry
- Published
- 2014-06-20
- Volume
- 6
- Issue
- 7
- Pages
- 569-574
- ISSN
- 1755-4330 (ISSN-L)
- 1755-4349
- OpenAlex
- W2014643441
- Cited by
- 51
- References
- 56
- Citations by year
- 2026: 5 · 2025: 6 · 2024: 13 · 2023: 8 · 2022: 4 · 2021: 1 · 2020: 3 · 2019: 1 · 2018: 1 · 2017: 2 · 2016: 4 · 2015: 3
- FWCI
- 1.62
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Nature Chemistry (publishedVersion)
- PubMed (publishedVersion)
- Bristol Research (University of Bristol) (publishedVersion)
- Explore Bristol Research (submittedVersion)
- Funders
- Leverhulme Trust
- Engineering and Physical Sciences Research Council (EP/K03927X/1)
- 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, stereochemistry, self-replication, homochirality, enantiomeric purity, prebiotic chemistry, RNA, information encoding, organic polymers, enantiomers
- MeSH terms
- Origin of Life, Stereoisomerism, Molecular Structure, Prebiotics
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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