The strength of the template effect attracting nucleotides to naked DNA
Open accessAbstract
The transmission of genetic information relies on Watson-Crick base pairing between nucleoside phosphates and template bases in template-primer complexes. Enzyme-free primer extension is the purest form of the transmission process, without any chaperon-like effect of polymerases. This simple form of copying of sequences is intimately linked to the origin of life and provides new opportunities for reading genetic information. Here, we report the dissociation constants for complexes between (deoxy)nucleotides and template-primer complexes, as determined by nuclear magnetic resonance and the inhibitory effect of unactivated nucleotides on enzyme-free primer extension. Depending on the sequence context, Kd's range from 280 mM for thymidine monophosphate binding to a terminal adenine of a hairpin to 2 mM for a deoxyguanosine monophosphate binding in the interior of a sequence with a neighboring strand. Combined with rate constants for the chemical step of extension and hydrolytic inactivation, our quantitative theory explains why some enzyme-free copying reactions are incomplete while others are not. For example, for GMP binding to ribonucleic acid, inhibition is a significant factor in low-yielding reactions, whereas for amino-terminal DNA hydrolysis of monomers is critical. Our results thus provide a quantitative basis for enzyme-free copying.
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With single nucleotides, the dissociation constant (>2 mM) requires high concentrations of activated monomers in primer extension reactions.
“With single nucleotides, the dissociation constant (>2 mM) requires high concentrations of activated monomers in the primer extension reactions.21”
From Sequencing of <scp>d</scp>/<scp>l</scp>-DNA and XNA by Templated-Synthesis (2025) · cites this paper as [21]
Free ribonucleotides act as competitive inhibitors of enzyme-free primer extension, blocking the extension site.
“These results are understandable because free ribonucleotides were shown to act as inhibitors of enzyme-free primer extension.”
From Copying of RNA Sequences without Pre‐Activation (2015) · cites this paper as [32]
GMP pairs more strongly than AMP, CMP, and UMP.
“This is the most favorable case among the four copying reactions, as GMP pairs more strongly than the other three ribonucleotides (AMP, CMP, and UMP).”
From Copying of RNA Sequences without Pre‐Activation (2015) · cites this paper as [32]
UMP incorporation opposite adenine was 75% after 2 d at 20 °C.
“When uridine 5′-monophosphate (UMP), the most weakly pairing nucleotide,32 was offered to a primer on a template with adenine as the first templating base, 75 % incorporation occurred after 2 d.”
From Copying of RNA Sequences without Pre‐Activation (2015) · cites this paper as [32]
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“Quantitative simulations of replication scenarios probably should include a matrix of fidelity values and quantitative data on the stalling after misincorporations (41).”
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“21 Conversely, templated reactions (ligation or transfer reactions) have been shown to be possible at much lower concentration, provided the hybridization yields sufficiently long-lived hybridization complex relative to the reaction rate.”
- Authors
- Kervio, E., Claasen, B., Steiner, U. E., & Richert, C.
- Affiliations
- University of Stuttgart (DE)
- University of Konstanz (DE)
- Corresponding author
- Richert, C.
- Venue
- Nucleic Acids Research
- Publisher
- Oxford University Press (OUP)
- Published
- 2014-05-29
- Volume
- 42
- Issue
- 11
- Pages
- 7409-7420
- ISSN
- 0305-1048 (ISSN-L)
- 1362-4962
- PMC
- PMC4066754
- OpenAlex
- W2114044732
- Cited by
- 54
- References
- 9
- Citations by year
- 2026: 1 · 2025: 2 · 2024: 4 · 2023: 6 · 2022: 5 · 2021: 4 · 2020: 4 · 2019: 4 · 2018: 2 · 2017: 7 · 2016: 5 · 2015: 7 · 2014: 3
- FWCI
- 3.15
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Nucleic Acids Research (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- KOPS (University of Konstanz) (submittedVersion, cc-by)
- Funders
- Deutsche Forschungsgemeinschaft (RI 1063/8-2)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA and Nucleic Acid Chemistry
- 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
- Keywords
- template effect, dissociation constant, Watson-Crick base pairing, origin of life, genetic information transfer, DNA hydrolysis
- MeSH terms
- Deoxyribonucleotides, DNA, Templates, Genetic, DNA Primers
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