Evidence map›Paper›PMID 25973536›Full record

ArticleScientific reports2015

Silver (I) as DNA glue: Ag(+)-mediated guanine pairing revealed by removing Watson-Crick constraints.

Steven M Swasey, Leonardo Espinosa Leal, Olga Lopez-Acevedo, James Pavlovich, Elisabeth G Gwinn

Abstract read
In one paragraph

Article in Scientific reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

41 citing papers in PubMed.

  1. Article
  2. Article
  3. Are i-Motif Structures in DNA Compatible with Cytosine-Ag(I)-Cytosine Base Pairs?Angewandte Chemie (International ed. in English) · 2026
    Article
  4. Determination of silver(I)-binding sites in canonical B-DNA by NMR spectroscopy.Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry · 2025
    Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Review
  10. AgNanomaterials (Basel, Switzerland) · 2024
    Article
  11. Article
  12. Article
  13. Article
  14. 6-Pyrazolylpurine and its deaza derivatives as nucleobases for silver(I)-mediated base pairing with pyrimidines.Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry · 2023
    Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Massively Parallel Selection of NanoCluster Beacons.Advanced materials (Deerfield Beach, Fla.) · 2022
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Steven M SwaseyDepartment of Chemistry and Biochemistry, UCSB.
Leonardo Espinosa LealDepartment of Applied Physics, Aalto University, 00076 Aalto, Finland.
Olga Lopez-AcevedoDepartment of Applied Physics, Aalto University, 00076 Aalto, Finland.
James PavlovichDepartment of Chemistry and Biochemistry, UCSB.
Elisabeth G GwinnDepartment of Physics, UCSB, Santa Barbara, CA 93117.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Metal ion interactions with DNA have far-reaching implications in biochemistry and DNA nanotechnology. Ag(+) is uniquely interesting because it binds exclusively to the bases rather than the backbone of DNA, without the toxicity of Hg(2+). In contrast to prior studies of Ag(+) incorporation into double-stranded DNA, we remove the constraints of Watson-Crick pairing by focusing on homo-base DNA oligomers of the canonical bases. High resolution electro-spray ionization mass spectrometry reveals an unanticipated Ag(+)-mediated pairing of guanine homo-base strands, with higher stability than canonical guanine-cytosine pairing. By exploring unrestricted binding geometries, quantum chemical calculations find that Ag(+) bridges between non-canonical sites on guanine bases. Circular dichroism spectroscopy shows that the Ag(+)-mediated structuring of guanine homobase strands persists to at least 90 °C under conditions for which canonical guanine-cytosine duplexes melt below 20 °C. These findings are promising for DNA nanotechnology and metal-ion based biomedical science.

Indexed as

Nucleic Acid ConformationBase PairingCircular DichroismCytosineDNAGuanineModels, MolecularNanotechnologySilverSpectrometry, Mass, Electrospray IonizationThermodynamicsCytosineDNAGuanineSilver

Identifiers

PMID25973536
PMCPMC4431418

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.