Evidence map›Paper›PMID 24838568›Full record

ArticleNucleic acids research2014

Force-induced melting of DNA--evidence for peeling and internal melting from force spectra on short synthetic duplex sequences.

Niklas Bosaeus, Afaf H El-Sagheer, Tom Brown, Björn Åkerman, Bengt Nordén

Abstract read
In one paragraph

Article in Nucleic acids research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing 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

15 citing papers in PubMed.

  1. Determinants of dicentric chromosome breakage inbioRxiv : the preprint server for biology · 2026
    Article
  2. Article
  3. Article
  4. Article
  5. Twist-stretch relations in nucleic acids.European biophysics journal : EBJ · 2023
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Single-molecule mechanochemical characterization of E. coli pol III core catalytic activity.Protein science : a publication of the Protein Society · 2017
    Article
  12. Article
  13. Review
  14. Article
  15. 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.

Niklas BosaeusDepartment of Chemical and Biological Engineering, Chalmers University of Technology, Gothenburg S41296, Sweden niklas.bosaeus@chalmers.se.
Afaf H El-SagheerSchool of Chemistry, University of Southampton, Southampton, SO17 1BJ, UK.
Tom BrownSchool of Chemistry, University of Southampton, Southampton, SO17 1BJ, UK.
Björn ÅkermanDepartment of Chemical and Biological Engineering, Chalmers University of Technology, Gothenburg S41296, Sweden.
Bengt NordénDepartment of Chemical and Biological Engineering, Chalmers University of Technology, Gothenburg S41296, Sweden.

Funding

Biotechnology and Biological Sciences Research Council BB/J001694/1sLoLa
6 · The paper itself

Abstract

Overstretching of DNA occurs at about 60-70 pN when a torsionally unconstrained double-stranded DNA molecule is stretched by its ends. During the transition, the contour length increases by up to 70% without complete strand dissociation. Three mechanisms are thought to be involved: force-induced melting into single-stranded DNA where either one or both strands carry the tension, or a B-to-S transition into a longer, still base-paired conformation. We stretch sequence-designed oligonucleotides in an effort to isolate the three processes, focusing on force-induced melting. By introducing site-specific inter-strand cross-links in one or both ends of a 64 bp AT-rich duplex we could repeatedly follow the two melting processes at 5 mM and 1 M monovalent salt. We find that when one end is sealed the AT-rich sequence undergoes peeling exhibiting hysteresis at low and high salt. When both ends are sealed the AT sequence instead undergoes internal melting. Thirdly, the peeling melting is studied in a composite oligonucleotide where the same AT-rich sequence is concatenated to a GC-rich sequence known to undergo a B-to-S transition rather than melting. The construct then first melts in the AT-rich part followed at higher forces by a B-to-S transition in the GC-part, indicating that DNA overstretching modes are additive.

Indexed as

AT Rich SequenceBiomechanical PhenomenaDNANucleic Acid DenaturationNucleic Acid HybridizationOligodeoxyribonucleotidesOsmolar ConcentrationDNAOligodeoxyribonucleotides

Identifiers

PMID24838568
PMCPMC4081069

What OpenQuestion holds

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Registered trials

None linked

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.