Evidence map›Paper›PMID 23112748›Full record

ArticleJournal of chemical theory and computation2012

The Amber ff99 Force Field Predicts Relative Free Energy Changes for RNA Helix Formation.

Aleksandar Spasic, John Serafini, David H Mathews

Abstract read
In one paragraph

Article in Journal of chemical theory and computation, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.5field-weighted citation impact, top 19% of its field
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

17 citing papers in PubMed, 43 citations in OpenAlex.

  1. Article
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  7. Flavonones fromInternational journal of molecular sciences · 2018
    Article
  8. Article
  9. Review
  10. Article
  11. Physics-based all-atom modeling of RNA energetics and structure.Wiley interdisciplinary reviews. RNA · 2017
    Review
  12. Blind tests of RNA nearest-neighbor energy prediction.Proceedings of the National Academy of Sciences of the United States of America · 2016
    Article
  13. Article
  14. Stacking in RNA: NMR of Four Tetramers Benchmark Molecular Dynamics.Journal of chemical theory and computation · 2015
    Article
  15. Article
  16. Article
  17. 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

3 authors at 1 institution in 1 country.

Aleksandar SpasicDepartment of Biochemistry & Biophysics and Center for RNA Biology, University of Rochester Medical Center, Rochester, New York.
John Serafini
David H Mathews
University of Rochester Medical Center · US

Funding

Innovations in RNA Structure PredictionR01HG004002 · NHGRI · UNIVERSITY OF ROCHESTER · PI MATHEWS, DAVID H. · 2007 to 2011
$1.7M
NHGRI NIH HHS R01 HG004002
6 · The paper itself

Abstract

The ability of the Amber ff99 force field to predict relative free energies of RNA helix formation was investigated. The test systems were three hexaloop RNA hairpins with identical loops and varying stems. The potential of mean force of stretching the hairpins from the native state to an extended conformation was calculated with umbrella sampling. Because the hairpins have identical loop sequence, the differences in free energy changes are only from the stem composition. The Amber ff99 force field was able to correctly predict the order of stabilities of the hairpins, although the magnitude of the free energy change is larger than that determined by optical melting experiments. The two measurements cannot be compared directly because the unfolded state in the optical melting experiments is a random coil, while the end state in the umbrella sampling simulations was an elongated chain. The calculations can be compared to reference data by using a thermodynamic cycle. By applying the thermodynamic cycle to the transitions between the hairpins using simulations and nearest neighbor data, agreement was found to be within the sampling error of simulations, thus demonstrating that ff99 force field is able to accurately predict relative free energies of RNA helix formation.

Identifiers

PMID23112748
PMCPMC3482406
OpenAlexW2006104075

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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.