Evidence map›Paper›PMID 27294370›Full record

ArticleJournal of chemical theory and computation2016

Divalent Ion Dependent Conformational Changes in an RNA Stem-Loop Observed by Molecular Dynamics.

Christina Bergonzo, Kathleen B Hall, Thomas E Cheatham

Abstract read
In one paragraph

Article in Journal of chemical theory and computation, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing 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

21 citing papers in PubMed.

  1. A cooperative effect of ligands, MgThe Journal of biological chemistry · 2026
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  13. Review
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  15. Review
  16. Competitive Binding of MgBiophysical journal · 2018
    Article
  17. Hexahydrated MgBiophysical journal · 2018
    Article
  18. Physics-based all-atom modeling of RNA energetics and structure.Wiley interdisciplinary reviews. RNA · 2017
    Review
  19. How Does MgBiophysical journal · 2017
    Article
  20. MgBiophysical journal · 2017
    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.

Christina BergonzoDepartment of Medicinal Chemistry, College of Pharmacy, University of Utah , Salt Lake City, Utah 84112, United States.
Kathleen B HallDepartment of Biochemistry and Molecular Biophysics, Washington University School of Medicine , St. Louis, Missouri 63110, United States.
Thomas E CheathamDepartment of Medicinal Chemistry, College of Pharmacy, University of Utah , Salt Lake City, Utah 84112, United States.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We compare the performance of five magnesium (Mg(2+)) ion models in simulations of an RNA stem loop which has an experimentally determined divalent ion dependent conformational shift. We show that despite their differences in parametrization and resulting van der Waals terms, including differences in the functional form of the nonbonded potential, when the RNA adopts its folded conformation, all models behave similarly across ten independent microsecond length simulations with each ion model. However, when the entire structure ensemble is accounted for, chelation of Mg(2+) to RNA is seen in three of the five models, most egregiously and likely artifactual in simulations using a 12-6-4 model for the Lennard-Jones potential. Despite the simple nature of the fixed point-charge and van der Waals sphere models employed, and with the exception of the likely oversampled directed chelation of the 12-6-4 potential models, RNA-Mg(2+) interactions via first shell water molecules are surprisingly well described by modern parameters, allowing us to observe the spontaneous conformational shift from Mg(2+) free RNA to Mg(2+) associated RNA structure in unrestrained molecular dynamics simulations.

Indexed as

Computer SimulationModels, MolecularMolecular ConformationMolecular Dynamics SimulationRNARNA

Identifiers

PMID27294370
PMCPMC4944181

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Registered trials

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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.