Evidence map›Paper›PMID 29624370›Full record

ArticleJournal of chemical information and modeling2018

Polarizable Force Field for Molecular Ions Based on the Classical Drude Oscillator.

Fang-Yu Lin, Pedro E M Lopes, Edward Harder, Benoît Roux, Alexander D MacKerell

Abstract read
In one paragraph

Article in Journal of chemical information and modeling, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing 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

26 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Evaluating Polarizable Biomembrane Simulations against Experiments.Journal of chemical theory and computation · 2024
    Article
  5. Article
  6. Article
  7. Structures and Dynamics of DNA Mini-Dumbbells Are Force Field Dependent.Journal of chemical theory and computation · 2023
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Recent progress in general force fields of small molecules.Current opinion in structural biology · 2022
    Review
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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.

Fang-Yu LinDepartment of Pharmaceutical Sciences, School of Pharmacy , University of Maryland , 20 Penn Street , Baltimore , Maryland 21201 , United States.
Pedro E M LopesDepartment of Pharmaceutical Sciences, School of Pharmacy , University of Maryland , 20 Penn Street , Baltimore , Maryland 21201 , United States.ORCID 0000-0002-7383-7886
Edward HarderDepartment of Biochemistry and Molecular Biology , University of Chicago , Chicago , Illinois , 60637 , United States.
Benoît RouxDepartment of Biochemistry and Molecular Biology , University of Chicago , Chicago , Illinois , 60637 , United States.ORCID 0000-0002-5254-2712
Alexander D MacKerellDepartment of Pharmaceutical Sciences, School of Pharmacy , University of Maryland , 20 Penn Street , Baltimore , Maryland 21201 , United States.ORCID 0000-0001-8287-6804

Funding

Polarizable Force Field for Proteins and LipidsR01GM072558 · NIGMS · WEILL MEDICAL COLLEGE OF CORNELL UNIV · PI ROUX, BENOIT · 2005 to 2023
$5.1M
Carbohydrate force fields for structure, dynamics and molecular recognitionR01GM070855 · NIGMS · UNIVERSITY OF MARYLAND BALTIMORE · PI MACKERELL, ALEXANDER D · 2005 to 2018
$3.5M
NIGMS NIH HHS R01 GM070855NIGMS NIH HHS R01 GM072558
6 · The paper itself

Abstract

Development of accurate force field parameters for molecular ions in the context of a polarizable energy function based on the classical Drude oscillator is a crucial step toward an accurate polarizable model for modeling and simulations of biological macromolecules. Toward this goal we have undertaken a hierarchical approach in which force field parameter optimization is initially performed for small molecules for which experimental data exists that serve as building blocks of macromolecular systems. Small molecules representative of the ionic moieties of biological macromolecules include the cationic ammonium and methyl substituted ammonium derivatives, imidazolium, guanidinium and methylguanidinium, and the anionic acetate, phenolate, and alkanethiolates. In the present work, parameters for molecular ions in the context of the Drude polarizable force field are optimized and compared to results from the nonpolarizable additive CHARMM general force field (CGenFF). Electrostatic and Lennard-Jones parameters for the model compounds are developed in the context of the polarizable SWM4-NDP water model, with emphasis on assuring that the hydration free energies are consistent with previously reported parameters for atomic ions. The final parameters are shown to be in good agreement with the selected quantum mechanical (QM) and experimental target data. Analysis of the structure of water around the ions reveals substantial differences between the Drude and additive force fields indicating the important role of polarization in dictating the molecular details of aqueous solvation. The presented parameters represent the foundation for the charged functionalities in future generations of the Drude polarizable force field for biological macromolecules as well as for drug-like molecules.

Indexed as

Molecular Dynamics SimulationQuantum TheoryAmmonium CompoundsHydrogen-Ion ConcentrationMolecular ConformationStatic ElectricityThermodynamicsWaterAmmonium CompoundsWater

Identifiers

PMID29624370
PMCPMC5975207

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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.