Evidence map›Paper›PMID 27646286›Full record

ArticleJournal of computer-aided molecular design2016

Blind prediction of distribution in the SAMPL5 challenge with QM based protomer and pK

Frank C Pickard, Gerhard König, Florentina Tofoleanu, Juyong Lee, Andrew C Simmonett, Yihan Shao, Jay W Ponder, Bernard R Brooks

Abstract read
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In one paragraph

Article in Journal of computer-aided molecular design, 2016. 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
–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

17 citing papers in PubMed.

  1. Evaluation of log P, pKJournal of computer-aided molecular design · 2021
    Article
  2. Overview of the SAMPL6 pKJournal of computer-aided molecular design · 2021
    Article
  3. Article
  4. Article
  5. Article
  6. Standard state free energies, not pKJournal of computer-aided molecular design · 2020
    Article
  7. Article
  8. Article
  9. Use of Interaction Energies in QM/MM Free Energy Simulations.Journal of chemical theory and computation · 2019
    Article
  10. Article
  11. Article
  12. SAMPL6 challenge results fromJournal of computer-aided molecular design · 2018
    Article
  13. pKJournal of computer-aided molecular design · 2018
    Article
  14. Article
  15. Origin of pKThe journal of physical chemistry. B · 2017
    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

8 authors.

Frank C PickardLaboratory of Computational Biology, National Institutes of Health - National Heart, Lung and Blood Institute, 5635 Fishers Lane, T-900 Suite, Rockville, MD, 20852, USA. frank.pickard@nih.gov.ORCID 0000-0002-9608-3466
Gerhard KönigLaboratory of Computational Biology, National Institutes of Health - National Heart, Lung and Blood Institute, 5635 Fishers Lane, T-900 Suite, Rockville, MD, 20852, USA.
Florentina TofoleanuLaboratory of Computational Biology, National Institutes of Health - National Heart, Lung and Blood Institute, 5635 Fishers Lane, T-900 Suite, Rockville, MD, 20852, USA.
Juyong LeeLaboratory of Computational Biology, National Institutes of Health - National Heart, Lung and Blood Institute, 5635 Fishers Lane, T-900 Suite, Rockville, MD, 20852, USA.
Andrew C SimmonettLaboratory of Computational Biology, National Institutes of Health - National Heart, Lung and Blood Institute, 5635 Fishers Lane, T-900 Suite, Rockville, MD, 20852, USA.
Yihan ShaoDepartment of Chemistry and Biochemistry, University of Oklahoma, Norman, OK, 73019, USA.
Jay W PonderDepartment of Chemistry, Washington University, St. Louis, MO, 63130, USA.
Bernard R BrooksLaboratory of Computational Biology, National Institutes of Health - National Heart, Lung and Blood Institute, 5635 Fishers Lane, T-900 Suite, Rockville, MD, 20852, USA.

Funding

Development Of Theoretical Methods For Studying Biological MacromoleculesZIAHL001051 · NHLBI · NATIONAL HEART, LUNG, AND BLOOD INSTITUTE · PI BROOKS, BERNARD R · 2009 to 2025
$16.2M
Molecular Dynamics Simulations Of Biological MacromoleculesZIAHL001050 · NHLBI · NATIONAL HEART, LUNG, AND BLOOD INSTITUTE · PI BROOKS, BERNARD R · 2009 to 2025
$12.9M
6 · The paper itself

Abstract

The computation of distribution coefficients between polar and apolar phases requires both an accurate characterization of transfer free energies between phases and proper accounting of ionization and protomerization. We present a protocol for accurately predicting partition coefficients between two immiscible phases, and then apply it to 53 drug-like molecules in the SAMPL5 blind prediction challenge. Our results combine implicit solvent QM calculations with classical MD simulations using the non-Boltzmann Bennett free energy estimator. The OLYP/DZP/SMD method yields predictions that have a small deviation from experiment (RMSD = 2.3 [Formula: see text] D units), relative to other participants in the challenge. Our free energy corrections based on QM protomer and [Formula: see text] calculations increase the correlation between predicted and experimental distribution coefficients, for all methods used. Unfortunately, these corrections are overly hydrophilic, and fail to account for additional effects such as aggregation, water dragging and the presence of polar impurities in the apolar phase. We show that, although expensive, QM-NBB free energy calculations offer an accurate and robust method that is superior to standard MM and QM techniques alone.

Indexed as

Computer SimulationCyclohexanesModels, ChemicalMolecular Dynamics SimulationMolecular StructurePharmaceutical PreparationsQuantum TheorySolubilitySolventsThermodynamicsWaterCyclohexaneCyclohexanesPharmaceutical PreparationsSolventsWaterDistribution coefficientsFree energyImplicit solventNon-Boltzmann BennettPartition coefficientspKaProtomerSAMPL5Tautomer

Identifiers

What OpenQuestion holds

Textmetadata
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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.