Evidence map›Paper›PMID 12829463›Full record

ArticleBiophysical journal2003

Comparison of calculation and experiment implicates significant electrostatic contributions to the binding stability of barnase and barstar.

Feng Dong, M Vijayakumar, Huan-Xiang Zhou

Open access · bronzeAbstract readComparative StudyEvaluation StudyValidation Study
In one paragraph

Article in Biophysical journal, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers.

0numbers the graph read from it
0cells of the map it votes in
57citing papers in PubMed
4.9field-weighted citation impact, top 4% 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

57 citing papers in PubMed, 133 citations in OpenAlex.

  1. Article
  2. Article
  3. Energetics and kinetics of substrate analog-coupled staphylococcal nuclease folding revealed by a statistical mechanical approach.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  4. The de Rham-Hodge Analysis and Modeling of Biomolecules.Bulletin of mathematical biology · 2020
    Article
  5. Article
  6. Review
  7. Article
  8. Electrostatic effects on the folding stability of FKBP12.Protein engineering, design & selection : PEDS · 2016
    Article
  9. Article
  10. Problems of robustness in Poisson-Boltzmann binding free energies.Journal of chemical theory and computation · 2015
    Article
  11. Article
  12. Variational Implicit Solvation with Poisson-Boltzmann Theory.Journal of chemical theory and computation · 2014
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Poisson-Boltzmann Calculations: van der Waals or Molecular Surface?Communications in computational physics · 2013
    Article
  18. Article
  19. Review
  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

3 authors at 1 institution in 1 country.

Feng DongDepartment of Physics, Florida State University, Tallahassee, Florida 32306, USA.
M Vijayakumar
Huan-Xiang Zhou
Florida State University · US

Funding

THEORY OF PROTEIN/PROTEIN ASSOCIATIONR01GM058187 · NIGMS · FLORIDA STATE UNIVERSITY · PI ZHOU, HUAN-XIANG · 1998 to 2016
$3.7M
NIGMS NIH HHS GM58187NIGMS NIH HHS R01 GM058187
6 · The paper itself

Abstract

The contributions of electrostatic interactions to the binding stability of barnase and barstar were studied by the Poisson-Boltzmann model with three different protocols: a), the dielectric boundary specified as the van der Waals (vdW) surface of the protein along with a protein dielectric constant (epsilon (p)) of 4; b), the dielectric boundary specified as the molecular (i.e., solvent-exclusion (SE)) surface along with epsilon (p) = 4; and c), "SE + epsilon (p) = 20." The "vdW + epsilon (p) = 4" and "SE + epsilon (p) = 20" protocols predicted an overall electrostatic stabilization whereas the "SE + epsilon (p) = 4" protocol predicted an overall electrostatic destabilization. The "vdW + epsilon (p) = 4" protocol was most consistent with experiment. It quantitatively reproduced the observed effects of 17 mutations neutralizing charged residues lining the binding interface and the measured coupling energies of six charge pairs across the interface and reasonably rationalized the experimental ionic strength and pH dependences of the binding constant. In contrast, the "SE + epsilon (p) = 4" protocol predicted significantly larger coupling energies of charge pairs whereas the "SE + epsilon (p) = 20" protocol did not predict any pH dependence. This study calls for further scrutiny of the different Poisson-Boltzmann protocols and demonstrates potential danger in drawing conclusions on electrostatic contributions based on a particular calculation protocol.

Indexed as

Bacterial ProteinsEnergy TransferModels, ChemicalModels, MolecularStatic ElectricityBinding SitesComputer SimulationElectrochemistryEnzyme ActivationEnzyme StabilityHydrogen-Ion ConcentrationKineticsMacromolecular SubstancesProtein BindingProtein ConformationProteinsBacillus amyloliquefaciens ribonucleaseBacterial Proteinsbarstar protein, Bacillus amyloliquefaciensMacromolecular SubstancesProteinsProtein SubunitsRibonucleases

Identifiers

PMID12829463
PMCPMC1303064
OpenAlexW2170735624

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.