Evidence map›Paper›PMID 25511552›Full record

ArticleChemphyschem : a European journal of chemical physics and physical chemistry2015

High accuracy of Karplus equations for relating three-bond J couplings to protein backbone torsion angles.

Fang Li, Jung Ho Lee, Alexander Grishaev, Jinfa Ying, Ad Bax

Abstract read
In one paragraph

Article in Chemphyschem : a European journal of chemical physics and physical chemistry, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.9field-weighted citation impact, top 14% 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

18 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
  2. Article
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  5. Article
  6. Ensemble determination by NMR data deconvolution.Nature reviews. Chemistry · 2023
    Review
  7. Characterization of Amyloidogenic Peptide Aggregability in Helical Subspace.Methods in molecular biology (Clifton, N.J.) · 2022
    Article
  8. Article
  9. Fluoro-Aryl Substituted α,βFrontiers in chemistry · 2019
    Article
  10. Developing a molecular dynamics force field for both folded and disordered protein states.Proceedings of the National Academy of Sciences of the United States of America · 2018
    Article
  11. Article
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  13. Article
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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 at 2 institutions in 1 country.

Fang LiLaboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892 (USA).
Jung Ho Lee
Alexander Grishaev
Jinfa Ying
Ad Bax
National Institute of Diabetes and Digestive and Kidney Diseases · USNational Institutes of Health · US

Funding

Methods to accelerate protein structure determination by solution NMRZIADK029046 · NIDDK · NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES · PI BAX, ADRIAAN · 2009 to 2025
$12.8M
Structure and membrane binding of alpha-synucleinZIADK029047 · NIDDK · NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES · PI BAX, ADRIAAN · 2009 to 2018
$5.6M
Intramural NIH HHS ZIA DK029046Intramural NIH HHS ZIA DK029047
6 · The paper itself

Abstract

(3) JC'C' and (3) JHNHα couplings are related to the intervening backbone torsion angle ${\varphi }$ by standard Karplus equations. Although these couplings are known to be affected by parameters other than ${\varphi }$, including H-bonding, valence angles and residue type, experimental results and quantum calculations indicate that the impact of these latter parameters is typically very small. The solution NMR structure of protein GB3, newly refined by using extensive sets of residual dipolar couplings, yields 50-60 % better Karplus equation agreement between ${\varphi }$ angles and experimental (3) JC'C' and (3) JHNHα values than does the high-resolution X-ray structure. In intrinsically disordered proteins, (3) JC'C' and (3) JHNHα couplings can be measured at even higher accuracy, and the impact of factors other than the intervening torsion angle on (3) J will be smaller than in folded proteins, making these couplings exceptionally valuable reporters on the ensemble of ${\varphi }$ angles sampled by each residue.

Indexed as

Nuclear Magnetic Resonance, BiomolecularAlgorithmsAntigens, Tumor-Associated, CarbohydrateHydrogen BondingQuantum TheoryAntigens, Tumor-Associated, CarbohydrateGb3 antigenbackbone torsion anglesDFT calculationsKarplus equationNMR spectroscopyprotein structure

Identifiers

PMID25511552
PMCPMC4329088
OpenAlexW2137824176

What OpenQuestion holds

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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.