Evidence map›Paper›PMID 23162382›Full record

ArticleJournal of chemical theory and computation2012

Investigation of the Polymeric Properties of α-Synuclein and Comparison with NMR Experiments: A Replica Exchange Molecular Dynamics Study.

Chitra Narayanan, Daniel S Weinstock, Kuen-Phon Wu, Jean Baum, Ronald M Levy

Abstract read
In one paragraph

Article in Journal of chemical theory and computation, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing 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

13 citing papers in PubMed.

  1. Article
  2. Review
  3. Characterization of Amyloidogenic Peptide Aggregability in Helical Subspace.Methods in molecular biology (Clifton, N.J.) · 2022
    Article
  4. Article
  5. Review
  6. Review
  7. Article
  8. Review
  9. The loss of inhibitory C-terminal conformations in disease associated P123H β-synuclein.Protein science : a publication of the Protein Society · 2016
    Article
  10. Article
  11. Article
  12. Article
  13. Review
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.

Chitra NarayananGraduate Program in Biochemistry, Rutgers University, Piscataway NJ 08854.
Daniel S Weinstock
Kuen-Phon Wu
Jean Baum
Ronald M Levy

Funding

DYNAMICS OF PEPTIDES AND PROTEINSR01GM030580 · NIGMS · TEMPLE UNIV OF THE COMMONWEALTH · PI LEVY, RONALD · 1985 to 2018
$6.1M
Experiments & Computations to Find Aggregation-Prone Ensembles of Alpha-SynucleinR01GM087012 · NIGMS · RUTGERS, THE STATE UNIV OF N.J. · PI BAUM, JEAN S, LEVY, RONALD · 2009 to 2010
$607k
Computer Cluster for Computational and Structural BiologyS10RR022375 · NCRR · RUTGERS, THE STATE UNIV OF N.J. · PI LEVY, RONALD · 2007 to 2007
$291k
NCRR NIH HHS S10 RR022375NIGMS NIH HHS R01 GM030580NIGMS NIH HHS R01 GM087012
6 · The paper itself

Abstract

Intrinsically disordered proteins (IDPs) have been shown to be involved in a number of cellular functions, in addition to their predominance in diseased states. α-synuclein may be described as one such IDP implicated in the pathology of Parkinson's disease. Understanding the conformational characteristics of the monomeric state of α-synuclein is necessary for understanding the role of the monomer conformation in aggregation. Polymer theories have been applied to investigate the statistical properties of homopolymeric IDPs. Here we use Replica Exchange Molecular Dynamics (REMD) simulations using temperature as a proxy for solvent quality to examine how well these theories developed for homopolymeric chains describe heteropolymeric α-synuclein. Our results indicate that α-synuclein behaves like a homopolymer at the extremes of solvent quality, while in the intermediate solvent regime, the uneven distribution of charged residues along the sequence strongly influences the conformations adopted by the chain. We refine the ensemble extracted from the REMD simulations of α-synuclein, which shows the best qualitative agreement with experiment, by fitting to the experimental NMR Residual Dipolar Couplings (RDCs) and Paramagnetic Relaxation Enhancements (PREs). Our results demonstrate that the detailed shape of the RDC patterns are sensitive to the angular correlations that are local in sequence while longer range anti-correlations which arise from packing constraints affect the RDC magnitudes.

Identifiers

PMID23162382
PMCPMC3496295

What OpenQuestion holds

Textmetadata
LicenceTDM
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.