Evidence map›Paper›PMID 18851978›Full record

ArticleJournal of molecular biology2008

The binding of thioflavin T and its neutral analog BTA-1 to protofibrils of the Alzheimer's disease Abeta(16-22) peptide probed by molecular dynamics simulations.

Chun Wu, Zhixiang Wang, Hongxing Lei, Yong Duan, Michael T Bowers, Joan-Emma Shea

Abstract read
In one paragraph

Article in Journal of molecular biology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing 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

41 citing papers in PubMed.

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  12. Detection of amyloid fibrils in Parkinson's disease using plasmonic chirality.Proceedings of the National Academy of Sciences of the United States of America · 2018
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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

6 authors.

Chun WuDepartment of Chemistry and Biochemistry, University of California, Santa Barbara, CA 93106, USA.
Zhixiang Wang
Hongxing Lei
Yong Duan
Michael T Bowers
Joan-Emma Shea

Funding

PROTEIN CHEMISTRY COREP01AG027818 · NIA · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI TEPLOW, DAVID B. · 2006 to 2010
$7.6M
NIA NIH HHS AG027818NIA NIH HHS P01 AG027818
6 · The paper itself

Abstract

Thioflavin T (ThT) is a fluorescent dye commonly used to stain amyloid plaques, but the binding sites of this dye onto fibrils are poorly characterized. We present molecular dynamics simulations of the binding of ThT and its neutral analog BTA-1 [2-(4'-methylaminophenyl)benzothiazole] to model protofibrils of the Alzheimer's disease Abeta(16-22) (amyloid beta) peptide. Our simulations reveal two binding modes located at the grooves of the beta-sheet surfaces and at the ends of the beta-sheet. These simulations provide new insight into recent experimental work and allow us to characterize the high-capacity, micromolar-affinity site seen in experiment as binding to the beta-sheet surface grooves and the low-capacity, nanomolar-affinity site seen as binding to the beta-sheet extremities of the fibril. The structure-activity relationship upon mutating charged ThT to neutral BTA-1 in terms of increased lipophilicity and binding affinity was studied, with calculated solvation free energies and binding energies found to be in qualitative agreement with the experimental measurements.

Indexed as

Amyloid beta-PeptidesBenzothiazolesBinding SitesComputer SimulationHumansLigandsMicroscopy, Atomic ForceModels, ChemicalMolecular ConformationProtein BindingProtein ConformationProtein Structure, SecondaryStructure-Activity RelationshipThermodynamicsThiazolesAmyloid beta-PeptidesBenzothiazolesLigandsThiazolesthioflavin T

Identifiers

PMID18851978
PMCPMC2712570

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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.