Evidence map›Paper›PMID 21961594›Full record

ArticleBiophysical journal2011

Binding of the molecular chaperone αB-crystallin to Aβ amyloid fibrils inhibits fibril elongation.

Sarah L Shammas, Christopher A Waudby, Shuyu Wang, Alexander K Buell, Tuomas P J Knowles, Heath Ecroyd, Mark E Welland, John A Carver, Christopher M Dobson, Sarah Meehan

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 88 papers.

0numbers the graph read from it
0cells of the map it votes in
88citing papers in PubMed
6.0field-weighted citation impact, top 3% 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

88 citing papers in PubMed, 155 citations in OpenAlex.

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28 more citing papers are in PubMed but not listed here.

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

10 authors at 5 institutions in 3 countries.

Sarah L ShammasDepartment of Chemistry, University of Cambridge, Cambridge, United Kingdom. sls42@cam.ac.uk
Christopher A Waudby
Shuyu Wang
Alexander K Buell
Tuomas P J Knowles
Heath Ecroyd
Mark E Welland
John A Carver
Christopher M Dobson
Sarah Meehan
University of Cambridge · GBBridge University · SSThe University of Adelaide · AUUniversity College London · GBUniversity of Wollongong · AU

Funding

Biotechnology and Biological Sciences Research CouncilMedical Research Council MC_G1000734Wellcome Trust 089703
6 · The paper itself

Abstract

The molecular chaperone αB-crystallin is a small heat-shock protein that is upregulated in response to a multitude of stress stimuli, and is found colocalized with Aβ amyloid fibrils in the extracellular plaques that are characteristic of Alzheimer's disease. We investigated whether this archetypical small heat-shock protein has the ability to interact with Aβ fibrils in vitro. We find that αB-crystallin binds to wild-type Aβ(42) fibrils with micromolar affinity, and also binds to fibrils formed from the E22G Arctic mutation of Aβ(42). Immunoelectron microscopy confirms that binding occurs along the entire length and ends of the fibrils. Investigations into the effect of αB-crystallin on the seeded growth of Aβ fibrils, both in solution and on the surface of a quartz crystal microbalance biosensor, reveal that the binding of αB-crystallin to seed fibrils strongly inhibits their elongation. Because the lag phase in sigmoidal fibril assembly kinetics is dominated by elongation and fragmentation rates, the chaperone mechanism identified here represents a highly effective means to inhibit fibril proliferation. Together with previous observations of αB-crystallin interaction with α-synuclein and insulin fibrils, the results suggest that this mechanism is a generic means of providing molecular chaperone protection against amyloid fibril formation.

Indexed as

Protein Multimerizationalpha-Crystallin B ChainAmyloid beta-PeptidesMolecular ImagingPeptide FragmentsProtein BindingProtein Structure, Secondaryalpha-Crystallin B ChainAmyloid beta-Peptidesamyloid beta-protein (1-42)Peptide Fragments

Identifiers

PMID21961594
PMCPMC3183811
OpenAlexW1983267406

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.