Evidence map›Paper›PMID 31792453›Full record

ArticleNature structural & molecular biology2019

The structure and oxidation of the eye lens chaperone αA-crystallin.

Christoph J O Kaiser, Carsten Peters, Philipp W N Schmid, Maria Stavropoulou, Juan Zou, Vinay Dahiya, Evgeny V Mymrikov, Beate Rockel, Sam Asami, Martin Haslbeck and 5 more

Open access · bronzeAbstract read
In one paragraph

Article in Nature structural & molecular biology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
2.5field-weighted citation impact, top 10% 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

45 citing papers in PubMed, 70 citations in OpenAlex.

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  11. Activation mechanism of small heat shock protein HSPB5 revealed by disease-associated mutants.Proceedings of the National Academy of Sciences of the United States of America · 2025
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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

15 authors at 3 institutions in 2 countries.

Christoph J O Kaiser *Center for Integrated Protein Science Munich at the Department Chemie, Technische Universität München, Garching, Germany.ORCID http://orcid.org/0000-0002-8481-6845
Carsten Peters *Center for Integrated Protein Science Munich at the Department Chemie, Technische Universität München, Garching, Germany.ORCID http://orcid.org/0000-0002-7193-499X
Philipp W N SchmidCenter for Integrated Protein Science Munich at the Department Chemie, Technische Universität München, Garching, Germany.
Maria StavropoulouCenter for Integrated Protein Science Munich at the Department Chemie, Technische Universität München, Garching, Germany.
Juan ZouWellcome Centre for Cell Biology, University of Edinburgh, Edinburgh, UK.
Vinay DahiyaCenter for Integrated Protein Science Munich at the Department Chemie, Technische Universität München, Garching, Germany.
Evgeny V MymrikovCenter for Integrated Protein Science Munich at the Department Chemie, Technische Universität München, Garching, Germany.ORCID http://orcid.org/0000-0003-4817-6278
Beate RockelCenter for Integrated Protein Science Munich at the Department Chemie, Technische Universität München, Garching, Germany.
Sam AsamiCenter for Integrated Protein Science Munich at the Department Chemie, Technische Universität München, Garching, Germany.ORCID http://orcid.org/0000-0002-5013-5806
Martin HaslbeckCenter for Integrated Protein Science Munich at the Department Chemie, Technische Universität München, Garching, Germany.
Juri RappsilberWellcome Centre for Cell Biology, University of Edinburgh, Edinburgh, UK.ORCID http://orcid.org/0000-0001-5999-1310
Bernd ReifCenter for Integrated Protein Science Munich at the Department Chemie, Technische Universität München, Garching, Germany.ORCID http://orcid.org/0000-0001-7368-7198
Martin ZachariasCenter for Integrated Protein Science Munich at the Physics Department, Technische Universität München, Garching, Germany.
Johannes BuchnerCenter for Integrated Protein Science Munich at the Department Chemie, Technische Universität München, Garching, Germany. johannes.buchner@tum.de.ORCID http://orcid.org/0000-0003-1282-7737
Sevil WeinkaufCenter for Integrated Protein Science Munich at the Department Chemie, Technische Universität München, Garching, Germany. sevil.weinkauf@tum.de.ORCID http://orcid.org/0000-0002-7403-5017
Center for Integrated Protein Science Munich · DEWellcome Centre for Cell Biology · GBUniversity of Freiburg · DE

Funding

Wellcome Trust 103139Wellcome Trust 103139/Z/13/ZWellcome Trust 203149
6 · The paper itself

Abstract

The small heat shock protein αA-crystallin is a molecular chaperone important for the optical properties of the vertebrate eye lens. It forms heterogeneous oligomeric ensembles. We determined the structures of human αA-crystallin oligomers by combining cryo-electron microscopy, cross-linking/mass spectrometry, NMR spectroscopy and molecular modeling. The different oligomers can be interconverted by the addition or subtraction of tetramers, leading to mainly 12-, 16- and 20-meric assemblies in which interactions between N-terminal regions are important. Cross-dimer domain-swapping of the C-terminal region is a determinant of αA-crystallin heterogeneity. Human αA-crystallin contains two cysteines, which can form an intramolecular disulfide in vivo. Oxidation in vitro requires conformational changes and oligomer dissociation. The oxidized oligomers, which are larger than reduced αA-crystallin and destabilized against unfolding, are active chaperones and can transfer the disulfide to destabilized substrate proteins. The insight into the structure and function of αA-crystallin provides a basis for understanding its role in the eye lens.

Indexed as

alpha-Crystallin A ChainCryoelectron MicroscopyHumansLens, CrystallineModels, MolecularOxidation-ReductionProtein ConformationProtein MultimerizationProtein Unfoldingalpha-Crystallin A Chain

Identifiers

PMID31792453
PMCPMC7115824
OpenAlexW2990488105

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.