Evidence map›Paper›PMID 32541895›Full record

ArticleNature structural & molecular biology2020

Cryo-EM structure of islet amyloid polypeptide fibrils reveals similarities with amyloid-β fibrils.

Christine Röder, Tatsiana Kupreichyk, Lothar Gremer, Luisa U Schäfer, Karunakar R Pothula, Raimond B G Ravelli, Dieter Willbold, Wolfgang Hoyer, Gunnar F Schröder

Open access · bronzeAbstract read
PubMed Publisher
In one paragraph

Article in Nature structural & molecular biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 97 papers.

0numbers the graph read from it
0cells of the map it votes in
97citing papers in PubMed
13.2field-weighted citation impact, top 1% 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

97 citing papers in PubMed, 171 citations in OpenAlex.

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  10. Mammals that can develop type 2 diabetes have a similarly structured β-sheet amyloid oligomer.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  11. A structural model of toxic amyloid oligomers involved in type 2 diabetes.Proceedings of the National Academy of Sciences of the United States of America · 2026
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  18. The Structure of Human IAPP Fibrils Reflects Membrane and pH Conditions.Journal of the American Chemical Society · 2025
    Article
  19. Article
  20. Article

37 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

9 authors at 2 institutions in 2 countries.

Christine Röder *Institute of Biological Information Processing (IBI-7: Structural Biochemistry), Forschungszentrum Jülich, Jülich, Germany.ORCID http://orcid.org/0000-0003-2600-8636
Tatsiana Kupreichyk *Institute of Biological Information Processing (IBI-7: Structural Biochemistry), Forschungszentrum Jülich, Jülich, Germany.ORCID http://orcid.org/0000-0002-5151-6424
Lothar GremerInstitute of Biological Information Processing (IBI-7: Structural Biochemistry), Forschungszentrum Jülich, Jülich, Germany.ORCID http://orcid.org/0000-0001-7065-5027
Luisa U SchäferInstitute of Biological Information Processing (IBI-7: Structural Biochemistry), Forschungszentrum Jülich, Jülich, Germany.ORCID http://orcid.org/0000-0002-8481-6298
Karunakar R PothulaInstitute of Biological Information Processing (IBI-7: Structural Biochemistry), Forschungszentrum Jülich, Jülich, Germany.ORCID http://orcid.org/0000-0003-0073-2511
Raimond B G RavelliThe Multimodal Molecular Imaging Institute, Maastricht University, Maastricht, the Netherlands.ORCID http://orcid.org/0000-0001-6056-5888
Dieter WillboldInstitute of Biological Information Processing (IBI-7: Structural Biochemistry), Forschungszentrum Jülich, Jülich, Germany.ORCID http://orcid.org/0000-0002-0065-7366
Wolfgang HoyerInstitute of Biological Information Processing (IBI-7: Structural Biochemistry), Forschungszentrum Jülich, Jülich, Germany. wolfgang.hoyer@uni-duesseldorf.de.ORCID http://orcid.org/0000-0003-4301-5416
Gunnar F SchröderInstitute of Biological Information Processing (IBI-7: Structural Biochemistry), Forschungszentrum Jülich, Jülich, Germany. gu.schroeder@fz-juelich.de.ORCID http://orcid.org/0000-0003-1803-5431
Forschungszentrum Jülich · DEMaastricht University · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Amyloid deposits consisting of fibrillar islet amyloid polypeptide (IAPP) in pancreatic islets are associated with beta-cell loss and have been implicated in type 2 diabetes (T2D). Here, we applied cryo-EM to reconstruct densities of three dominant IAPP fibril polymorphs, formed in vitro from synthetic human IAPP. An atomic model of the main polymorph, built from a density map of 4.2-Å resolution, reveals two S-shaped, intertwined protofilaments. The segment 21-NNFGAIL-27, essential for IAPP amyloidogenicity, forms the protofilament interface together with Tyr37 and the amidated C terminus. The S-fold resembles polymorphs of Alzheimer's disease (AD)-associated amyloid-β (Aβ) fibrils, which might account for the epidemiological link between T2D and AD and reports on IAPP-Aβ cross-seeding in vivo. The results structurally link the early-onset T2D IAPP genetic polymorphism (encoding Ser20Gly) with the AD Arctic mutation (Glu22Gly) of Aβ and support the design of inhibitors and imaging probes for IAPP fibrils.

Indexed as

Alzheimer DiseaseAmino Acid SubstitutionAmyloid beta-PeptidesCryoelectron MicroscopyDiabetes Mellitus, Type 2HumansHydrogen-Ion ConcentrationIslet Amyloid PolypeptideModels, MolecularMolecular Dynamics SimulationProtein ConformationAmyloid beta-PeptidesIslet Amyloid Polypeptide

Identifiers

PMID32541895
OpenAlexW3034727008

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.