Evidence map›Paper›PMID 36646699›Full record

ArticleNature communications2023

Cryo-EM structure of hnRNPDL-2 fibrils, a functional amyloid associated with limb-girdle muscular dystrophy D3.

Javier Garcia-Pardo, Andrea Bartolomé-Nafría, Antonio Chaves-Sanjuan, Marcos Gil-Garcia, Cristina Visentin, Martino Bolognesi, Stefano Ricagno, Salvador Ventura

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
4.8field-weighted citation impact, top 5% 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

21 citing papers in PubMed, 32 citations in OpenAlex.

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  12. Structure of biofilm-forming functional amyloid PSMα1 fromProceedings of the National Academy of Sciences of the United States of America · 2024
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  14. Mechanisms and pathology of protein misfolding and aggregation.Nature reviews. Molecular cell biology · 2023
    Review
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  17. Chaotic aging: intrinsically disordered proteins in aging-related processes.Cellular and molecular life sciences : CMLS · 2023
    Article
  18. Article
  19. Article
  20. 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

8 authors at 2 institutions in 2 countries.

Javier Garcia-PardoInstitut de Biotecnologia i de Biomedicina (IBB) and Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain.ORCID 0000-0001-9179-6371
Andrea Bartolomé-NafríaInstitut de Biotecnologia i de Biomedicina (IBB) and Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain.ORCID 0000-0003-3114-1415
Antonio Chaves-SanjuanDipartimento di Bioscienze, Università degli Studi di Milano, 20133, Milano, Italy.ORCID 0000-0003-3287-9024
Marcos Gil-GarciaInstitut de Biotecnologia i de Biomedicina (IBB) and Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain.ORCID 0000-0002-7457-7860
Cristina VisentinDipartimento di Bioscienze, Università degli Studi di Milano, 20133, Milano, Italy.
Martino BolognesiDipartimento di Bioscienze, Università degli Studi di Milano, 20133, Milano, Italy.ORCID 0000-0002-9253-5170
Stefano RicagnoDipartimento di Bioscienze, Università degli Studi di Milano, 20133, Milano, Italy.ORCID 0000-0001-6678-5873
Salvador VenturaInstitut de Biotecnologia i de Biomedicina (IBB) and Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain. Salvador.Ventura@uab.cat.ORCID 0000-0002-9652-6351
Universitat Autònoma de Barcelona · ESUniversity of Milan · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

hnRNPDL is a ribonucleoprotein (RNP) involved in transcription and RNA-processing that hosts missense mutations causing limb-girdle muscular dystrophy D3 (LGMD D3). Mammalian-specific alternative splicing (AS) renders three natural isoforms, hnRNPDL-2 being predominant in humans. We present the cryo-electron microscopy structure of full-length hnRNPDL-2 amyloid fibrils, which are stable, non-toxic, and bind nucleic acids. The high-resolution amyloid core consists of a single Gly/Tyr-rich and highly hydrophilic filament containing internal water channels. The RNA binding domains are located as a solenoidal coat around the core. The architecture and activity of hnRNPDL-2 fibrils are reminiscent of functional amyloids, our results suggesting that LGMD D3 might be a loss-of-function disease associated with impaired fibrillation. Strikingly, the fibril core matches exon 6, absent in the soluble hnRNPDL-3 isoform. This provides structural evidence for AS controlling hnRNPDL assembly by precisely including/skipping an amyloid exon, a mechanism that holds the potential to generate functional diversity in RNPs.

Indexed as

AmyloidMuscular Dystrophies, Limb-GirdleRibonucleoproteinsAlternative SplicingAmyloidogenic ProteinsCryoelectron MicroscopyHumansProtein IsoformsAmyloidAmyloidogenic ProteinsHNRPDL protein, humanProtein IsoformsRibonucleoproteins

Identifiers

PMID36646699
PMCPMC9842712
OpenAlexW4316500170

What OpenQuestion holds

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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.