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Open data
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Basic information
Entry | Database: PDB / ID: 7zj2 | ||||||
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Title | Amyloid fibril (in vitro) from full-length hnRNPA1 protein | ||||||
![]() | Isoform A1-A of Heterogeneous nuclear ribonucleoprotein A1 | ||||||
![]() | NUCLEAR PROTEIN / Amyloidosis / Misfolding disease / Inflammation / Prion / Protein fibril | ||||||
Function / homology | ![]() cellular response to sodium arsenite / SARS-CoV-1-host interactions / import into nucleus / telomeric repeat-containing RNA binding / G-rich strand telomeric DNA binding / pre-mRNA binding / nuclear export / RNA export from nucleus / miRNA binding / FGFR2 alternative splicing ...cellular response to sodium arsenite / SARS-CoV-1-host interactions / import into nucleus / telomeric repeat-containing RNA binding / G-rich strand telomeric DNA binding / pre-mRNA binding / nuclear export / RNA export from nucleus / miRNA binding / FGFR2 alternative splicing / regulation of alternative mRNA splicing, via spliceosome / SARS-CoV-1 modulates host translation machinery / regulation of RNA splicing / negative regulation of telomere maintenance via telomerase / Processing of Capped Intron-Containing Pre-mRNA / mRNA transport / cellular response to glucose starvation / positive regulation of telomere maintenance via telomerase / catalytic step 2 spliceosome / mRNA Splicing - Major Pathway / mRNA 3'-UTR binding / spliceosomal complex / mRNA splicing, via spliceosome / single-stranded DNA binding / single-stranded RNA binding / ribonucleoprotein complex / protein domain specific binding / DNA binding / RNA binding / extracellular exosome / nucleoplasm / identical protein binding / membrane / nucleus / cytosol / cytoplasm Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ELECTRON MICROSCOPY / helical reconstruction / cryo EM / Resolution: 3.32 Å | ||||||
![]() | Sharma, K. / Banerjee, S. / Schmidt, M. / Faendrich, M. | ||||||
Funding support | 1items
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![]() | ![]() Title: Cryo-EM Structure of the Full-length hnRNPA1 Amyloid Fibril. Authors: Kartikay Sharma / Sambhasan Banerjee / Dilan Savran / Cedric Rajes / Sebastian Wiese / Amandeep Girdhar / Nadine Schwierz / Christopher Lee / James Shorter / Matthias Schmidt / Lin Guo / Marcus Fändrich / ![]() ![]() Abstract: Heterogeneous nuclear ribonucleoprotein A1 (hnRNPA1) is a multifunctional RNA-binding protein that is associated with neurodegenerative diseases, such as amyotrophic lateral sclerosis and multisystem ...Heterogeneous nuclear ribonucleoprotein A1 (hnRNPA1) is a multifunctional RNA-binding protein that is associated with neurodegenerative diseases, such as amyotrophic lateral sclerosis and multisystem proteinopathy. In this study, we have used cryo-electron microscopy to investigate the three-dimensional structure of amyloid fibrils from full-length hnRNPA1 protein. We find that the fibril core is formed by a 45-residue segment of the prion-like low-complexity domain of the protein, whereas the remaining parts of the protein (275 residues) form a fuzzy coat around the fibril core. The fibril consists of two fibril protein stacks that are arranged into a pseudo-2 screw symmetry. The ordered core harbors several of the positions that are known to be affected by disease-associated mutations, but does not encompass the most aggregation-prone segments of the protein. These data indicate that the structures of amyloid fibrils from full-length proteins may be more complex than anticipated by current theories on protein misfolding. | ||||||
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 127.1 KB | Display | ![]() |
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PDB format | ![]() | 79.9 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 14739MC M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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1 |
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Components
#1: Protein | Mass: 34246.227 Da / Num. of mol.: 12 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: HELICAL ARRAY / 3D reconstruction method: helical reconstruction |
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Sample preparation
Component | Name: Amyloid fibril (in vitro) from full-length hnRNPA1 protein Type: COMPLEX / Details: In vitro full-length hnRNPA1 amyloid fibril / Entity ID: all / Source: RECOMBINANT |
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Molecular weight | Experimental value: NO |
Source (natural) | Organism: ![]() |
Source (recombinant) | Organism: ![]() ![]() |
Buffer solution | pH: 7.4 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Grid material: COPPER / Grid mesh size: 400 divisions/in. / Grid type: C-flat-1.2/1.3 |
Vitrification | Instrument: FEI VITROBOT MARK III / Cryogen name: ETHANE / Humidity: 95 % |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 1000 nm / Cs: 2.7 mm |
Specimen holder | Cryogen: NITROGEN |
Image recording | Average exposure time: 10 sec. / Electron dose: 42.64 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of real images: 2624 |
Image scans | Movie frames/image: 40 |
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Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||
Helical symmerty | Angular rotation/subunit: 179.05 ° / Axial rise/subunit: 2.37 Å / Axial symmetry: C1 | ||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 184301 | ||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.32 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 54408 / Symmetry type: HELICAL | ||||||||||||||||||||||||||||||||
Atomic model building | Protocol: BACKBONE TRACE / Space: REAL / Target criteria: correlation coefficient | ||||||||||||||||||||||||||||||||
Atomic model building | PDB-ID: 7BX7 Accession code: 7BX7 / Source name: PDB / Type: experimental model |