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Open data
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Basic information
Entry | Database: PDB / ID: 8ec7 | |||||||||
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Title | HnRNPA2 D290V LCD PM3 | |||||||||
![]() | Heterogeneous nuclear ribonucleoproteins A2/B1 | |||||||||
![]() | PROTEIN FIBRIL / Amyloid | |||||||||
Function / homology | ![]() : / miRNA transport / positive regulation of telomere maintenance via telomere lengthening / RNA transport / G-quadruplex DNA unwinding / primary miRNA processing / single-stranded telomeric DNA binding / N6-methyladenosine-containing RNA reader activity / G-rich strand telomeric DNA binding / miRNA binding ...: / miRNA transport / positive regulation of telomere maintenance via telomere lengthening / RNA transport / G-quadruplex DNA unwinding / primary miRNA processing / single-stranded telomeric DNA binding / N6-methyladenosine-containing RNA reader activity / G-rich strand telomeric DNA binding / miRNA binding / negative regulation of mRNA splicing, via spliceosome / Processing of Capped Intron-Containing Pre-mRNA / mRNA transport / mRNA export from nucleus / Cajal body / pre-mRNA intronic binding / Gene and protein expression by JAK-STAT signaling after Interleukin-12 stimulation / catalytic step 2 spliceosome / mRNA Splicing - Major Pathway / molecular condensate scaffold activity / mRNA 3'-UTR binding / spliceosomal complex / nuclear matrix / mRNA splicing, via spliceosome / mRNA processing / chromosome, telomeric region / ribonucleoprotein complex / negative regulation of transcription by RNA polymerase II / RNA binding / extracellular exosome / nucleoplasm / identical protein binding / membrane / nucleus / cytoplasm Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | ELECTRON MICROSCOPY / helical reconstruction / cryo EM / Resolution: 3.9 Å | |||||||||
![]() | Eisenberg, D.S. / Lu, J. / Ge, P. / Boyer, D.R. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Cryo-EM structures of the D290V mutant of the hnRNPA2 low-complexity domain suggests how D290V affects phase separation and aggregation. Authors: Jiahui Lu / Peng Ge / Michael R Sawaya / Michael P Hughes / David R Boyer / Qin Cao / Romany Abskharon / Duilio Cascio / Einav Tayeb-Fligelman / David S Eisenberg / ![]() ![]() Abstract: Heterogeneous nuclear ribonucleoprotein A2 (hnRNPA2) is a human ribonucleoprotein that transports RNA to designated locations for translation via its ability to phase separate. Its mutated form, ...Heterogeneous nuclear ribonucleoprotein A2 (hnRNPA2) is a human ribonucleoprotein that transports RNA to designated locations for translation via its ability to phase separate. Its mutated form, D290V, is implicated in multisystem proteinopathy known to afflict two families, mainly with myopathy and Paget's disease of bone. Here, we investigate this mutant form of hnRNPA2 by determining cryo-EM structures of the recombinant D290V low complexity domain. We find that the mutant form of hnRNPA2 differs from the WT fibrils in four ways. In contrast to the WT fibrils, the PY-nuclear localization signals in the fibril cores of all three mutant polymorphs are less accessible to chaperones. Also, the mutant fibrils are more stable than WT fibrils as judged by phase separation, thermal stability, and energetic calculations. Similar to other pathogenic amyloids, the mutant fibrils are polymorphic. Thus, these structures offer evidence to explain how a D-to-V missense mutation diverts the assembly of reversible, functional amyloid-like fibrils into the assembly of pathogenic amyloid, and may shed light on analogous conversions occurring in other ribonucleoproteins that lead to neurological diseases such as amyotrophic lateral sclerosis and frontotemporal dementia. | |||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 152.8 KB | Display | ![]() |
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PDB format | ![]() | 111.4 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 28014MC ![]() 8du2C ![]() 8duwC 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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Symmetry | Helical symmetry: (Circular symmetry: 1 / Dyad axis: no / N subunits divisor: 1 / Num. of operations: 15 / Rise per n subunits: 4.88 Å / Rotation per n subunits: -0.72 °) |
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Components
#1: Protein | Mass: 15391.775 Da / Num. of mol.: 15 / Fragment: LCD (UNP residues 193-353) 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: FILAMENT / 3D reconstruction method: helical reconstruction |
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Sample preparation
Component | Name: Fibrils of hnRNPA2 D290V LCD PM3 / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT |
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Source (natural) | Organism: ![]() |
Source (recombinant) | Organism: ![]() ![]() |
Buffer solution | pH: 7.4 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
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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: 5000 nm / Nominal defocus min: 500 nm |
Image recording | Electron dose: 36 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
CTF correction | Type: PHASE FLIPPING ONLY | ||||||||||||||||||||||||
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Helical symmerty | Angular rotation/subunit: -0.72 ° / Axial rise/subunit: 4.88 Å / Axial symmetry: C1 | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 16114 / Symmetry type: HELICAL | ||||||||||||||||||||||||
Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
Displacement parameters | Biso mean: 99.89 Å2 | ||||||||||||||||||||||||
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