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Open data
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Basic information
| Entry | Database: PDB / ID: 8bfa | |||||||||
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| Title | Sarkosyl-extracted AppNL-G-F Abeta42 fibril structure | |||||||||
Components | Amyloid-beta precursor protein | |||||||||
Keywords | PROTEIN FIBRIL / Amyloid / fibril / helical / cross-beta / beta amyloid / ex vivo / arctic mutant / alzheimers disease | |||||||||
| Function / homology | Function and homology informationamyloid-beta complex / growth cone lamellipodium / cellular response to norepinephrine stimulus / collateral sprouting in absence of injury / growth cone filopodium / microglia development / hippocampal neuron apoptotic process / Formyl peptide receptors bind formyl peptides and many other ligands / regulation of Wnt signaling pathway / axo-dendritic transport ...amyloid-beta complex / growth cone lamellipodium / cellular response to norepinephrine stimulus / collateral sprouting in absence of injury / growth cone filopodium / microglia development / hippocampal neuron apoptotic process / Formyl peptide receptors bind formyl peptides and many other ligands / regulation of Wnt signaling pathway / axo-dendritic transport / axon midline choice point recognition / regulation of synapse structure or activity / astrocyte activation involved in immune response / NMDA selective glutamate receptor signaling pathway / regulation of spontaneous synaptic transmission / mating behavior / growth factor receptor binding / peptidase activator activity / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / positive regulation of amyloid fibril formation / Golgi-associated vesicle / PTB domain binding / astrocyte projection / Lysosome Vesicle Biogenesis / Deregulated CDK5 triggers multiple neurodegenerative pathways in Alzheimer's disease models / neuron remodeling / nuclear envelope lumen / dendrite development / regulation of multicellular organism growth / TRAF6 mediated NF-kB activation / positive regulation of protein metabolic process / signaling receptor activator activity / negative regulation of long-term synaptic potentiation / transition metal ion binding / Advanced glycosylation endproduct receptor signaling / The NLRP3 inflammasome / modulation of excitatory postsynaptic potential / main axon / intracellular copper ion homeostasis / ECM proteoglycans / response to insulin-like growth factor stimulus / positive regulation of T cell migration / regulation of presynapse assembly / Notch signaling pathway / neuronal dense core vesicle / swimming behavior / Purinergic signaling in leishmaniasis infection / positive regulation of mitotic cell cycle / adult locomotory behavior / cellular response to manganese ion / positive regulation of chemokine production / extracellular matrix organization / positive regulation of calcium-mediated signaling / axonogenesis / neuron projection maintenance / clathrin-coated pit / Mitochondrial protein degradation / ionotropic glutamate receptor signaling pathway / astrocyte activation / platelet alpha granule lumen / response to interleukin-1 / regulation of neuron apoptotic process / positive regulation of glycolytic process / cellular response to cAMP / cellular response to copper ion / endosome lumen / trans-Golgi network membrane / positive regulation of interleukin-1 beta production / learning / protein serine/threonine kinase binding / dendritic shaft / positive regulation of long-term synaptic potentiation / central nervous system development / Post-translational protein phosphorylation / serine-type endopeptidase inhibitor activity / regulation of long-term neuronal synaptic plasticity / locomotory behavior / microglial cell activation / cellular response to nerve growth factor stimulus / visual learning / positive regulation of non-canonical NF-kappaB signal transduction / TAK1-dependent IKK and NF-kappa-B activation / synapse organization / positive regulation of JNK cascade / recycling endosome / response to lead ion / positive regulation of interleukin-6 production / Golgi lumen / cognition / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / cellular response to amyloid-beta / neuron projection development / endocytosis / calcium ion transport / positive regulation of inflammatory response / positive regulation of tumor necrosis factor production / Platelet degranulation / heparin binding / regulation of translation / regulation of gene expression Similarity search - Function | |||||||||
| Biological species | ![]() | |||||||||
| Method | ELECTRON MICROSCOPY / helical reconstruction / cryo EM / Resolution: 3 Å | |||||||||
Authors | Wilkinson, M. / Leistner, C. / Burgess, A. / Goodfellow, S. / Deuchars, S. / Ranson, N.A. / Radford, S.E. / Frank, R.A.W. | |||||||||
| Funding support | United Kingdom, 2items
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Citation | Journal: Nat Commun / Year: 2023Title: The in-tissue molecular architecture of β-amyloid pathology in the mammalian brain. Authors: Conny Leistner / Martin Wilkinson / Ailidh Burgess / Megan Lovatt / Stanley Goodbody / Yong Xu / Susan Deuchars / Sheena E Radford / Neil A Ranson / René A W Frank / ![]() Abstract: Amyloid plaques composed of Aβ fibrils are a hallmark of Alzheimer's disease (AD). However, the molecular architecture of amyloid plaques in the context of fresh mammalian brain tissue is unknown. ...Amyloid plaques composed of Aβ fibrils are a hallmark of Alzheimer's disease (AD). However, the molecular architecture of amyloid plaques in the context of fresh mammalian brain tissue is unknown. Here, using cryogenic correlated light and electron tomography we report the in situ molecular architecture of Aβ fibrils in the App familial AD mouse model containing the Arctic mutation and an atomic model of ex vivo purified Arctic Aβ fibrils. We show that in-tissue Aβ fibrils are arranged in a lattice or parallel bundles, and are interdigitated by subcellular compartments, extracellular vesicles, extracellular droplets and extracellular multilamellar bodies. The Arctic Aβ fibril differs significantly from an earlier App fibril structure, indicating a striking effect of the Arctic mutation. These structural data also revealed an ensemble of additional fibrillar species, including thin protofilament-like rods and branched fibrils. Together, these results provide a structural model for the dense network architecture that characterises β-amyloid plaque pathology. | |||||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 8bfa.cif.gz | 70.3 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb8bfa.ent.gz | 53.6 KB | Display | PDB format |
| PDBx/mmJSON format | 8bfa.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/bf/8bfa ftp://data.pdbj.org/pub/pdb/validation_reports/bf/8bfa | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 16018MC ![]() 8bfbC M: map data used to model this data C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
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Assembly
| Deposited unit | ![]()
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Components
| #1: Protein/peptide | Mass: 4448.025 Da / Num. of mol.: 10 / Source method: isolated from a natural source Details: App^NL-G-F, humanised abeta42 with arctic mutation (E22G), processed form of APP cleaved in the brain Source: (natural) ![]() |
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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: Sarkosyl-extracted AppNL-G-F Abeta42 fibril / Type: COMPLEX / Details: Fibrils purified from mouse brain / Entity ID: all / Source: NATURAL | |||||||||||||||
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| Molecular weight | Value: 4.441 kDa/nm / Experimental value: YES | |||||||||||||||
| Source (natural) | Organism: ![]() | |||||||||||||||
| Buffer solution | pH: 7.4 | |||||||||||||||
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| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES Details: Sarkosyl-insoluble fibrils from App^NL-G-F mouse brain | |||||||||||||||
| Specimen support | Grid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: C-flat-1.2/1.3 | |||||||||||||||
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 90 % / Chamber temperature: 277 K / Details: 6s blot |
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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: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 96000 X / Nominal defocus max: 3100 nm / Nominal defocus min: 1600 nm / Cs: 2.7 mm / C2 aperture diameter: 50 µm / Alignment procedure: COMA FREE |
| Specimen holder | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
| Image recording | Average exposure time: 8 sec. / Electron dose: 52 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 2428 Details: 1925 raw EER frames were collected per image and combined into 40 fractions for processing |
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Processing
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||
| Helical symmerty | Angular rotation/subunit: 179.352 ° / Axial rise/subunit: 2.418 Å / Axial symmetry: C1 | ||||||||||||||||||||||||||||||||||||||||
| Particle selection | Num. of particles selected: 63680 Details: Manually picked a subset of images to train a model for automatic fibril segment picking in crYOLO | ||||||||||||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 2568 / Symmetry type: HELICAL | ||||||||||||||||||||||||||||||||||||||||
| Atomic model building | B value: 89 / Protocol: AB INITIO MODEL / Space: REAL / Target criteria: Correlation coefficient |
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United Kingdom, 2items
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FIELD EMISSION GUN