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Yorodumi- PDB-8azs: Type I amyloid-beta 42 filaments from high-spin supernatants of a... -
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Basic information
| Entry | Database: PDB / ID: 8azs | ||||||||||||
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| Title | Type I amyloid-beta 42 filaments from high-spin supernatants of aqueous extracts from Alzheimer's disease brains | ABeta42 | ||||||||||||
Components | Amyloid-beta precursor protein | ||||||||||||
Keywords | PROTEIN FIBRIL / amyloid / filaments / Abeta42 / amyloid-beta / cryo-EM | ||||||||||||
| 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 / regulation of Wnt signaling pathway / Formyl peptide receptors bind formyl peptides and many other ligands / 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 / regulation of Wnt signaling pathway / Formyl peptide receptors bind formyl peptides and many other ligands / axo-dendritic transport / axon midline choice point recognition / regulation of synapse structure or activity / positive regulation of synaptic transmission, cholinergic / astrocyte activation involved in immune response / NMDA selective glutamate receptor signaling pathway / regulation of spontaneous synaptic transmission / mating behavior / growth factor receptor binding / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / positive regulation of amyloid fibril formation / peptidase activator activity / PTB domain binding / Golgi-associated vesicle / Lysosome Vesicle Biogenesis / Deregulated CDK5 triggers multiple neurodegenerative pathways in Alzheimer's disease models / neuron remodeling / astrocyte projection / regulation of multicellular organism growth / nuclear envelope lumen / dendrite development / TRAF6 mediated NF-kB activation / positive regulation of protein metabolic process / negative regulation of long-term synaptic potentiation / signaling receptor activator activity / Notch signaling pathway / transition metal ion binding / Advanced glycosylation endproduct receptor signaling / The NLRP3 inflammasome / intracellular copper ion homeostasis / modulation of excitatory postsynaptic potential / main axon / ECM proteoglycans / positive regulation of T cell migration / response to insulin-like growth factor stimulus / regulation of presynapse assembly / extracellular matrix organization / swimming behavior / adult locomotory behavior / neuronal dense core vesicle / regulation of long-term neuronal synaptic plasticity / Purinergic signaling in leishmaniasis infection / positive regulation of calcium-mediated signaling / positive regulation of chemokine production / positive regulation of mitotic cell cycle / axonogenesis / cellular response to manganese ion / neuron projection maintenance / clathrin-coated pit / visual learning / cellular response to cAMP / astrocyte activation / synaptic cleft / Mitochondrial protein degradation / response to interleukin-1 / platelet alpha granule lumen / regulation of neuron apoptotic process / positive regulation of glycolytic process / learning / ionotropic glutamate receptor signaling pathway / locomotory behavior / cellular response to copper ion / endosome lumen / positive regulation of interleukin-1 beta production / central nervous system development / positive regulation of long-term synaptic potentiation / protein serine/threonine kinase binding / serine-type endopeptidase inhibitor activity / Post-translational protein phosphorylation / dendritic shaft / trans-Golgi network membrane / endocytosis / microglial cell activation / cellular response to nerve growth factor stimulus / regulation of translation / positive regulation of non-canonical NF-kappaB signal transduction / positive regulation of interleukin-6 production / positive regulation of JNK cascade / synapse organization / TAK1-dependent IKK and NF-kappa-B activation / Golgi lumen / recycling endosome / response to lead ion / 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 / calcium ion transport / positive regulation of inflammatory response / regulation of gene expression / positive regulation of tumor necrosis factor production Similarity search - Function | ||||||||||||
| Biological species | Homo sapiens (human) | ||||||||||||
| Method | ELECTRON MICROSCOPY / helical reconstruction / cryo EM / Resolution: 2.9 Å | ||||||||||||
Authors | Yang, Y. / Stern, M.A. / Meunier, L.A. / Liu, W. / Cai, Y.Q. / Ericsson, M. / Liu, L. / Selkoe, J.D. / Goedert, M. / Scheres, H.W.S. | ||||||||||||
| Funding support | United Kingdom, 3items
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Citation | Journal: Neuron / Year: 2023Title: Abundant Aβ fibrils in ultracentrifugal supernatants of aqueous extracts from Alzheimer's disease brains. Authors: Andrew M Stern / Yang Yang / Shanxue Jin / Keitaro Yamashita / Angela L Meunier / Wen Liu / Yuqi Cai / Maria Ericsson / Lei Liu / Michel Goedert / Sjors H W Scheres / Dennis J Selkoe / ![]() Abstract: Soluble oligomers of amyloid β-protein (Aβ) have been defined as aggregates in supernatants following ultracentrifugation of aqueous extracts from Alzheimer's disease (AD) brains and are believed ...Soluble oligomers of amyloid β-protein (Aβ) have been defined as aggregates in supernatants following ultracentrifugation of aqueous extracts from Alzheimer's disease (AD) brains and are believed to be upstream initiators of synaptic dysfunction, but little is known about their structures. We now report the unexpected presence of Aβ fibrils in synaptotoxic high-speed supernatants from AD brains extracted by soaking in an aqueous buffer. The fibrils did not appear to form during preparation, and their counts by EM correlated with Aβ ELISA quantification. Cryo-EM structures of aqueous Aβ fibrils were identical to those from sarkosyl-insoluble homogenates. The fibrils in aqueous extracts were labeled by lecanemab, an Aβ aggregate-directed antibody reported to improve AD cognitive outcomes. Lecanemab provided protection against aqueous fibril synaptotoxicity. We conclude that fibrils are abundant in aqueous extracts from AD brains and have the same structures as those from plaques. These findings have implications for AD pathogenesis and drug design. | ||||||||||||
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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 | 8azs.cif.gz | 19.5 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb8azs.ent.gz | 8.3 KB | Display | PDB format |
| PDBx/mmJSON format | 8azs.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/az/8azs ftp://data.pdbj.org/pub/pdb/validation_reports/az/8azs | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 15770MC ![]() 8aztC ![]() 8azuC 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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| 1 | x 6![]()
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| Noncrystallographic symmetry (NCS) | NCS oper:
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Components
| #1: Protein/peptide | Mass: 4520.087 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P05067 |
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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: Type I amyloid-beta 42 filaments in soluble high-molecular weight aggregate fractions extracted from Alzheimer's disease brain Type: TISSUE / Entity ID: all / Source: NATURAL |
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| Source (natural) | Organism: Homo sapiens (human) |
| Buffer solution | pH: 7.5 |
| 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: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2400 nm / Nominal defocus min: 1000 nm |
| Image recording | Electron dose: 40 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
| Software | Name: REFMAC / Version: 5.8.0350 / Classification: refinement / Contact author: Garib N. Murshudov / Contact author email: garib[at]mrc-lmb.cam.ac.uk / Date: May 11, 2022 Description: (un)restrained refinement or idealisation of macromolecular structures | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Helical symmerty | Angular rotation/subunit: 178.4 ° / Axial rise/subunit: 2.4 Å / Axial symmetry: C1 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 2.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 37380 / Symmetry type: HELICAL | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Atomic model building | PDB-ID: 7Q4B Accession code: 7Q4B / Source name: PDB / Type: experimental model | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Refinement | Resolution: 2.9→81.438 Å / Cor.coef. Fo:Fc: 0.879 / WRfactor Rwork: 0.327 / SU B: 6.973 / SU ML: 0.13 / Average fsc free: 0 / Average fsc overall: 0.8793 / Average fsc work: 0.8793 / ESU R: 0.103 Details: Hydrogens have been added in their riding positions
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| Solvent computation | Solvent model: NONE | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Displacement parameters | Biso mean: 68.479 Å2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Refine LS restraints |
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About Yorodumi



Homo sapiens (human)
United Kingdom, 3items
Citation





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