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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 information regulation of epidermal growth factor-activated receptor activity / signaling receptor activator activity / collateral sprouting in absence of injury / cytosolic mRNA polyadenylation / microglia development / regulation of synapse structure or activity / Formyl peptide receptors bind formyl peptides and many other ligands / regulation of Wnt signaling pathway / axo-dendritic transport / synaptic assembly at neuromuscular junction ...regulation of epidermal growth factor-activated receptor activity / signaling receptor activator activity / collateral sprouting in absence of injury / cytosolic mRNA polyadenylation / microglia development / regulation of synapse structure or activity / Formyl peptide receptors bind formyl peptides and many other ligands / regulation of Wnt signaling pathway / axo-dendritic transport / synaptic assembly at neuromuscular junction / smooth endoplasmic reticulum calcium ion homeostasis / axon midline choice point recognition / astrocyte activation involved in immune response / regulation of spontaneous synaptic transmission / mating behavior / NMDA selective glutamate receptor signaling pathway / ciliary rootlet / Lysosome Vesicle Biogenesis / PTB domain binding / Golgi-associated vesicle / positive regulation of amyloid fibril formation / neuron remodeling / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / protein serine/threonine kinase binding / Deregulated CDK5 triggers multiple neurodegenerative pathways in Alzheimer's disease models / : / nuclear envelope lumen / suckling behavior / presynaptic active zone / dendrite development / COPII-coated ER to Golgi transport vesicle / modulation of excitatory postsynaptic potential / TRAF6 mediated NF-kB activation / Advanced glycosylation endproduct receptor signaling / neuromuscular process controlling balance / The NLRP3 inflammasome / regulation of presynapse assembly / transition metal ion binding / Mitochondrial protein degradation / intracellular copper ion homeostasis / regulation of multicellular organism growth / negative regulation of long-term synaptic potentiation / negative regulation of neuron differentiation / ECM proteoglycans / smooth endoplasmic reticulum / positive regulation of T cell migration / spindle midzone / Purinergic signaling in leishmaniasis infection / positive regulation of calcium-mediated signaling / forebrain development / clathrin-coated pit / regulation of peptidyl-tyrosine phosphorylation / positive regulation of chemokine production / Notch signaling pathway / positive regulation of G2/M transition of mitotic cell cycle / positive regulation of protein metabolic process / ionotropic glutamate receptor signaling pathway / neuron projection maintenance / cholesterol metabolic process / response to interleukin-1 / positive regulation of glycolytic process / positive regulation of mitotic cell cycle / extracellular matrix organization / axonogenesis / adult locomotory behavior / trans-Golgi network membrane / dendritic shaft / platelet alpha granule lumen / locomotory behavior / positive regulation of peptidyl-threonine phosphorylation / learning / positive regulation of interleukin-1 beta production / central nervous system development / positive regulation of long-term synaptic potentiation / endosome lumen / astrocyte activation / Post-translational protein phosphorylation / positive regulation of JNK cascade / synapse organization / regulation of long-term neuronal synaptic plasticity / microglial cell activation / TAK1-dependent IKK and NF-kappa-B activation / visual learning / serine-type endopeptidase inhibitor activity / neuromuscular junction / recycling endosome / cognition / positive regulation of inflammatory response / Golgi lumen / neuron cellular homeostasis / endocytosis / positive regulation of non-canonical NF-kappaB signal transduction / cellular response to amyloid-beta / positive regulation of interleukin-6 production / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / neuron projection development / G2/M transition of mitotic cell cycle / positive regulation of tumor necrosis factor production / cell-cell junction / synaptic vesicle 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: 2023 Title: 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. | ||||||||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 8azs.cif.gz | 16 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 (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
-Assembly
Deposited unit |
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1 |
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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 |
-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 |
-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 FIELDBright-field microscopy / 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) |
-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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EM software |
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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 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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