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Open data
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Basic information
| Entry | Database: PDB / ID: 8sel | ||||||
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| Title | Type IIIb beta-amyloid 40 Filaments from Down Syndrome | ||||||
Components | Amyloid-beta protein 40 | ||||||
Keywords | NEUROPEPTIDE / Beta Amyloid filaments / Down Syndrome / Human Trisomy 21 | ||||||
| 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 / Formyl peptide receptors bind formyl peptides and many other ligands / axo-dendritic transport / regulation of Wnt signaling pathway / axon midline choice point recognition ...amyloid-beta complex / growth cone lamellipodium / cellular response to norepinephrine stimulus / collateral sprouting in absence of injury / growth cone filopodium / microglia development / Formyl peptide receptors bind formyl peptides and many other ligands / axo-dendritic transport / regulation of Wnt signaling pathway / axon midline choice point recognition / regulation of synapse structure or activity / hippocampal neuron apoptotic process / 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 / PTB domain binding / positive regulation of amyloid fibril formation / Golgi-associated vesicle / astrocyte projection / Lysosome Vesicle Biogenesis / neuron remodeling / Deregulated CDK5 triggers multiple neurodegenerative pathways in Alzheimer's disease models / nuclear envelope lumen / dendrite development / TRAF6 mediated NF-kB activation / positive regulation of protein metabolic process / signaling receptor activator activity / negative regulation of long-term synaptic potentiation / Advanced glycosylation endproduct receptor signaling / transition metal ion binding / The NLRP3 inflammasome / main axon / intracellular copper ion homeostasis / modulation of excitatory postsynaptic potential / regulation of multicellular organism growth / ECM proteoglycans / response to insulin-like growth factor stimulus / regulation of presynapse assembly / positive regulation of T cell migration / neuronal dense core vesicle / Purinergic signaling in leishmaniasis infection / cellular response to manganese ion / positive regulation of chemokine production / Notch signaling pathway / swimming behavior / neuron projection maintenance / extracellular matrix organization / clathrin-coated pit / positive regulation of mitotic cell cycle / axonogenesis / Mitochondrial protein degradation / positive regulation of calcium-mediated signaling / ionotropic glutamate receptor signaling pathway / astrocyte activation / platelet alpha granule lumen / response to interleukin-1 / regulation of neuron apoptotic process / cellular response to copper ion / cellular response to cAMP / positive regulation of glycolytic process / endosome lumen / trans-Golgi network membrane / dendritic shaft / positive regulation of interleukin-1 beta production / protein serine/threonine kinase binding / positive regulation of long-term synaptic potentiation / learning / central nervous system development / adult locomotory behavior / Post-translational protein phosphorylation / serine-type endopeptidase inhibitor activity / locomotory behavior / microglial cell activation / cellular response to nerve growth factor stimulus / TAK1-dependent IKK and NF-kappa-B activation / positive regulation of non-canonical NF-kappaB signal transduction / synapse organization / visual learning / recycling endosome / regulation of long-term neuronal synaptic plasticity / Golgi lumen / positive regulation of interleukin-6 production / positive regulation of JNK cascade / 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 / endocytosis / neuron projection development / positive regulation of tumor necrosis factor production / positive regulation of inflammatory response / calcium ion transport / Platelet degranulation / regulation of translation / heparin binding / regulation of gene expression Similarity search - Function | ||||||
| Biological species | Homo sapiens (human) | ||||||
| Method | ELECTRON MICROSCOPY / helical reconstruction / cryo EM / Resolution: 3.8 Å | ||||||
Authors | Hoq, M.R. / Vago, F.S. / Bharath, S.R. / Jiang, W. | ||||||
| Funding support | United States, 1items
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Citation | Journal: Nat Struct Mol Biol / Year: 2024Title: Cryo-EM structures of amyloid-β and tau filaments in Down syndrome. Authors: Anllely Fernandez / Md Rejaul Hoq / Grace I Hallinan / Daoyi Li / Sakshibeedu R Bharath / Frank S Vago / Xiaoqi Zhang / Kadir A Ozcan / Kathy L Newell / Holly J Garringer / Wen Jiang / ...Authors: Anllely Fernandez / Md Rejaul Hoq / Grace I Hallinan / Daoyi Li / Sakshibeedu R Bharath / Frank S Vago / Xiaoqi Zhang / Kadir A Ozcan / Kathy L Newell / Holly J Garringer / Wen Jiang / Bernardino Ghetti / Ruben Vidal / ![]() Abstract: Adult individuals with Down syndrome (DS) develop Alzheimer disease (AD). Whether there is a difference between AD in DS and AD regarding the structure of amyloid-β (Aβ) and tau filaments is ...Adult individuals with Down syndrome (DS) develop Alzheimer disease (AD). Whether there is a difference between AD in DS and AD regarding the structure of amyloid-β (Aβ) and tau filaments is unknown. Here we report the structure of Aβ and tau filaments from two DS brains. We found two Aβ filaments (types IIIa and IIIb) that differ from those previously reported in sporadic AD and two types of Aβ filaments (I and II) identical to those found in sporadic and familial AD. Tau filaments (paired helical filaments and straight filaments) were identical to those in AD, supporting the notion of a common mechanism through which amyloids trigger aggregation of tau. This knowledge is important for understanding AD in DS and assessing whether adults with DS could be included in AD clinical trials. | ||||||
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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 | 8sel.cif.gz | 136 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb8sel.ent.gz | 110.9 KB | Display | PDB format |
| PDBx/mmJSON format | 8sel.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/se/8sel ftp://data.pdbj.org/pub/pdb/validation_reports/se/8sel | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 40421MC ![]() 8sehC ![]() 8seiC ![]() 8sejC ![]() 8sekC 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: 4335.852 Da / Num. of mol.: 20 / Source method: isolated from a natural source Details: Type IIIb beta-amyloid 40 Filaments from Human Trisomy 21 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 IIIb beta amyloid 40 from Human trisomy 21 Case 2. Type: TISSUE / Entity ID: all / Source: NATURAL |
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| Source (natural) | Organism: Homo sapiens (human) |
| 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: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER |
| Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 3000 nm / Nominal defocus min: 400 nm |
| Image recording | Electron dose: 52.35 e/Å2 / Detector mode: COUNTING / Film or detector model: DIRECT ELECTRON DE-12 (4k x 3k) |
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Processing
| EM software | Name: RELION / Version: 4 / Category: 3D reconstruction |
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
| Helical symmerty | Angular rotation/subunit: -0.46 ° / Axial rise/subunit: 4.76 Å / Axial symmetry: C2 |
| 3D reconstruction | Resolution: 3.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 4295 / Num. of class averages: 1 / Symmetry type: HELICAL |
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About Yorodumi




Homo sapiens (human)
United States, 1items
Citation








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FIELD EMISSION GUN