+Open data
-Basic information
Entry | Database: PDB / ID: 8sek | ||||||
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Title | Type IIIa beta-amyloid 40 Filaments from Down syndrome | ||||||
Components | Type IIIb beta-amyloid 40 Filament | ||||||
Keywords | NEUROPEPTIDE / Beta Amyloid filaments / Down Syndrome / Human Trisomy 21 | ||||||
Function / homology | Function and homology information cytosolic mRNA polyadenylation / collateral sprouting in absence of injury / microglia development / regulation of Wnt signaling pathway / regulation of synapse structure or activity / Formyl peptide receptors bind formyl peptides and many other ligands / axo-dendritic transport / synaptic assembly at neuromuscular junction / signaling receptor activator activity / axon midline choice point recognition ...cytosolic mRNA polyadenylation / collateral sprouting in absence of injury / microglia development / regulation of Wnt signaling pathway / regulation of synapse structure or activity / Formyl peptide receptors bind formyl peptides and many other ligands / axo-dendritic transport / synaptic assembly at neuromuscular junction / signaling receptor activator activity / axon midline choice point recognition / smooth endoplasmic reticulum calcium ion homeostasis / 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 / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / positive regulation of amyloid fibril formation / neuron remodeling / Deregulated CDK5 triggers multiple neurodegenerative pathways in Alzheimer's disease models / nuclear envelope lumen / suckling behavior / COPII-coated ER to Golgi transport vesicle / dendrite development / presynaptic active zone / modulation of excitatory postsynaptic potential / TRAF6 mediated NF-kB activation / Advanced glycosylation endproduct receptor signaling / neuromuscular process controlling balance / The NLRP3 inflammasome / negative regulation of long-term synaptic potentiation / regulation of presynapse assembly / transition metal ion binding / regulation of multicellular organism growth / negative regulation of neuron differentiation / intracellular copper ion homeostasis / ECM proteoglycans / spindle midzone / positive regulation of T cell migration / smooth endoplasmic reticulum / Purinergic signaling in leishmaniasis infection / protein serine/threonine kinase binding / regulation of peptidyl-tyrosine phosphorylation / clathrin-coated pit / positive regulation of chemokine production / forebrain development / Notch signaling pathway / neuron projection maintenance / positive regulation of G2/M transition of mitotic cell cycle / Mitochondrial protein degradation / positive regulation of protein metabolic process / positive regulation of calcium-mediated signaling / ionotropic glutamate receptor signaling pathway / cholesterol metabolic process / positive regulation of glycolytic process / extracellular matrix organization / positive regulation of mitotic cell cycle / response to interleukin-1 / axonogenesis / adult locomotory behavior / trans-Golgi network membrane / platelet alpha granule lumen / positive regulation of peptidyl-threonine phosphorylation / dendritic shaft / learning / positive regulation of interleukin-1 beta production / positive regulation of long-term synaptic potentiation / central nervous system development / endosome lumen / locomotory behavior / astrocyte activation / Post-translational protein phosphorylation / positive regulation of JNK cascade / microglial cell activation / synapse organization / regulation of long-term neuronal synaptic plasticity / TAK1-dependent IKK and NF-kappa-B activation / serine-type endopeptidase inhibitor activity / visual learning / neuromuscular junction / recycling endosome / cognition / Golgi lumen / positive regulation of inflammatory response / positive regulation of interleukin-6 production / neuron cellular homeostasis / positive regulation of non-canonical NF-kappaB signal transduction / endocytosis / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / cellular response to amyloid-beta / G2/M transition of mitotic cell cycle / positive regulation of tumor necrosis factor production / neuron projection development / cell-cell junction / synaptic vesicle / Platelet degranulation / apical part of cell Similarity search - Function | ||||||
Biological species | Homo sapiens (human) | ||||||
Method | ELECTRON MICROSCOPY / helical reconstruction / cryo EM / Resolution: 3.5 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: 2024 Title: 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. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 8sek.cif.gz | 62.1 KB | Display | PDBx/mmCIF format |
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PDB format | pdb8sek.ent.gz | 48.7 KB | Display | PDB format |
PDBx/mmJSON format | 8sek.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 8sek_validation.pdf.gz | 1.3 MB | Display | wwPDB validaton report |
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Full document | 8sek_full_validation.pdf.gz | 1.3 MB | Display | |
Data in XML | 8sek_validation.xml.gz | 24.2 KB | Display | |
Data in CIF | 8sek_validation.cif.gz | 34.4 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/se/8sek ftp://data.pdbj.org/pub/pdb/validation_reports/se/8sek | HTTPS FTP |
-Related structure data
Related structure data | 40419MC 8sehC 8seiC 8sejC 8selC 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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-Components
#1: Protein/peptide | Mass: 4335.852 Da / Num. of mol.: 10 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: APP, A4, AD1 / Production host: 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 IIIa beta amyloid 40 / 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 |
-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: GATAN K3 BIOQUANTUM (6k x 4k) |
-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: 179.77 ° / Axial rise/subunit: 2.39 Å / Axial symmetry: C1 |
3D reconstruction | Resolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 5982 / Symmetry type: HELICAL |