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- PDB-8sek: Type IIIa beta-amyloid 40 Filaments from Down syndrome -

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Basic information

Entry
Database: PDB / ID: 8sek
TitleType IIIa beta-amyloid 40 Filaments from Down syndrome
ComponentsType IIIb beta-amyloid 40 Filament
KeywordsNEUROPEPTIDE / Beta Amyloid filaments / Down Syndrome / Human Trisomy 21
Function / homology
Function and homology information


amyloid-beta complex / microglia development / negative regulation of presynapse assembly / cytosolic mRNA polyadenylation / collateral sprouting in absence of injury / synaptic assembly at neuromuscular junction / Formyl peptide receptors bind formyl peptides and many other ligands / regulation of synapse structure or activity / axo-dendritic transport / regulation of Wnt signaling pathway ...amyloid-beta complex / microglia development / negative regulation of presynapse assembly / cytosolic mRNA polyadenylation / collateral sprouting in absence of injury / synaptic assembly at neuromuscular junction / Formyl peptide receptors bind formyl peptides and many other ligands / regulation of synapse structure or activity / axo-dendritic transport / regulation of Wnt signaling pathway / axon midline choice point recognition / astrocyte activation involved in immune response / smooth endoplasmic reticulum calcium ion homeostasis / NMDA selective glutamate receptor signaling pathway / regulation of spontaneous synaptic transmission / mating behavior / ciliary rootlet / Golgi-associated vesicle / PTB domain binding / Lysosome Vesicle Biogenesis / positive regulation of amyloid fibril formation / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / 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 / positive regulation of protein metabolic process / dendrite development / modulation of excitatory postsynaptic potential / TRAF6 mediated NF-kB activation / presynaptic active zone / Advanced glycosylation endproduct receptor signaling / signaling receptor activator activity / The NLRP3 inflammasome / negative regulation of long-term synaptic potentiation / neuromuscular process controlling balance / transition metal ion binding / regulation of multicellular organism growth / intracellular copper ion homeostasis / regulation of presynapse assembly / negative regulation of neuron differentiation / ECM proteoglycans / spindle midzone / positive regulation of T cell migration / forebrain development / smooth endoplasmic reticulum / Purinergic signaling in leishmaniasis infection / positive regulation of chemokine production / clathrin-coated pit / Notch signaling pathway / positive regulation of G2/M transition of mitotic cell cycle / extracellular matrix organization / neuron projection maintenance / Mitochondrial protein degradation / axonogenesis / ionotropic glutamate receptor signaling pathway / positive regulation of mitotic cell cycle / cholesterol metabolic process / response to interleukin-1 / positive regulation of calcium-mediated signaling / protein serine/threonine kinase binding / platelet alpha granule lumen / positive regulation of glycolytic process / adult locomotory behavior / dendritic shaft / positive regulation of long-term synaptic potentiation / central nervous system development / positive regulation of interleukin-1 beta production / trans-Golgi network membrane / endosome lumen / learning / locomotory behavior / astrocyte activation / positive regulation of JNK cascade / Post-translational protein phosphorylation / microglial cell activation / serine-type endopeptidase inhibitor activity / regulation of long-term neuronal synaptic plasticity / synapse organization / positive regulation of non-canonical NF-kappaB signal transduction / TAK1-dependent IKK and NF-kappa-B activation / neuromuscular junction / visual learning / recycling endosome / positive regulation of interleukin-6 production / Golgi lumen / cognition / neuron cellular homeostasis / endocytosis / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / positive regulation of inflammatory response / cellular response to amyloid-beta / neuron projection development / G2/M transition of mitotic cell cycle / positive regulation of tumor necrosis factor production / apical part of cell / synaptic vesicle / Platelet degranulation / cell-cell junction
Similarity search - Function
Amyloidogenic glycoprotein, copper-binding / Amyloidogenic glycoprotein, copper-binding domain conserved site / Amyloidogenic glycoprotein, copper-binding domain superfamily / Copper-binding of amyloid precursor, CuBD / Amyloid precursor protein (APP) copper-binding (CuBD) domain signature. / Amyloidogenic glycoprotein, amyloid-beta peptide superfamily / Beta-amyloid peptide (beta-APP) / Amyloidogenic glycoprotein, amyloid-beta peptide / Beta-amyloid precursor protein C-terminal / Amyloidogenic glycoprotein, intracellular domain, conserved site ...Amyloidogenic glycoprotein, copper-binding / Amyloidogenic glycoprotein, copper-binding domain conserved site / Amyloidogenic glycoprotein, copper-binding domain superfamily / Copper-binding of amyloid precursor, CuBD / Amyloid precursor protein (APP) copper-binding (CuBD) domain signature. / Amyloidogenic glycoprotein, amyloid-beta peptide superfamily / Beta-amyloid peptide (beta-APP) / Amyloidogenic glycoprotein, amyloid-beta peptide / Beta-amyloid precursor protein C-terminal / Amyloidogenic glycoprotein, intracellular domain, conserved site / Beta-amyloid precursor protein C-terminus / Amyloid precursor protein (APP) intracellular domain signature. / Amyloidogenic glycoprotein, extracellular / Amyloidogenic glycoprotein, heparin-binding / Amyloidogenic glycoprotein, E2 domain / E2 domain superfamily / Amyloidogenic glycoprotein, heparin-binding domain superfamily / Amyloid A4 N-terminal heparin-binding / E2 domain of amyloid precursor protein / Amyloid precursor protein (APP) E1 domain profile. / Amyloid precursor protein (APP) E2 domain profile. / amyloid A4 / Amyloidogenic glycoprotein / Proteinase inhibitor I2, Kunitz, conserved site / Pancreatic trypsin inhibitor (Kunitz) family signature. / BPTI/Kunitz family of serine protease inhibitors. / Pancreatic trypsin inhibitor Kunitz domain / Kunitz/Bovine pancreatic trypsin inhibitor domain / Pancreatic trypsin inhibitor (Kunitz) family profile. / Pancreatic trypsin inhibitor Kunitz domain superfamily / PH-like domain superfamily
Similarity search - Domain/homology
Amyloid-beta precursor protein
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / helical reconstruction / cryo EM / Resolution: 3.5 Å
AuthorsHoq, M.R. / Vago, F.S. / Bharath, S.R. / Jiang, W.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute on Aging (NIH/NIA)5U01NS110437 and and 1RF1AG071177 United States
CitationJournal: 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
DepositionApr 10, 2023Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 3, 2024Provider: repository / Type: Initial release
Revision 1.1Apr 10, 2024Group: Database references / Category: citation / citation_author
Item: _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID
Revision 1.2Jun 26, 2024Group: Data collection / Database references / Category: citation / em_admin
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Type IIIb beta-amyloid 40 Filament
B: Type IIIb beta-amyloid 40 Filament
C: Type IIIb beta-amyloid 40 Filament
D: Type IIIb beta-amyloid 40 Filament
E: Type IIIb beta-amyloid 40 Filament
F: Type IIIb beta-amyloid 40 Filament
G: Type IIIb beta-amyloid 40 Filament
H: Type IIIb beta-amyloid 40 Filament
I: Type IIIb beta-amyloid 40 Filament
J: Type IIIb beta-amyloid 40 Filament


Theoretical massNumber of molelcules
Total (without water)43,35910
Polymers43,35910
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: microscopy, Helical rise=4.78 helical twist=-0.45
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein/peptide
Type IIIb beta-amyloid 40 Filament


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

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: FILAMENT / 3D reconstruction method: helical reconstruction

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Sample preparation

ComponentName: Type IIIa beta amyloid 40 / Type: TISSUE / Entity ID: all / Source: NATURAL
Source (natural)Organism: Homo sapiens (human)
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 3000 nm / Nominal defocus min: 400 nm
Image recordingElectron dose: 52.35 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

EM softwareName: RELION / Version: 4 / Category: 3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Helical symmertyAngular rotation/subunit: 179.77 ° / Axial rise/subunit: 2.39 Å / Axial symmetry: C1
3D reconstructionResolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 5982 / Symmetry type: HELICAL

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