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- PDB-8ff2: Amyloid-beta (1-40) fibrils derived from a CAA patient -

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Basic information

Entry
Database: PDB / ID: 8ff2
TitleAmyloid-beta (1-40) fibrils derived from a CAA patient
ComponentsAmyloid-beta precursor protein
KeywordsPROTEIN FIBRIL / amyloid / vascular / fibril / human
Function / homology
Function and homology information


regulation of epidermal growth factor-activated receptor activity / cytosolic mRNA polyadenylation / collateral sprouting in absence of injury / microglia development / regulation of synapse structure or activity / regulation of Wnt signaling pathway / Formyl peptide receptors bind formyl peptides and many other ligands / axo-dendritic transport / synaptic assembly at neuromuscular junction / signaling receptor activator activity ...regulation of epidermal growth factor-activated receptor activity / cytosolic mRNA polyadenylation / collateral sprouting in absence of injury / microglia development / regulation of synapse structure or activity / regulation of Wnt signaling pathway / Formyl peptide receptors bind formyl peptides and many other ligands / axo-dendritic transport / synaptic assembly at neuromuscular junction / signaling receptor activator activity / 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 / Deregulated CDK5 triggers multiple neurodegenerative pathways in Alzheimer's disease models / suckling behavior / nuclear envelope lumen / dendrite development / COPII-coated ER to Golgi transport vesicle / 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 / regulation of presynapse assembly / transition metal ion binding / negative regulation of long-term synaptic potentiation / regulation of multicellular organism growth / intracellular copper ion homeostasis / 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 / protein serine/threonine kinase binding / positive regulation of chemokine production / clathrin-coated pit / regulation of peptidyl-tyrosine phosphorylation / forebrain development / Notch signaling pathway / Mitochondrial protein degradation / neuron projection maintenance / positive regulation of G2/M transition of mitotic cell cycle / positive regulation of protein metabolic process / ionotropic glutamate receptor signaling pathway / positive regulation of glycolytic process / cholesterol metabolic process / positive regulation of mitotic cell cycle / response to interleukin-1 / adult locomotory behavior / extracellular matrix organization / axonogenesis / platelet alpha granule lumen / trans-Golgi network membrane / positive regulation of peptidyl-threonine phosphorylation / dendritic shaft / learning / positive regulation of interleukin-1 beta production / positive regulation of long-term synaptic potentiation / locomotory behavior / central nervous system development / endosome lumen / astrocyte activation / positive regulation of JNK cascade / Post-translational protein phosphorylation / 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 / neuron cellular homeostasis / Golgi lumen / positive regulation of inflammatory response / positive regulation of non-canonical NF-kappaB signal transduction / endocytosis / cellular response to amyloid-beta / G2/M transition of mitotic cell cycle / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / positive regulation of interleukin-6 production / positive regulation of tumor necrosis factor production / neuron projection development / cell-cell junction / synaptic vesicle
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. / Amyloid precursor protein (APP) E1 domain profile. / Amyloid precursor protein (APP) E2 domain profile. / 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 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: 2.87 Å
AuthorsCrooks, E.J. / Fu, Z. / Chowdhury, S. / Smith, S.O.
Funding support United States, 2items
OrganizationGrant numberCountry
National Institutes of Health/National Institute on Aging (NIH/NIA)AG027317 United States
National Institutes of Health/National Institute on Aging (NIH/NIA)AG061775 United States
CitationJournal: J Struct Biol / Year: 2024
Title: An electrostatic cluster guides Aβ40 fibril formation in sporadic and Dutch-type cerebral amyloid angiopathy.
Authors: Ziao Fu / Elliot J Crooks / Brandon A Irizarry / Xiaoyue Zhu / Saikat Chowdhury / William E Van Nostrand / Steven O Smith /
Abstract: Cerebral amyloid angiopathy (CAA) is associated with the accumulation of fibrillar Aβ peptides upon and within the cerebral vasculature, which leads to loss of vascular integrity and contributes to ...Cerebral amyloid angiopathy (CAA) is associated with the accumulation of fibrillar Aβ peptides upon and within the cerebral vasculature, which leads to loss of vascular integrity and contributes to disease progression in Alzheimer's disease (AD). We investigate the structure of human-derived Aβ40 fibrils obtained from patients diagnosed with sporadic or familial Dutch-type (E22Q) CAA. Using cryo-EM, two primary structures are identified containing elements that have not been observed in in vitro Aβ40 fibril structures. One population has an ordered N-terminal fold comprised of two β-strands stabilized by electrostatic interactions involving D1, E22, D23 and K28. This charged cluster is disrupted in the second population, which exhibits a disordered N-terminus and is favored in fibrils derived from the familial Dutch-type CAA patient. These results illustrate differences between human-derived CAA and AD fibrils, and how familial CAA mutations can guide fibril formation.
History
DepositionDec 7, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Dec 6, 2023Provider: repository / Type: Initial release
Revision 1.1Apr 24, 2024Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _citation_author.identifier_ORCID / _citation_author.name
Revision 1.2May 1, 2024Group: Database references / Category: citation / Item: _citation.journal_volume

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Amyloid-beta precursor protein
B: Amyloid-beta precursor protein
C: Amyloid-beta precursor protein
D: Amyloid-beta precursor protein
E: Amyloid-beta precursor protein
F: Amyloid-beta precursor protein
G: Amyloid-beta precursor protein
I: Amyloid-beta precursor protein
J: Amyloid-beta precursor protein
K: Amyloid-beta precursor protein


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


  • Idetical with deposited unit
  • defined by author
  • Evidence: NMR Distance Restraints
TypeNameSymmetry operationNumber
identity operation1_5551
SymmetryHelical symmetry: (Circular symmetry: 1 / Dyad axis: no / N subunits divisor: 1 / Num. of operations: 10 / Rise per n subunits: 2.44 Å / Rotation per n subunits: -178.83 °)

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Components

#1: Protein/peptide
Amyloid-beta precursor protein / APP / ABPP / APPI / Alzheimer disease amyloid protein / Amyloid precursor protein / Amyloid-beta A4 ...APP / ABPP / APPI / Alzheimer disease amyloid protein / Amyloid precursor protein / Amyloid-beta A4 protein / Cerebral vascular amyloid peptide / CVAP / PreA4 / Protease nexin-II / PN-II


Mass: 4335.852 Da / Num. of mol.: 10 / Fragment: UNP residues 653-692 / Source method: obtained synthetically / Source: (synth.) 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: Fibrillar assembly of human Amyloid-beta 1-40 derived from vascular deposits in a cerebral amyloid angiopathy patient
Type: COMPLEX / Entity ID: all / Source: NATURAL
Molecular weightValue: 4.3299 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human) / Organ: Brain / Tissue: Vasculature
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Details: Templated growth from human-derived vascular amyloid deposits
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 295 K

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Electron microscopy imaging

Experimental equipment
Model: Talos Arctica / Image courtesy: FEI Company
MicroscopyModel: FEI TALOS ARCTICA
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 200 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 92000 X / Nominal defocus max: 1400 nm / Nominal defocus min: 800 nm / Cs: 2.7 mm / C2 aperture diameter: 70 µm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN
Image recordingAverage exposure time: 85.83 sec. / Electron dose: 49.7 e/Å2 / Detector mode: COUNTING / Film or detector model: FEI FALCON III (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 2075
Image scansWidth: 4096 / Height: 4096 / Movie frames/image: 100 / Used frames/image: 1-99

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Processing

SoftwareName: PHENIX / Version: 1.20.1_4487: / Classification: refinement
EM software
IDNameVersionCategoryDetails
1RELION3.1.1particle selection
2EPUimage acquisition
4Gctf1.06CTF correctionPer-micrograph correction
5RELION3.1.1CTF correctionPer-particle correction
8Cootmodel fitting
10PHENIX1.19.1model refinement
11ISOLDE1.4model refinement
12RELION3.1.1initial Euler assignment
13RELION3.1.1final Euler assignment
14RELION3.1.1classification
15RELION3.1.13D reconstruction
CTF correctionDetails: Per-micrograph correction via Gctf. Aberration, magnification, and per-particle corrections via RELION.
Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
Helical symmertyAngular rotation/subunit: -178.83 ° / Axial rise/subunit: 2.44 Å / Axial symmetry: C1
Particle selectionNum. of particles selected: 68357 / Details: Manual helical picking and extraction
3D reconstructionResolution: 2.87 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 59075 / Algorithm: FOURIER SPACE / Num. of class averages: 1 / Symmetry type: HELICAL
Atomic model buildingB value: 31.1 / Protocol: AB INITIO MODEL / Space: REAL
Atomic model buildingPDB-ID: 6SHS

6shs


Pdb chain-ID: A / Accession code: 6SHS / Pdb chain residue range: 1-40 / Source name: PDB / Type: experimental model
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0052970
ELECTRON MICROSCOPYf_angle_d0.413970
ELECTRON MICROSCOPYf_dihedral_angle_d10.6341020
ELECTRON MICROSCOPYf_chiral_restr0.044400
ELECTRON MICROSCOPYf_plane_restr0.002530

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