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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


amyloid-beta complex / growth cone lamellipodium / cellular response to norepinephrine stimulus / collateral sprouting in absence of injury / growth cone filopodium / microglia development / hippocampal neuron apoptotic process / Formyl peptide receptors bind formyl peptides and many other ligands / regulation of Wnt signaling pathway / axo-dendritic transport ...amyloid-beta complex / growth cone lamellipodium / cellular response to norepinephrine stimulus / collateral sprouting in absence of injury / growth cone filopodium / microglia development / hippocampal neuron apoptotic process / Formyl peptide receptors bind formyl peptides and many other ligands / regulation of Wnt signaling pathway / axo-dendritic transport / axon midline choice point recognition / regulation of synapse structure or activity / 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 / positive regulation of amyloid fibril formation / Golgi-associated vesicle / PTB domain binding / astrocyte projection / Lysosome Vesicle Biogenesis / Deregulated CDK5 triggers multiple neurodegenerative pathways in Alzheimer's disease models / neuron remodeling / nuclear envelope lumen / dendrite development / regulation of multicellular organism growth / TRAF6 mediated NF-kB activation / positive regulation of protein metabolic process / signaling receptor activator activity / negative regulation of long-term synaptic potentiation / transition metal ion binding / Advanced glycosylation endproduct receptor signaling / The NLRP3 inflammasome / modulation of excitatory postsynaptic potential / main axon / intracellular copper ion homeostasis / ECM proteoglycans / Notch signaling pathway / response to insulin-like growth factor stimulus / positive regulation of T cell migration / regulation of presynapse assembly / neuronal dense core vesicle / swimming behavior / Purinergic signaling in leishmaniasis infection / positive regulation of calcium-mediated signaling / adult locomotory behavior / positive regulation of mitotic cell cycle / axonogenesis / extracellular matrix organization / cellular response to manganese ion / positive regulation of chemokine production / neuron projection maintenance / clathrin-coated pit / astrocyte activation / Mitochondrial protein degradation / regulation of neuron apoptotic process / ionotropic glutamate receptor signaling pathway / platelet alpha granule lumen / learning / response to interleukin-1 / cellular response to copper ion / positive regulation of glycolytic process / cellular response to cAMP / endosome lumen / trans-Golgi network membrane / positive regulation of interleukin-1 beta production / dendritic shaft / positive regulation of long-term synaptic potentiation / protein serine/threonine kinase binding / locomotory behavior / central nervous system development / Post-translational protein phosphorylation / serine-type endopeptidase inhibitor activity / regulation of long-term neuronal synaptic plasticity / microglial cell activation / cellular response to nerve growth factor stimulus / visual learning / positive regulation of non-canonical NF-kappaB signal transduction / TAK1-dependent IKK and NF-kappa-B activation / synapse organization / positive regulation of interleukin-6 production / recycling endosome / response to lead ion / Golgi lumen / positive regulation of JNK cascade / cognition / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / cellular response to amyloid-beta / neuron projection development / endocytosis / positive regulation of inflammatory response / calcium ion transport / positive regulation of tumor necrosis factor production / Platelet degranulation / heparin binding / regulation of translation / regulation of gene expression
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, heparin-binding / Amyloid A4 N-terminal heparin-binding / Amyloidogenic glycoprotein, amyloid-beta peptide superfamily / Beta-amyloid peptide (beta-APP) / Amyloidogenic glycoprotein, amyloid-beta peptide ...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, heparin-binding / Amyloid A4 N-terminal heparin-binding / 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, E2 domain / E2 domain superfamily / Amyloidogenic glycoprotein, heparin-binding domain superfamily / 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: 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 (eV)
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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