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- PDB-9fh1: Cryo-EM Structure of Amyloid-beta Fibrils from Mouse Brain Carryi... -

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Basic information

Entry
Database: PDB / ID: 9fh1
TitleCryo-EM Structure of Amyloid-beta Fibrils from Mouse Brain Carrying the Uppsala AbetaUpp(1-42)delta(19-24) Mutation
ComponentsAmyloid-beta precursor protein
KeywordsPROTEIN FIBRIL / Amyloid Fibril
Function / homology
Function and homology information


collateral sprouting in absence of injury / axo-dendritic transport / regulation of synapse structure or activity / axon midline choice point recognition / mating behavior / Golgi-associated vesicle / neuron remodeling / dendrite development / signaling receptor activator activity / transition metal ion binding ...collateral sprouting in absence of injury / axo-dendritic transport / regulation of synapse structure or activity / axon midline choice point recognition / mating behavior / Golgi-associated vesicle / neuron remodeling / dendrite development / signaling receptor activator activity / transition metal ion binding / intracellular copper ion homeostasis / regulation of multicellular organism growth / Notch signaling pathway / clathrin-coated pit / extracellular matrix organization / ionotropic glutamate receptor signaling pathway / positive regulation of mitotic cell cycle / axonogenesis / central nervous system development / adult locomotory behavior / locomotory behavior / serine-type endopeptidase inhibitor activity / recycling endosome / visual learning / cognition / endocytosis / neuron projection development / heparin binding / regulation of translation / growth cone / perikaryon / early endosome / cell adhesion / membrane raft / signaling receptor binding / axon / apoptotic process / cell surface / endoplasmic reticulum / Golgi apparatus / DNA binding / extracellular region / nucleus / membrane / plasma membrane / cytoplasm
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 speciesMus musculus (house mouse)
MethodELECTRON MICROSCOPY / helical reconstruction / cryo EM / Resolution: 3.2 Å
AuthorsZielinski, M. / Peralta Reyes, F.S. / Gremer, L. / Pagnon de la Vega, M. / Roeder, C. / Heidler, T.V. / Syvaenen, S. / Willbold, D. / Sehlin, D. / Ingelsson, M. / Schroeder, G.F.
Funding support Germany, 1items
OrganizationGrant numberCountry
Helmholtz AssociationIVF Germany
CitationJournal: Acta Neuropathol Commun / Year: 2025
Title: Cryo-EM studies of amyloid-β fibrils from human and murine brains carrying the Uppsala APP mutation (Δ690-695).
Authors: Mara Zielinski / Fernanda S Peralta Reyes / Lothar Gremer / Simon Sommerhage / María Pagnon de la Vega / Christine Röder / Thomas V Heidler / Stina Syvänen / Dieter Willbold / Dag Sehlin ...Authors: Mara Zielinski / Fernanda S Peralta Reyes / Lothar Gremer / Simon Sommerhage / María Pagnon de la Vega / Christine Röder / Thomas V Heidler / Stina Syvänen / Dieter Willbold / Dag Sehlin / Martin Ingelsson / Gunnar F Schröder /
Abstract: Today, 13 intra-amyloid-β (Aβ) amyloid precursor protein (APP) gene mutations are known to cause familial Alzheimer's disease (AD). Most of them are point mutations causing an increased production ...Today, 13 intra-amyloid-β (Aβ) amyloid precursor protein (APP) gene mutations are known to cause familial Alzheimer's disease (AD). Most of them are point mutations causing an increased production or a change in the conformation of Aβ. The Uppsala APP mutation (Δ690-695 in APP, Δ19-24 in Aβ) is the first known multi-codon deletion causing autosomal dominant AD. Here, we applied cryo-electron microscopy (cryo-EM) to investigate the structure of Aβ fibrils with the Uppsala APP mutation from tg-UppSwe mouse brain tissue. Murine AβUpp(1-42) are made of two identical S-shaped protofilaments with an ordered fibril core of S8-A42. The murine Aβ fold is almost identical to previously described human type II filaments, although the amino acid sequences differ considerably. In addition, we report the cryo-EM structure of Aβ fibrils from the temporal cortex of a patient with the Uppsala APP mutation. The observed structure of the human Aβ fold closely resembles previously described type I fibrils. Structural modeling suggests that these fibrils are composed of wild-type Aβ, which implies that AβUpp may be less soluble and thus not readily accessible for cryo-EM image processing and structure determination. Additionally, from the human sample we determined the structures of tau paired helical filaments and tau straight filaments, which are identical to those found in sporadic AD cases. Finally, we present the 3D cryo-EM structures of four dominant AβUpp(1-42) fibril polymorphs, formed in vitro. All four polymorphs differ from the observed folds of Uppsala Aβ in murine and human brain tissue, respectively.
History
DepositionMay 26, 2024Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jun 11, 2025Provider: repository / Type: Initial release
Revision 1.0Jun 11, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Jun 11, 2025Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Jun 11, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
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Revision 1.0Jun 11, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Jun 11, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.1Oct 22, 2025Group: Data collection / Database references / Category: citation / citation_author / em_admin
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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
H: Amyloid-beta precursor protein
I: Amyloid-beta precursor protein
J: Amyloid-beta precursor protein


Theoretical massNumber of molelcules
Total (without water)38,11310
Polymers38,11310
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

#1: Protein/peptide
Amyloid-beta precursor protein


Mass: 3811.330 Da / Num. of mol.: 10 / Mutation: delta(19-24) / Source method: isolated from a natural source / Source: (natural) Mus musculus (house mouse) / Organ: brain / Variant: Tg-UppSwe / Tissue: brain / References: UniProt: Q60495
Has protein modificationN

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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: Amyloid fibrils of amyloid-beta(1-42)delta(19-24) extracted from mouse brain.
Type: TISSUE / Entity ID: all / Source: NATURAL
Source (natural)Organism: Mus musculus (house mouse) / Organ: brain / Tissue: brain
Buffer solutionpH: 7
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: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 3000 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 40 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k)

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Processing

EM software
IDNameVersionCategory
13PHENIX1.20.1model refinement
14ISOLDE1.7.1model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Helical symmertyAngular rotation/subunit: 178.4 ° / Axial rise/subunit: 2.36 Å / Axial symmetry: C1
3D reconstructionResolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 329437 / Symmetry type: HELICAL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0072070
ELECTRON MICROSCOPYf_angle_d0.7992770
ELECTRON MICROSCOPYf_dihedral_angle_d5.902290
ELECTRON MICROSCOPYf_chiral_restr0.064330
ELECTRON MICROSCOPYf_plane_restr0.002340

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