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- PDB-8a00: Infectious mouse-adapted ME7 scrapie prion fibril purified from t... -

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Basic information

Entry
Database: PDB / ID: 8a00
TitleInfectious mouse-adapted ME7 scrapie prion fibril purified from terminally-infected mouse brains
ComponentsMajor prion protein
KeywordsPROTEIN FIBRIL / Prion
Function / homology
Function and homology information


Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / negative regulation of amyloid precursor protein catabolic process / lamin binding / regulation of glutamate receptor signaling pathway / regulation of calcium ion import across plasma membrane / aspartic-type endopeptidase inhibitor activity / glycosaminoglycan binding / ATP-dependent protein binding / regulation of potassium ion transmembrane transport / negative regulation of interleukin-17 production ...Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / negative regulation of amyloid precursor protein catabolic process / lamin binding / regulation of glutamate receptor signaling pathway / regulation of calcium ion import across plasma membrane / aspartic-type endopeptidase inhibitor activity / glycosaminoglycan binding / ATP-dependent protein binding / regulation of potassium ion transmembrane transport / negative regulation of interleukin-17 production / negative regulation of dendritic spine maintenance / type 5 metabotropic glutamate receptor binding / cupric ion binding / nucleobase-containing compound metabolic process / response to copper ion / negative regulation of calcineurin-NFAT signaling cascade / negative regulation of interleukin-2 production / negative regulation of T cell receptor signaling pathway / activation of protein kinase activity / cuprous ion binding / negative regulation of amyloid-beta formation / negative regulation of activated T cell proliferation / response to amyloid-beta / : / negative regulation of type II interferon production / negative regulation of long-term synaptic potentiation / intracellular copper ion homeostasis / positive regulation of protein targeting to membrane / side of membrane / response to cadmium ion / regulation of peptidyl-tyrosine phosphorylation / inclusion body / cellular response to copper ion / neuron projection maintenance / negative regulation of protein phosphorylation / molecular condensate scaffold activity / molecular function activator activity / positive regulation of protein localization to plasma membrane / protein destabilization / protein homooligomerization / negative regulation of DNA-binding transcription factor activity / terminal bouton / cellular response to amyloid-beta / regulation of protein localization / positive regulation of peptidyl-tyrosine phosphorylation / positive regulation of neuron apoptotic process / cellular response to xenobiotic stimulus / signaling receptor activity / amyloid-beta binding / protein-folding chaperone binding / microtubule binding / nuclear membrane / protease binding / response to oxidative stress / transmembrane transporter binding / molecular adaptor activity / postsynaptic density / learning or memory / membrane raft / copper ion binding / dendrite / protein-containing complex binding / negative regulation of apoptotic process / Golgi apparatus / cell surface / endoplasmic reticulum / identical protein binding / membrane / metal ion binding / plasma membrane / cytosol
Similarity search - Function
Prion protein signature 1. / Prion protein signature 2. / Major prion protein N-terminal domain / Major prion protein bPrPp - N terminal / Prion protein / Major prion protein / Prion/Doppel protein, beta-ribbon domain / Prion/Doppel beta-ribbon domain superfamily / Prion/Doppel alpha-helical domain
Similarity search - Domain/homology
Biological speciesMus musculus (house mouse)
MethodELECTRON MICROSCOPY / helical reconstruction / cryo EM / Resolution: 2.6 Å
AuthorsManka, S.W. / Wenborn, A. / Betts, J. / Joiner, S. / Saibil, H.R. / Collinge, J. / Wadsworth, J.D.F.
Funding support United Kingdom, 5items
OrganizationGrant numberCountry
Medical Research Council (MRC, United Kingdom)MC_U12316055 United Kingdom
Medical Research Council (MRC, United Kingdom)MC_UU_00024/5 United Kingdom
Wellcome Trust(202679/Z/16/Z United Kingdom
Wellcome Trust206166/Z/17/Z United Kingdom
Wellcome Trust106249/Z/14/Z United Kingdom
Citation
Journal: Nat Chem Biol / Year: 2023
Title: A structural basis for prion strain diversity.
Authors: Szymon W Manka / Adam Wenborn / Jemma Betts / Susan Joiner / Helen R Saibil / John Collinge / Jonathan D F Wadsworth /
Abstract: Recent cryogenic electron microscopy (cryo-EM) studies of infectious, ex vivo, prion fibrils from hamster 263K and mouse RML prion strains revealed a similar, parallel in-register intermolecular β- ...Recent cryogenic electron microscopy (cryo-EM) studies of infectious, ex vivo, prion fibrils from hamster 263K and mouse RML prion strains revealed a similar, parallel in-register intermolecular β-sheet (PIRIBS) amyloid architecture. Rungs of the fibrils are composed of individual prion protein (PrP) monomers that fold to create distinct N-terminal and C-terminal lobes. However, disparity in the hamster/mouse PrP sequence precludes understanding of how divergent prion strains emerge from an identical PrP substrate. In this study, we determined the near-atomic resolution cryo-EM structure of infectious, ex vivo mouse prion fibrils from the ME7 prion strain and compared this with the RML fibril structure. This structural comparison of two biologically distinct mouse-adapted prion strains suggests defined folding subdomains of PrP rungs and the way in which they are interrelated, providing a structural definition of intra-species prion strain-specific conformations.
#1: Journal: Biorxiv / Year: 2023
Title: A structural basis for prion strain diversity
Authors: Manka, S.W. / Wenborn, A. / Betts, J. / Joiner, S. / Saibil, H.R. / Collinge, J. / Wadsworth, J.D.F.
History
DepositionMay 26, 2022Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jan 18, 2023Provider: repository / Type: Initial release
Revision 1.1Feb 8, 2023Group: Database references / Category: citation / citation_author
Revision 1.2May 10, 2023Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Major prion protein
C: Major prion protein
B: Major prion protein


Theoretical massNumber of molelcules
Total (without water)47,3303
Polymers47,3303
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Major prion protein / PrP / PrP27-30 / PrP33-35C


Mass: 15776.630 Da / Num. of mol.: 3 / Source method: isolated from a natural source / Source: (natural) Mus musculus (house mouse) / References: UniProt: P04925

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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 fibril of prion protein / Type: COMPLEX / Entity ID: all / Source: NATURAL
Source (natural)Organism: Mus musculus (house mouse)
Buffer solutionpH: 6.8
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: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 5000 nm / Nominal defocus min: 500 nm
Image recordingElectron dose: 49 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM software
IDNameVersionCategoryDetails
4RELION4.0-betaCTF correctionCTFFIND4.1
7Cootmodel fitting
9RELION4.0-betainitial Euler assignment
10RELION4.0-betafinal Euler assignment
11RELION4.0-betaclassification
12RELION4.0-beta3D reconstruction
13PHENIXmodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Helical symmertyAngular rotation/subunit: -0.54 ° / Axial rise/subunit: 4.8 Å / Axial symmetry: C1
3D reconstructionResolution: 2.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 40239 / Symmetry type: HELICAL
Atomic model buildingProtocol: FLEXIBLE FIT / Space: REAL

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