7LNA

Infectious mammalian prion fibril (263K scrapie)


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.14 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

High-resolution structure and strain comparison of infectious mammalian prions.

Kraus, A.Hoyt, F.Schwartz, C.L.Hansen, B.Artikis, E.Hughson, A.G.Raymond, G.J.Race, B.Baron, G.S.Caughey, B.

(2021) Mol Cell 81: 4540

  • DOI: https://doi.org/10.1016/j.molcel.2021.08.011
  • Primary Citation of Related Structures:  
    7LNA

  • PubMed Abstract: 

    Within the extensive range of self-propagating pathologic protein aggregates of mammals, prions are the most clearly infectious (e.g., ∼10 9 lethal doses per milligram). The structures of such lethal assemblies of PrP molecules have been poorly understood. Here we report a near-atomic core structure of a brain-derived, fully infectious prion (263K strain). Cryo-electron microscopy showed amyloid fibrils assembled with parallel in-register intermolecular β sheets. Each monomer provides one rung of the ordered fibril core, with N-linked glycans and glycolipid anchors projecting outward. Thus, single monomers form the templating surface for incoming monomers at fibril ends, where prion growth occurs. Comparison to another prion strain (aRML) revealed major differences in fibril morphology but, like 263K, an asymmetric fibril cross-section without paired protofilaments. These findings provide structural insights into prion propagation, strains, species barriers, and membrane pathogenesis. This structure also helps frame considerations of factors influencing the relative transmissibility of other pathologic amyloids.


  • Organizational Affiliation

    Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA. Electronic address: alk127@case.edu.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Major prion protein
A, B, C
142Mesocricetus auratusMutation(s): 0 
UniProt
Find proteins for P04273 (Mesocricetus auratus)
Explore P04273 
Go to UniProtKB:  P04273
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP04273
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.14 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX1.19
MODEL REFINEMENTREFMAC5
RECONSTRUCTIONRELION3.1

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesAI000580
Other privateUnited States--

Revision History  (Full details and data files)

  • Version 1.0: 2021-09-01
    Type: Initial release
  • Version 1.1: 2021-09-08
    Changes: Database references
  • Version 1.2: 2021-11-17
    Changes: Database references
  • Version 1.3: 2024-11-06
    Changes: Data collection, Refinement description, Structure summary