Atomic-resolution structure of a cross-beta protofilament

Experimental Data Snapshot

  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the least restraint violations 

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Atomic structure and hierarchical assembly of a cross-{beta} amyloid fibril.

Fitzpatrick, A.W.Debelouchina, G.T.Bayro, M.J.Clare, D.K.Caporini, M.A.Bajaj, V.S.Jaroniec, C.P.Wang, L.Ladizhansky, V.Muller, S.A.MacPhee, C.E.Waudby, C.A.Mott, H.R.De Simone, A.Knowles, T.P.Saibil, H.R.Vendruscolo, M.Orlova, E.V.Griffin, R.G.Dobson, C.M.

(2013) Proc Natl Acad Sci U S A 110: 5468-5473

  • DOI: https://doi.org/10.1073/pnas.1219476110
  • Primary Citation of Related Structures:  
    2M5K, 2M5M, 2M5N, 3ZPK

  • PubMed Abstract: 

    The cross-β amyloid form of peptides and proteins represents an archetypal and widely accessible structure consisting of ordered arrays of β-sheet filaments. These complex aggregates have remarkable chemical and physical properties, and the conversion of normally soluble functional forms of proteins into amyloid structures is linked to many debilitating human diseases, including several common forms of age-related dementia. Despite their importance, however, cross-β amyloid fibrils have proved to be recalcitrant to detailed structural analysis. By combining structural constraints from a series of experimental techniques spanning five orders of magnitude in length scale--including magic angle spinning nuclear magnetic resonance spectroscopy, X-ray fiber diffraction, cryoelectron microscopy, scanning transmission electron microscopy, and atomic force microscopy--we report the atomic-resolution (0.5 Å) structures of three amyloid polymorphs formed by an 11-residue peptide. These structures reveal the details of the packing interactions by which the constituent β-strands are assembled hierarchically into protofilaments, filaments, and mature fibrils.

  • Organizational Affiliation

    Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, United Kingdom.


Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C, D, E
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P
11Homo sapiensMutation(s): 0 
Gene Names: TTRPALB
UniProt & NIH Common Fund Data Resources
Find proteins for P02766 (Homo sapiens)
Explore P02766 
Go to UniProtKB:  P02766
PHAROS:  P02766
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UniProt GroupP02766
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the least restraint violations 

Structure Validation

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Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2013-07-17
    Type: Initial release
  • Version 1.1: 2023-06-14
    Changes: Database references, Other