General structural motifs of amyloid protofilaments

Experimental Data Snapshot

  • Conformers Calculated: 30 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report

This is version 1.4 of the entry. See complete history


General structural motifs of amyloid protofilaments.

Ferguson, N.Becker, J.Tidow, H.Tremmel, S.Sharpe, T.D.Krause, G.Flinders, J.Petrovich, M.Berriman, J.Oschkinat, H.Fersht, A.R.

(2006) Proc Natl Acad Sci U S A 103: 16248-16253

  • DOI: https://doi.org/10.1073/pnas.0607815103
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Human CA150, a transcriptional activator, binds to and is co-deposited with huntingtin during Huntington's disease. The second WW domain of CA150 is a three-stranded beta-sheet that folds in vitro in microseconds and forms amyloid fibers under physiological conditions. We found from exhaustive alanine scanning studies that fibrillation of this WW domain begins from its denatured conformations, and we identified a subset of residues critical for fibril formation. We used high-resolution magic-angle-spinning NMR studies on site-specific isotopically labeled fibrils to identify abundant long-range interactions between side chains. The distribution of critical residues identified by the alanine scanning and NMR spectroscopy, along with the electron microscopy data, revealed the protofilament repeat unit: a 26-residue non-native beta-hairpin. The structure we report has similarities to the hairpin formed by the A(beta)((1-40)) protofilament, yet also contains closely packed side-chains in a "steric zipper" arrangement found in the cross-beta spine formed from small peptides from the Sup35 prion protein. Fibrillation of unrelated amyloidogenic sequences shows the common feature of zippered repeat units that act as templates for fiber elongation.

  • Organizational Affiliation

    Medical Research Council Centre for Protein Engineering, Hills Road, Cambridge CB2 2QH, United Kingdom. nf1@mrc-lmb.cam.ac.uk

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Transcription elongation regulator 1
A, B, C, D
40Homo sapiensMutation(s): 1 
Gene Names: TCERG1CA150TAF2S
UniProt & NIH Common Fund Data Resources
Find proteins for O14776 (Homo sapiens)
Explore O14776 
Go to UniProtKB:  O14776
GTEx:  ENSG00000113649 
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UniProt GroupO14776
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Conformers Calculated: 30 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-11-14
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-10-20
    Changes: Data collection, Database references
  • Version 1.4: 2023-12-27
    Changes: Data collection