3OW9

Structure of an amyloid forming peptide KLVFFA from amyloid beta, alternate polymorph II


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.207 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Molecular basis for amyloid-{beta} polymorphism.

Colletier, J.P.Laganowsky, A.Landau, M.Zhao, M.Soriaga, A.B.Goldschmidt, L.Flot, D.Cascio, D.Sawaya, M.R.Eisenberg, D.

(2011) Proc.Natl.Acad.Sci.USA 108: 16938-16943

  • DOI: 10.1073/pnas.1112600108
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Amyloid-beta (Aβ) aggregates are the main constituent of senile plaques, the histological hallmark of Alzheimer's disease. Aβ molecules form β-sheet containing structures that assemble into a variety of polymorphic oligomers, protofibers, and fibers ...

    Amyloid-beta (Aβ) aggregates are the main constituent of senile plaques, the histological hallmark of Alzheimer's disease. Aβ molecules form β-sheet containing structures that assemble into a variety of polymorphic oligomers, protofibers, and fibers that exhibit a range of lifetimes and cellular toxicities. This polymorphic nature of Aβ has frustrated its biophysical characterization, its structural determination, and our understanding of its pathological mechanism. To elucidate Aβ polymorphism in atomic detail, we determined eight new microcrystal structures of fiber-forming segments of Aβ. These structures, all of short, self-complementing pairs of β-sheets termed steric zippers, reveal a variety of modes of self-association of Aβ. Combining these atomic structures with previous NMR studies allows us to propose several fiber models, offering molecular models for some of the repertoire of polydisperse structures accessible to Aβ. These structures and molecular models contribute fundamental information for understanding Aβ polymorphic nature and pathogenesis.


    Organizational Affiliation

    Howard Hughes Medical Institute, Department of Biological Chemistry and Chemistry and Biochemistry, UCLA-DOE Institute for Genomics and Proteomics, University of California, Los Angeles, CA 90095, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
KLVFFA hexapeptide segment from Amyloid beta
A, B
6Homo sapiensGene Names: APP (A4, AD1)
Find proteins for P05067 (Homo sapiens)
Go to Gene View: APP
Go to UniProtKB:  P05067
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.207 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 46.053α = 90.00
b = 9.561β = 97.43
c = 20.871γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
SCALEPACKdata scaling
ADSCdata collection
BUSTER-TNTrefinement
DENZOdata reduction
PDB_EXTRACTdata extraction
BUSTERrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-08-31
    Type: Initial release
  • Version 1.1: 2011-10-12
    Type: Database references
  • Version 1.2: 2011-11-02
    Type: Database references