Biological Assembly 1  

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 1.5 kDa 
• Atom Count: 118 
• Modelled Residue Count: 12 
• Deposited Residue Count: 12 
• Unique protein chains: 1

 2ON9

Structure of an amyloid forming peptide VQIVYK from the repeat region of Tau

• PDB DOI: 10.2210/pdb2ON9/pdb

• Classification: PROTEIN FIBRIL
• Mutation(s): No 


• Deposited: 2007-01-23 Released: 2007-01-30 
• Deposition Author(s): Sambashivan, S., Sawaya, M.R., Eisenberg, D.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.51 Å
• R-Value Free: 0.225 
• R-Value Work: 0.206 
• R-Value Observed: 0.207 

Literature

Atomic structures of amyloid cross-beta spines reveal varied steric zippers.

Sawaya, M.R., Sambashivan, S., Nelson, R., Ivanova, M.I., Sievers, S.A., Apostol, M.I., Thompson, M.J., Balbirnie, M., Wiltzius, J.J., McFarlane, H.T., Madsen, A.O., Riekel, C., Eisenberg, D.

(2007) Nature 447: 453-457

• PubMed: 17468747 
• DOI: 10.1038/nature05695
• Primary Citation of Related Structures:  
  2OKZ, 2OL9, 2OLX, 2OMM, 2OMP, 2OMQ, 2ON9, 2ONA, 2ONV, 2ONW, 2ONX


• PubMed Abstract: 
  

Amyloid fibrils formed from different proteins, each associated with a particular disease, contain a common cross-beta spine. The atomic architecture of a spine, from the fibril-forming segment GNNQQNY of the yeast prion protein Sup35, was recently revealed by X-ray microcrystallography. It is a pair of beta-sheets, with the facing side chains of the two sheets interdigitated in a dry 'steric zipper'. Here we report some 30 other segments from fibril-forming proteins that form amyloid-like fibrils, microcrystals, or usually both. These include segments from the Alzheimer's amyloid-beta and tau proteins, the PrP prion protein, insulin, islet amyloid polypeptide (IAPP), lysozyme, myoglobin, alpha-synuclein and beta(2)-microglobulin, suggesting that common structural features are shared by amyloid diseases at the molecular level. Structures of 13 of these microcrystals all reveal steric zippers, but with variations that expand the range of atomic architectures for amyloid-like fibrils and offer an atomic-level hypothesis for the basis of prion strains.

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Organizational Affiliation: 

Howard Hughes Medical Institute, UCLA-DOE Institute of Genomics and Proteomics, Los Angeles, California 90095-1570, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
VQIVYK peptide corresponding to residues 306-311 in the tau protein	A, B	6	N/A	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P10636 (Homo sapiens) Explore P10636  Go to UniProtKB:  P10636
PHAROS:  P10636

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.51 Å
• R-Value Free: 0.225 
• R-Value Work: 0.206 
• R-Value Observed: 0.207 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 4.863	α = 90
b = 61.926	β = 98.11
c = 15.413	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2007-01-30 
Deposition Author(s): Sambashivan, S., Sawaya, M.R., Eisenberg, D.

Revision History  

• Version 1.0: 2007-01-30
  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: 2017-10-18
  Changes: Refinement description