3NYL

The X-ray structure of an antiparallel dimer of the human amyloid precursor protein E2 domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.322 
  • R-Value Work: 0.258 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

The X-ray structure of an antiparallel dimer of the human amyloid precursor protein E2 domain.

Wang, Y.Ha, Y.

(2004) Mol.Cell 15: 343-353

  • DOI: 10.1016/j.molcel.2004.06.037
  • Primary Citation of Related Structures:  
  • Also Cited By: 3K6B, 3K66

  • PubMed Abstract: 
  • Amyloid beta-peptide, which forms neuronal and vascular amyloid deposits in Alzheimer's disease, is derived from an integral membrane protein precursor. The biological function of the precursor is currently unclear. Here we describe the X-ray structu ...

    Amyloid beta-peptide, which forms neuronal and vascular amyloid deposits in Alzheimer's disease, is derived from an integral membrane protein precursor. The biological function of the precursor is currently unclear. Here we describe the X-ray structure of E2, the largest of the three conserved domains of the precursor. The structure of E2 consists of two coiled-coil substructures connected through a continuous helix and bears an unexpected resemblance to the spectrin family of protein structures. E2 can reversibly dimerize in the solution, and the dimerization occurs along the longest dimension of the molecule in an antiparallel orientation, which enables the N-terminal substructure of one monomer to pack against the C-terminal substructure of a second monomer. Heparan sulfate proteoglycans, the putative ligand for the precursor present in extracellular matrix, bind to E2 at a conserved and positively charged site near the dimer interface.


    Organizational Affiliation

    Department of Pharmacology, Yale School of Medicine, 333 Cedar Street, New Haven, CT 06520, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Amyloid beta (A4) protein (Peptidase nexin-II, Alzheimer disease), isoform CRA_b
A
210Homo sapiensMutation(s): 0 
Gene 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: 2.8 Å
  • R-Value Free: 0.322 
  • R-Value Work: 0.258 
  • Space Group: I 4 2 2
Unit Cell:
Length (Å)Angle (°)
a = 83.589α = 90.00
b = 83.589β = 90.00
c = 147.341γ = 90.00
Software Package:
Software NamePurpose
SOLVEphasing
CBASSdata collection
HKL-2000data reduction
DMphasing
SCALEPACKdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-07-13
    Type: Initial release