4HIX

Crystal structure of a humanised 3D6 Fab bound to amyloid beta peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.204 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.170 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Bapineuzumab captures the N-terminus of the Alzheimer's disease amyloid-beta peptide in a helical conformation.

Miles, L.A.Crespi, G.A.Doughty, L.Parker, M.W.

(2013) Sci Rep 3: 1302-1302

  • DOI: 10.1038/srep01302
  • Also Cited By: 4OJF

  • PubMed Abstract: 
  • Bapineuzumab is a humanized antibody developed by Pfizer and Johnson & Johnson targeting the amyloid (Aβ) plaques that underlie Alzheimer's disease neuropathology. Here we report the crystal structure of a Fab-Aβ peptide complex that reveals Bapineuz ...

    Bapineuzumab is a humanized antibody developed by Pfizer and Johnson & Johnson targeting the amyloid (Aβ) plaques that underlie Alzheimer's disease neuropathology. Here we report the crystal structure of a Fab-Aβ peptide complex that reveals Bapineuzumab surprisingly captures Aβ in a monomeric helical conformation at the N-terminus. Microscale thermophoresis suggests that the Fab binds soluble Aβ(1-40) with a K(D) of 89 (±9) nM. The structure explains the antibody's exquisite selectivity for particular Aβ species and why it cannot recognize N-terminally modified or truncated Aβ peptides.


    Organizational Affiliation

    ACRF Rational Drug Discovery Centre and Biota Structural Biology Laboratory, St. Vincent's Institute of Medical Research, Fitzroy, Victoria 3056, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Humanized 3D6 Fab heavy chain
H
227Homo sapiensMutation(s): 0 
Gene Names: IGHG1
Find proteins for P01857 (Homo sapiens)
Go to UniProtKB:  P01857
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Humanized 3D6 Fab light chain
L
220Homo sapiensMutation(s): 0 
Gene Names: IGKC
Find proteins for P01834 (Homo sapiens)
Go to UniProtKB:  P01834
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Beta-amyloid protein 40
A
28Homo 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: 2.204 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.170 
  • Space Group: P 21 2 21
Unit Cell:
Length (Å)Angle (°)
a = 59.343α = 90.00
b = 83.039β = 90.00
c = 91.224γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-03-13
    Type: Initial release
  • Version 1.1: 2013-03-20
    Type: Structure summary
  • Version 1.2: 2013-10-02
    Type: Source and taxonomy
  • Version 1.3: 2014-03-19
    Type: Source and taxonomy