1CR9

CRYSTAL STRUCTURE OF THE ANTI-PRION FAB 3F4


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.171 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Antibody binding defines a structure for an epitope that participates in the PrPC-->PrPSc conformational change.

Kanyo, Z.F.Pan, K.M.Williamson, R.A.Burton, D.R.Prusiner, S.B.Fletterick, R.J.Cohen, F.E.

(1999) J.Mol.Biol. 293: 855-863

  • DOI: 10.1006/jmbi.1999.3193
  • Primary Citation of Related Structures:  1CU4

  • PubMed Abstract: 
  • The X-ray crystallographic structures of the anti-Syrian hamster prion protein (SHaPrP) monoclonal Fab 3F4 alone, as well as the complex with its cognate peptide epitope (SHaPrP 104-113), have been determined to atomic resolution. The conformation of ...

    The X-ray crystallographic structures of the anti-Syrian hamster prion protein (SHaPrP) monoclonal Fab 3F4 alone, as well as the complex with its cognate peptide epitope (SHaPrP 104-113), have been determined to atomic resolution. The conformation of the decapeptide is an Omega-loop. There are substantial alterations in the antibody combining region upon epitope binding. The peptide binds in a U-shaped groove on the Fab surface, with the two specificity determinants, Met109 and Met112, penetrating deeply into separate hydrophobic cavities formed by the heavy and light chain complementarity-determining regions. In addition to the numerous contacts between the Fab and the peptide, two intrapeptide hydrogen bonds are observed, perhaps indicating the structure bound to the Fab exists transiently in solution. This provides the first structural information on a portion of the PrP N-terminal region observed to be flexible in the NMR studies of SHPrP 90-231, SHaPrP 29-231 and mouse PrP 23-231. Antibody characterization of the antigenic surfaces of PrPC and PrPSc identifies this flexible region as a component of the conformational rearrangement that is an essential feature of prion disease.


    Organizational Affiliation

    Department of Neurology, University of California, San Francisco, CA 94143-0518, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FAB ANTIBODY LIGHT CHAIN
L
219N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
FAB ANTIBODY HEAVY CHAIN
H
217N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.171 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 98.900α = 90.00
b = 77.600β = 110.56
c = 70.600γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
AMoREphasing
CCP4data scaling
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-04-17
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-04
    Type: Refinement description