6DC7

Apo Fab structure of mouse monoclonal antibody 8B2

  • Classification: IMMUNE SYSTEM

  • Deposited: 2018-05-04 Released: 2019-03-20 
  • Deposition Author(s): Chukwu, J.E., Kong, X.-P.
  • Funding Organization(s): National Institutes of Health/National Institute of Neurological Disorders and Stroke; National Institutes of Health/National Institute on Aging 

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.901 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.183 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural characterization of monoclonal antibodies targeting C-terminal Ser404region of phosphorylated tau protein.

Chukwu, J.E.Congdon, E.E.Sigurdsson, E.M.Kong, X.P.

(2019) MAbs 11: 477-488

  • DOI: 10.1080/19420862.2019.1574530
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Targeting tau with immunotherapies is currently the most common approach taken in clinical trials of patients with Alzheimer's disease. The most prominent pathological feature of tau is its hyperphosphorylation, which may cause the protein to aggrega ...

    Targeting tau with immunotherapies is currently the most common approach taken in clinical trials of patients with Alzheimer's disease. The most prominent pathological feature of tau is its hyperphosphorylation, which may cause the protein to aggregate into toxic assemblies that collectively lead to neurodegeneration. Of the phospho-epitopes, the region around Ser 396 /Ser 404 has received particular attention for therapeutic targeting because of its prominence and stability in diseased tissue. Herein, we present the antigen-binding fragment (Fab)/epitope complex structures of three different monoclonal antibodies (mAbs) that target the pSer 404 tau epitope region. Most notably, these structures reveal an antigen conformation similar to a previously described pathogenic tau epitope, pSer 422 , which was shown to have a β-strand structure that may be linked to the seeding core in tau oligomers. In addition, we have previously reported on the similarly ordered conformation observed in a pSer 396 epitope, which is in tandem with pSer 404 . Our data are the first Fab structures of mAbs bound to this epitope region of the tau protein and support the existence of proteopathic tau conformations stabilized by specific phosphorylation events that are viable targets for immune modulation.


    Organizational Affiliation

    a Department of Biochemistry & Molecular Pharmacology , New York University School of Medicine , New York , NY , USA.,b Departments of Neuroscience & Physiology, & Psychiatry , New York University School of Medicine , New York , NY , USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Fab light chain
L, M
218N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Fab heavy chain
H, I
217N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.901 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.183 
  • Space Group: P 2 21 21
Unit Cell:
Length (Å)Angle (°)
a = 53.440α = 90.00
b = 67.474β = 90.00
c = 240.163γ = 90.00
Software Package:
Software NamePurpose
XDSdata scaling
PHASERphasing
Cootmodel building
PHENIXrefinement
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Neurological Disorders and StrokeUnited StatesNS077239
National Institutes of Health/National Institute on AgingUnited StatesAG032611

Revision History 

  • Version 1.0: 2019-03-20
    Type: Initial release
  • Version 1.1: 2019-04-03
    Type: Data collection, Database references