6BB4

Fab/epitope complex of mouse monoclonal antibody C5.2 targeting a phospho-tau epitope.

  • Classification: IMMUNE SYSTEM
  • Organism(s): Homo sapiens

  • Deposited: 2017-10-16 Released: 2018-05-02 
  • Deposition Author(s): Chukwu, J.E., Kong, X.-P.
  • Funding Organization(s): National Institutes of Health/National Institute of Neurological Disorders and Stroke; National Institute on Aging 

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.099 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.218 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Tau Antibody Structure Reveals a Molecular Switch Defining a Pathological Conformation of the Tau Protein.

Chukwu, J.E.Pedersen, J.T.Pedersen, L.O.Volbracht, C.Sigurdsson, E.M.Kong, X.P.

(2018) Sci Rep 8: 6209-6209

  • DOI: 10.1038/s41598-018-24276-4

  • PubMed Abstract: 
  • Tau antibodies have shown therapeutic potential for Alzheimer's disease and several are in clinical trials. As a microtubule-associated protein, tau relies on dynamic phosphorylation for its normal functions. In tauopathies, it becomes hyperphosphory ...

    Tau antibodies have shown therapeutic potential for Alzheimer's disease and several are in clinical trials. As a microtubule-associated protein, tau relies on dynamic phosphorylation for its normal functions. In tauopathies, it becomes hyperphosphorylated and aggregates into toxic assemblies, which collectively lead to neurodegeneration. Of the phospho-epitopes, the region around Ser396 has received particular attention because of its prominence and stability in tauopathies. Here we report the first structure of a monoclonal tau antibody in complex with the pathologically important phospho-Ser396 residue. Its binding region reveals tau residues Tyr394 to phospho-Ser396 stabilized in a β-strand conformation that is coordinated by a phospho-specific antigen binding site. These details highlight a molecular switch that defines this prominent conformation of tau and ways to target it. Overall, the structure of the antibody-antigen complex clarifies why certain phosphorylation sites in tau are more closely linked to neurodegeneration than others.


    Organizational Affiliation

    Neuroscience & Physiology, & Psychiatry, New York University School of Medicine, New York, NY, USA. einar.sigurdsson@nyumc.org.,Neurodegeneration, H. Lundbeck A/S, DK-2500, Valby, Denmark.,Departments of Biochemistry & Molecular Pharmacology, New York University School of Medicine, New York, NY, USA. xiangpeng.kong@med.nyu.edu.,Departments of Biochemistry & Molecular Pharmacology, New York University School of Medicine, New York, NY, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Mouse monoclonal antibody C5.2 Fab light chain
L, M, N
213N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Mouse monoclonal antibody C5.2 Fab heavy chain
H, I, J
220N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Microtubule-associated protein tau
P, Q, R
23Homo sapiensMutation(s): 0 
Gene Names: MAPT (MAPTL, MTBT1, TAU)
Find proteins for P10636 (Homo sapiens)
Go to Gene View: MAPT
Go to UniProtKB:  P10636
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
H, I, J
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
P, Q, R
L-PEPTIDE LINKINGC3 H8 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.099 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.218 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 161.156α = 90.00
b = 40.535β = 104.07
c = 228.064γ = 90.00
Software Package:
Software NamePurpose
XDSdata scaling
PHENIXrefinement
XDSdata reduction
PHASERphasing
Cootmodel building

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 Institute on AgingUnited StatesAG032611

Revision History 

  • Version 1.0: 2018-05-02
    Type: Initial release