5V7R

Cyrstal structure of anti-Tau antibody CBTAU-7.1 Fab


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.171 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Immunological memory to hyperphosphorylated tau in asymptomatic individuals.

Pascual, G.Wadia, J.S.Zhu, X.Keogh, E.Kukrer, B.van Ameijde, J.Inganas, H.Siregar, B.Perdok, G.Diefenbach, O.Nahar, T.Sprengers, I.Koldijk, M.H.der Linden, E.C.Peferoen, L.A.Zhang, H.Yu, W.Li, X.Wagner, M.Moreno, V.Kim, J.Costa, M.West, K.Fulton, Z.Chammas, L.Luckashenak, N.Fletcher, L.Holland, T.Arnold, C.Anthony Williamson, R.Hoozemans, J.J.Apetri, A.Bard, F.Wilson, I.A.Koudstaal, W.Goudsmit, J.

(2017) Acta Neuropathol. 133: 767-783

  • DOI: 10.1007/s00401-017-1705-y
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Several reports have described the presence of antibodies against Alzheimer's disease-associated hyperphosphorylated forms of tau in serum of healthy individuals. To characterize the specificities that can be found, we interrogated peripheral IgG+ me ...

    Several reports have described the presence of antibodies against Alzheimer's disease-associated hyperphosphorylated forms of tau in serum of healthy individuals. To characterize the specificities that can be found, we interrogated peripheral IgG+ memory B cells from asymptomatic blood donors for reactivity to a panel of phosphorylated tau peptides using a single-cell screening assay. Antibody sequences were recovered, cloned, and expressed as full-length IgGs. In total, 52 somatically mutated tau-binding antibodies were identified, corresponding to 35 unique clonal families. Forty-one of these antibodies recognize epitopes in the proline-rich and C-terminal domains, and binding of 26 of these antibodies is strictly phosphorylation dependent. Thirteen antibodies showed inhibitory activity in a P301S lysate seeded in vitro tau aggregation assay. Two such antibodies, CBTAU-7.1 and CBTAU-22.1, which bind to the proline-rich and C-terminal regions of tau, respectively, were characterized in more detail. CBTAU-7.1 recognizes an epitope that is similar to that of murine anti-PHF antibody AT8, but has different phospho requirements. Both CBTAU-7.1 and CBTAU-22.1 detect pathological tau deposits in post-mortem brain tissue. CBTAU-7.1 reveals a similar IHC distribution pattern as AT8, immunostaining (pre)tangles, threads, and neuritic plaques. CBTAU-22.1 shows selective detection of neurofibrillary changes by IHC. Taken together, these results suggest the presence of an ongoing antigen-driven immune response against tau in healthy individuals. The wide range of specificities to tau suggests that the human immune repertoire may contain antibodies that can serve as biomarkers or be exploited for therapy.


    Organizational Affiliation

    Janssen Prevention Center, Janssen Pharmaceutical Companies of Johnson & Johnson, 3210, Merryfield Row, San Diego, CA, 92121, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CBTAU-7.1 Fab light chain
L
215N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
CBTAU-7.1 Fab heavy chain
H
227N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.171 
  • Space Group: P 41
Unit Cell:
Length (Å)Angle (°)
a = 83.903α = 90.00
b = 83.903β = 90.00
c = 109.424γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
HKL-2000data reduction
PHENIXrefinement
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-04-12
    Type: Initial release
  • Version 1.1: 2017-04-26
    Type: Database references