6GK8

Crystal structure of anti-tau antibody dmCBTAU-28.1, double mutant (S32R, E35K) of CBTAU-28.1, in complex with Tau peptide A7731 (residues 52-71)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.236 
  • R-Value Observed: 0.239 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history. 


Literature

A common antigenic motif recognized by naturally occurring human VH5-51/VL4-1 anti-tau antibodies with distinct functionalities.

Apetri, A., Crespo, R., Juraszek, J., Pascual, G., Janson, R., Zhu, X., Zhang, H., Keogh, E., Holland, T., Wadia, J., Verveen, H., Siregar, B., Mrosek, M., Taggenbrock, R., Ameijde, J., Inganas, H., van Winsen, M., Koldijk, M.H., Zuijdgeest, D., Borgers, M., Dockx, K., Stoop, E.J.M., Yu, W., Brinkman-van der Linden, E.C., Ummenthum, K., van Kolen, K., Mercken, M., Steinbacher, S., de Marco, D., Hoozemans, J.J., Wilson, I.A., Koudstaal, W., Goudsmit, J.

(2018) Acta Neuropathol Commun 6: 43-43

  • DOI: 10.1186/s40478-018-0543-z
  • Primary Citation of Related Structures:  
    5ZV3, 6DCV, 6DCW, 6GK7, 6GK8

  • PubMed Abstract: 

    • Misfolding and aggregation of tau protein are closely associated with the onset and progression of Alzheimer's Disease (AD). By interrogating IgG + memory B cells from asymptomatic donors with tau peptides, we have identified two somatically mutated V H 5-51/V L 4-1 antibodies ...

    Misfolding and aggregation of tau protein are closely associated with the onset and progression of Alzheimer's Disease (AD). By interrogating IgG + memory B cells from asymptomatic donors with tau peptides, we have identified two somatically mutated V H 5-51/V L 4-1 antibodies. One of these, CBTAU-27.1, binds to the aggregation motif in the R3 repeat domain and blocks the aggregation of tau into paired helical filaments (PHFs) by sequestering monomeric tau. The other, CBTAU-28.1, binds to the N-terminal insert region and inhibits the spreading of tau seeds and mediates the uptake of tau aggregates into microglia by binding PHFs. Crystal structures revealed that the combination of V H 5-51 and V L 4-1 recognizes a common Pro-X n -Lys motif driven by germline-encoded hotspot interactions while the specificity and thereby functionality of the antibodies are defined by the CDR3 regions. Affinity improvement led to improvement in functionality, identifying their epitopes as new targets for therapy and prevention of AD.

    Organizational Affiliation: 

    Department of Neurology, Amsterdam Neuroscience, Academic Medical Center, Meidreefberg 9, 1105, AZ, Amsterdam, the Netherlands.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HUMAN FAB ANTIBODY FRAGMENT OF CBTAU-28.1(S32R;E35K)A [auth H]224Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
HUMAN FAB ANTIBODY FRAGMENT OF CBTAU-28.1(S32R;E35K)B [auth L]220Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
TAU PEPTIDE A7731 (RESIDUES 52-71)C [auth I]20Homo sapiensMutation(s): 0 
Gene Names: MAPT, MAPTL, MTBT1, TAU
UniProt & NIH Common Fund Data Resources
Find proteins for P10636 (Homo sapiens)
Explore P10636 
Go to UniProtKB:  P10636
PHAROS:  P10636
GTEx:  ENSG00000186868
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL
Download Ideal Coordinates CCD File 
 D [auth H]CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.236 
  • R-Value Observed: 0.239 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.313α = 90
b = 63.601β = 90
c = 141.895γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling
REFMACrefinement
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-06-13
    Type: Initial release