6GK7

Crystal structure of anti-tau antibody dmCBTAU-27.1, double mutant (S31Y, T100I) of CBTAU-27.1, in complex with Tau peptide A8119B (residues 299-318)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.95 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.224 

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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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HUMAN FAB ANTIBODY FRAGMENT OF CBTAU-27.1(S31Y,T100I)A [auth L]216Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
HUMAN FAB ANTIBODY FRAGMENT OF CBTAU-27.1(S31Y,T100I)B [auth H]223Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
HUMAN TAU PEPTIDE A8119 RESIDUES 299-318C [auth A]11Homo sapiensMutation(s): 0 
Gene Names: MAPTMAPTLMTBT1TAU
UniProt & NIH Common Fund Data Resources
Find proteins for P10636 (Homo sapiens)
Explore P10636 
Go to UniProtKB:  P10636
PHAROS:  P10636
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], E [auth H]CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.95 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.224 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 93.829α = 90
b = 60.524β = 104.37
c = 91.048γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling
REFMACrefinement

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