5ZIA

Crystal structure of human anti-tau antibody CBTAU-24.1 in complex with its phosphorylated tau peptide

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.202 

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This is version 1.2 of the entry. See complete history. 


Literature

Structural Basis for Recognition of a Unique Epitope by a Human Anti-tau Antibody.

Zhang, H., Zhu, X., Pascual, G., Wadia, J.S., Keogh, E., Hoozemans, J.J., Siregar, B., Inganas, H., Stoop, E.J.M., Goudsmit, J., Apetri, A., Koudstaal, W., Wilson, I.A.

(2018) Structure 26: 1626-1634.e4

  • DOI: 10.1016/j.str.2018.08.012
  • Primary Citation of Related Structures:  
    5ZIA

  • PubMed Abstract: 

    • Aggregation of the hyperphosphorylated protein tau into neurofibrillary tangles and neuropil threads is a hallmark of Alzheimer disease (AD). Identification and characterization of the epitopes recognized by anti-tau antibodies might shed light on the molecular mechanisms of AD pathogenesis ...

    Aggregation of the hyperphosphorylated protein tau into neurofibrillary tangles and neuropil threads is a hallmark of Alzheimer disease (AD). Identification and characterization of the epitopes recognized by anti-tau antibodies might shed light on the molecular mechanisms of AD pathogenesis. Here we report on the biochemical and structural characterization of a tau-specific monoclonal antibody CBTAU-24.1, which was isolated from the human memory B cell repertoire. Immunohistochemical staining with CBTAU-24.1 specifically detects pathological tau structures in AD brain samples. The crystal structure of CBTAU-24.1 Fab with a phosphorylated tau peptide revealed recognition of a unique epitope (Ser235-Leu243) in the tau proline-rich domain. Interestingly, the antibody can bind tau regardless of phosphorylation state of its epitope region and also recognizes both monomeric and paired helical filament tau irrespective of phosphorylation status. This human anti-tau antibody and its unique epitope may aid in development of diagnostics and/or therapeutic AD strategies.

    Organizational Affiliation: 

    Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA; Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA 92037, USA. Electronic address: wilson@scripps.edu.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Heavy chain of CBTAU-24.1 antibodyD [auth A], G [auth D], A [auth G], J [auth H], M [auth K], P [auth O]226Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Light chain (kappa) of CBTAU-24.1 antibodyE [auth B], H [auth E], K [auth I], B [auth L], N [auth M], Q [auth P]220Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
phosphorylated tau peptideF [auth C], I [auth F], L [auth J], O [auth N], R [auth Q], C [auth R]9Homo 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
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP		C [auth R], F [auth C], I [auth F], L [auth J], O [auth N], R [auth Q]L-PEPTIDE LINKINGC3 H8 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.202 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 86.353α = 62.16
b = 107.811β = 71.02
c = 107.931γ = 90.77
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
NIGMSUnited StatesP41GM103393

Revision History  (Full details and data files)

  • Version 1.0: 2018-10-31
    Type: Initial release
  • Version 1.1: 2018-12-26
    Changes: Data collection, Database references
  • Version 1.2: 2019-12-25
    Changes: Derived calculations