1KEG

Antibody 64M-2 Fab complexed with dTT(6-4)TT


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.207 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Structure of the DNA (6-4) photoproduct dTT(6-4)TT in complex with the 64M-2 antibody Fab fragment implies increased antibody-binding affinity by the flanking nucleotides.

Yokoyama, H.Mizutani, R.Satow, Y.Sato, K.Komatsu, Y.Ohtsuka, E.Nikaido, O.

(2012) Acta Crystallogr D Biol Crystallogr 68: 232-238

  • DOI: 10.1107/S0907444912000327
  • Primary Citation of Related Structures:  
    1KEG

  • PubMed Abstract: 
  • Pyrimidine (6-4) pyrimidone DNA photoproducts produced by ultraviolet light are highly mutagenic and carcinogenic. The crystal structure of the dTT(6-4)TT photoproduct in complex with the Fab fragment of the antibody 64M-2 that is specific for (6-4) ...

    Pyrimidine (6-4) pyrimidone DNA photoproducts produced by ultraviolet light are highly mutagenic and carcinogenic. The crystal structure of the dTT(6-4)TT photoproduct in complex with the Fab fragment of the antibody 64M-2 that is specific for (6-4) photoproducts was determined at 2.4 Å resolution. The dT(6-4)T segment is fully accommodated in the concave binding pocket of the Fab, as observed in the complex of dT(6-4)T with the Fab. The pyrimidine and pyrimidone bases of the dT(6-4)T segment are positioned nearly perpendicularly to each other. The thymidine segments flanking both ends extend away from the dT(6-4)T segment. The 5'-side thymine base is parallel to the side chain of Tyr100iH of the antibody heavy chain and is also involved in electrostatic interactions with Asn30L, Tyr32L and Lys50L of the antibody light chain. The 5'-side and 3'-side phosphate groups exhibit electrostatic interactions with Asn28L and Ser58H, respectively. These interactions with the flanking nucleotides explain why longer oligonucleotides containing dT(6-4)T segments in the centre show higher antibody-binding affinities than the dT(6-4)T ligand.


    Related Citations: 
    • Crystal Structure of the 64M-2 Antibody Fab Fragment in Complex with a DNA dT(6-4)T Photoproduct formed by Ultraviolet Radiation
      Yokoyama, H., Mizutani, R., Satow, Y., Komatsu, Y., Ohtsuka, E., Nikaido, O.
      (2000) J Mol Biol 299: 711
    • Simultaneous Establishment of Monoclonal Antibodies Specific for Either Cyclobutane Pyrimidine Dimer or (6-4)photoproduct from the Same Mouse Immunized Ultraviolet-irradiated DNA
      Mori, T., Nakane, M., Hattori, T., Matsunaga, T., Ihara, M., Nikaido, O.
      (1991) Photochem Photobiol 54: 225

    Organizational Affiliation

    School of Pharmaceutical Sciences, University of Shizuoka, Japan. h-yokoya@u-shizuoka-ken.ac.jp



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Anti-(6-4) photoproduct antibody 64M-2 Fab (light chain)L216Mus musculusMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Anti-(6-4) photoproduct antibody 64M-2 Fab (heavy chain)H220Mus musculusMutation(s): 0 
Protein Feature View
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  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 1
    MoleculeChainsLengthOrganismImage
    5'-D(*TP*(64T)P*TP*T)-3'A4N/A
    Small Molecules
    Ligands 1 Unique
    IDChainsName / Formula / InChI Key2D Diagram3D Interactions
    NI
    Query on NI

    Download CCD File 
    L
    NICKEL (II) ION
    Ni
    VEQPNABPJHWNSG-UHFFFAOYSA-N
     Ligand Interaction
    Experimental Data & Validation

    Experimental Data

    • Method: X-RAY DIFFRACTION
    • Resolution: 2.40 Å
    • R-Value Free: 0.268 
    • R-Value Work: 0.201 
    • R-Value Observed: 0.207 
    • Space Group: P 21 21 21
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 73.567α = 90
    b = 137.274β = 90
    c = 49.615γ = 90
    Software Package:
    Software NamePurpose
    DENZOdata reduction
    SCALEPACKdata scaling
    X-PLORmodel building
    X-PLORrefinement
    X-PLORphasing

    Structure Validation

    View Full Validation Report



    Entry History 

    Deposition Data

    Revision History 

    • Version 1.0: 2002-11-15
      Type: Initial release
    • Version 1.1: 2008-04-27
      Changes: Version format compliance
    • Version 1.2: 2011-07-13
      Changes: Version format compliance
    • Version 1.3: 2012-02-29
      Changes: Database references
    • Version 1.4: 2012-03-28
      Changes: Database references