1EHL

64M-2 ANTIBODY FAB COMPLEXED WITH D(5HT)(6-4)T


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.199 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

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: 711-723

  • DOI: 10.1006/jmbi.2000.3772
  • Primary Citation of Related Structures:  
    1EHL

  • PubMed Abstract: 
  • DNA photoproducts with (6-4) pyrimidine-pyrimidone adducts formed by ultraviolet radiation are implicated in mutagenesis and cancer, particularly skin cancer. The crystal structure of the Fab fragment of the murine 64M-2 antibody specific to DNA T(6-4)T photoproducts is determined as a complex with dT(6-4)T, a (6-4) pyrimidine-pyrimidone photodimer of dTpT, at 2 ...

    DNA photoproducts with (6-4) pyrimidine-pyrimidone adducts formed by ultraviolet radiation are implicated in mutagenesis and cancer, particularly skin cancer. The crystal structure of the Fab fragment of the murine 64M-2 antibody specific to DNA T(6-4)T photoproducts is determined as a complex with dT(6-4)T, a (6-4) pyrimidine-pyrimidone photodimer of dTpT, at 2.4 A resolution to a crystallographic R-factor of 0.199 and an R(free) value of 0.279. The 64M-2 Fab molecule is in an extended arrangement with an elbow angle of 174 degrees, and its five complementarity-determining regions, except L2, are involved in the ligand binding. The bound dT(6-4)T ligand adopting a ring structure with (6-4) linked 5' thymine-3' pyrimidone bases is fully accommodated in an antigen-binding pocket of about 15 Ax10 A. The 5'-thymine and 3'-pyrimidone bases are in half-chair and planar conformations, respectively, and are nearly perpendicular to each other. The 5'-thymine base is hydrogen-bonded to Arg95H and Ser96H, and is in van der Waals contact with Tyr100iH. The 3'-pyrimidone base is hydrogen-bonded to His35H, and is in contact with Trp33H. Three water molecules are located at the interface between the bases and the Fab residues. Hydrogen bonds involving these water molecules also contribute to Fab recognition of the dT(6-4)T bases. The sugar-phosphate backbone connecting the bases is surrounded by residues His27dL, Tyr32L, Ser92L, Trp33H, and Ser58H, but is not hydrogen-bonded to these residues.


    Related Citations: 
    • Simultaneous Establishment of Monoclonal Antibodies Specific for Either Cyclobutane Pyrimidine Dimer or (6-4)photoproduct from the Same Mouse Immunized with Ultraviolet-Irradiated DNA
      Mori, T., Nakane, M., Hattori, T., Matsunaga, T., Ihara, M., Nikaido, O.
      (1991) Photochem Photobiol 54: 225
    • Antibodies Specific for (6-4) DNA Photoproducts: Cloning, Antibody Modeling and Construction of a Single-Chain Fv Derivative
      Morioka, H., Miura, H., Kobayashi, H., Koizumi, T., Fujii, K., Asano, K., Matsunaga, T., Nikaido, O., Stewart, J.D., Ohtsuka, E.
      (1998) Biochim Biophys Acta 1385: 17

    Organizational Affiliation

    Graduate School of Pharmaceutical Sciences, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
ANTI-(6-4) PHOTOPRODUCT ANTIBODY 64M-2 FAB (LIGHT CHAIN)B [auth L]217Mus musculusMutation(s): 0 
Gene Names: Igkc
Find proteins for P01837 (Mus musculus)
Explore P01837 
Go to UniProtKB:  P01837
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
ANTI-(6-4) PHOTOPRODUCT ANTIBODY 64M-2 FAB (HEAVY CHAIN)C [auth H]219Mus musculusMutation(s): 0 
Gene Names: Ighg
Find proteins for P01863 (Mus musculus)
Explore P01863 
Go to UniProtKB:  P01863
Protein Feature View
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  • Reference Sequence
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  • Entity ID: 1
    MoleculeChainsLengthOrganismImage
    5'-(D(5HT)P*(6-4)T)-3'A2N/A
    Experimental Data & Validation

    Experimental Data

    • Method: X-RAY DIFFRACTION
    • Resolution: 2.40 Å
    • R-Value Free: 0.279 
    • R-Value Work: 0.192 
    • R-Value Observed: 0.199 
    • Space Group: C 1 2 1
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 144.5α = 90
    b = 48.062β = 104.69
    c = 77.939γ = 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  (Full details and data files)

    • Version 1.0: 2001-02-21
      Type: Initial release
    • Version 1.1: 2008-04-27
      Changes: Version format compliance
    • Version 1.2: 2011-07-13
      Changes: Version format compliance