1KEG

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.201 

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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.,Sect.D 68: 232-238

  • DOI: 10.1107/S0907444912000327
  • Also Cited By: 3VW3

  • 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: Sequence  |  Structure


Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Anti-(6-4) photoproduct antibody 64M-2 Fab (light chain)
L
216N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Anti-(6-4) photoproduct antibody 64M-2 Fab (heavy chain)
H
220N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 1
MoleculeChainsLengthOrganism
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 SDF File 
Download CCD File 
L
NICKEL (II) ION
Ni
VEQPNABPJHWNSG-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
64T
Query on 64T
A
DNA LINKINGC10 H17 N2 O9 PDT
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.201 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 73.567α = 90.00
b = 137.274β = 90.00
c = 49.615γ = 90.00
Software Package:
Software NamePurpose
X-PLORphasing
X-PLORmodel building
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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