3EI4

Structure of the hsDDB1-hsDDB2 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.3 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.254 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis of UV DNA-damage recognition by the DDB1-DDB2 complex.

Scrima, A.Konickova, R.Czyzewski, B.K.Kawasaki, Y.Jeffrey, P.D.Groisman, R.Nakatani, Y.Iwai, S.Pavletich, N.P.Thoma, N.H.

(2008) Cell 135: 1213-1223

  • DOI: 10.1016/j.cell.2008.10.045
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Ultraviolet (UV) light-induced pyrimidine photodimers are repaired by the nucleotide excision repair pathway. Photolesions have biophysical parameters closely resembling undamaged DNA, impeding discovery through damage surveillance proteins. The DDB1 ...

    Ultraviolet (UV) light-induced pyrimidine photodimers are repaired by the nucleotide excision repair pathway. Photolesions have biophysical parameters closely resembling undamaged DNA, impeding discovery through damage surveillance proteins. The DDB1-DDB2 complex serves in the initial detection of UV lesions in vivo. Here we present the structures of the DDB1-DDB2 complex alone and bound to DNA containing either a 6-4 pyrimidine-pyrimidone photodimer (6-4PP) lesion or an abasic site. The structure shows that the lesion is held exclusively by the WD40 domain of DDB2. A DDB2 hairpin inserts into the minor groove, extrudes the photodimer into a binding pocket, and kinks the duplex by approximately 40 degrees. The tightly localized probing of the photolesions, combined with proofreading in the photodimer pocket, enables DDB2 to detect lesions refractory to detection by other damage surveillance proteins. The structure provides insights into damage recognition in chromatin and suggests a mechanism by which the DDB1-associated CUL4 ubiquitin ligase targets proteins surrounding the site of damage.


    Organizational Affiliation

    Friedrich Miescher Institute for Biomedical Research, Maulbeerstrasse 66, CH 4058 Basel, Switzerland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DNA damage-binding protein 1
A, C, E
1158Homo sapiensMutation(s): 0 
Gene Names: DDB1 (XAP1)
Find proteins for Q16531 (Homo sapiens)
Go to Gene View: DDB1
Go to UniProtKB:  Q16531
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
DNA damage-binding protein 2
B, D, F
436Homo sapiensMutation(s): 0 
Gene Names: DDB2
Find proteins for Q92466 (Homo sapiens)
Go to Gene View: DDB2
Go to UniProtKB:  Q92466
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.3 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.254 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 268.500α = 90.00
b = 268.500β = 90.00
c = 471.000γ = 120.00
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data collection
HKL-2000data reduction
SCALEPACKdata scaling
SHARPphasing
PDB_EXTRACTdata extraction
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-01-20
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance
  • Version 1.2: 2017-10-25
    Type: Refinement description