2XNH

Structure and function of the Rad9-binding region of the DNA damage checkpoint adaptor TopBP1

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.232 
  • R-Value Observed: 0.233 

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


Literature

Structure and Function of the Rad9-Binding Region of the DNA-Damage Checkpoint Adaptor Topbp1.

Rappas, M., Oliver, A.W., Pearl, L.H.

(2011) Nucleic Acids Res 39: 313

  • DOI: 10.1093/nar/gkq743
  • Primary Citation of Related Structures:  
    2XNH, 2XNK

  • PubMed Abstract: 

    • TopBP1 is a scaffold protein that coordinates activation of the DNA-damage-checkpoint response by coupling binding of the 9-1-1 checkpoint clamp at sites of ssDNA, to activation of the ATR-ATRIP checkpoint kinase complex. We have now determined the cryst ...

    TopBP1 is a scaffold protein that coordinates activation of the DNA-damage-checkpoint response by coupling binding of the 9-1-1 checkpoint clamp at sites of ssDNA, to activation of the ATR-ATRIP checkpoint kinase complex. We have now determined the crystal structure of the N-terminal region of human TopBP1, revealing an unexpected triple-BRCT domain structure. The arrangement of the BRCT domains differs significantly from previously described tandem BRCT domain structures, and presents two distinct sites for binding phosphopeptides in the second and third BRCT domains. We show that the site in the second but not third BRCT domain in the N-terminus of TopBP1, provides specific interaction with a phosphorylated motif at pSer387 in Rad9, which can be generated by CK2.

    Organizational Affiliation: 

    Cancer Research UK DNA Repair Enzyme Group, Section of Structural Biology, The Institute of Cancer Research, London, UK.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DNA TOPOISOMERASE 2-BINDING PROTEIN 1 A287Homo sapiensMutation(s): 0 
Gene Names: TOPBP1, KIAA0259
Find proteins for Q92547 (Homo sapiens)
Explore Q92547 
Go to UniProtKB:  Q92547
NIH Common Fund Data Resources
PHAROS:  Q92547
GTEx:  ENSG00000163781
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.232 
  • R-Value Observed: 0.233 
  • Space Group: P 21 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 115.77α = 90
b = 115.77β = 90
c = 115.77γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling
SHELXphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-09-01
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance