1MIU

Structure of a BRCA2-DSS1 complex

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.310 
  • R-Value Work: 0.256 
  • R-Value Observed: 0.260 

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


Literature

BRCA2 function in DNA binding and recombination from a BRCA2-DSS1-ssDNA structure

Yang, H., Jeffrey, P.D., Miller, J., Kinnucan, E., Sun, Y., Thoma, N.H., Zheng, N., Chen, P.L., Lee, W.H., Pavletich, N.P.

(2002) Science 297: 1837-1848

  • DOI: 10.1126/science.297.5588.1837
  • Primary Citation of Related Structures:  
    1IYJ, 1MJE, 1MIU

  • PubMed Abstract: 

    • Mutations in the BRCA2 (breast cancer susceptibility gene 2) tumor suppressor lead to chromosomal instability due to defects in the repair of double-strand DNA breaks (DSBs) by homologous recombination, but BRCA2's role in this process has been unclear. ...

    Mutations in the BRCA2 (breast cancer susceptibility gene 2) tumor suppressor lead to chromosomal instability due to defects in the repair of double-strand DNA breaks (DSBs) by homologous recombination, but BRCA2's role in this process has been unclear. Here, we present the 3.1 angstrom crystal structure of a approximately 90-kilodalton BRCA2 domain bound to DSS1, which reveals three oligonucleotide-binding (OB) folds and a helix-turn-helix (HTH) motif. We also (i) demonstrate that this BRCA2 domain binds single-stranded DNA, (ii) present its 3.5 angstrom structure bound to oligo(dT)9, (iii) provide data that implicate the HTH motif in dsDNA binding, and (iv) show that BRCA2 stimulates RAD51-mediated recombination in vitro. These findings establish that BRCA2 functions directly in homologous recombination and provide a structural and biochemical basis for understanding the loss of recombination-mediated DSB repair in BRCA2-associated cancers.

    Organizational Affiliation: 

    Department of Pharmacology, Sloan-Kettering Division, Joan and Sanford I. Weill Graduate School of Medical Sciences, Cornell University, New York, NY 10021, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Deleted in split hand/split foot protein 1 B70Homo sapiensMutation(s): 0 
Gene Names: SEM1, C7orf76, DSS1, SHFDG1, SHFM1
Find proteins for P60896 (Homo sapiens)
Explore P60896 
Go to UniProtKB:  P60896
NIH Common Fund Data Resources
PHAROS:  P60896
GTEx:  ENSG00000127922
Protein Feature View
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  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Breast Cancer type 2 susceptibility protein A738Mus musculusMutation(s): 0 
Gene Names: Brca2, Fancd1
Find proteins for P97929 (Mus musculus)
Explore P97929 
Go to UniProtKB:  P97929
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.310 
  • R-Value Work: 0.256 
  • R-Value Observed: 0.260 
  • Space Group: C 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 160.509α = 90
b = 228.271β = 90
c = 81.715γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
MLPHAREphasing
CNSrefinement

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-09-25
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance