1MJE

STRUCTURE OF A BRCA2-DSS1-SSDNA COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.245 

wwPDB Validation   3D Report Full Report


This is version 1.3 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: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Deleted in split hand/split foot protein 1 B70Homo sapiensMutation(s): 0 
Gene Names: SEM1C7orf76DSS1SHFDG1SHFM1
Find proteins for P60896 (Homo sapiens)
Explore P60896 
Go to UniProtKB:  P60896
NIH Common Fund Data Resources
PHAROS:  P60896
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
breast cancer 2 A649Mus musculusMutation(s): 0 
Gene Names: Brca2
Find proteins for P97929 (Mus musculus)
Explore P97929 
Go to UniProtKB:  P97929
Protein Feature View
Expand
  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 1
    MoleculeChainsLengthOrganismImage
    5'-D(P*TP*TP*TP*TP*TP*T)-3'C6N/A
    Experimental Data & Validation

    Experimental Data

    • Method: X-RAY DIFFRACTION
    • Resolution: 3.50 Å
    • R-Value Free: 0.278 
    • R-Value Work: 0.245 
    • Space Group: I 4 2 2
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 198.866α = 90
    b = 198.866β = 90
    c = 200.047γ = 90
    Software Package:
    Software NamePurpose
    DENZOdata reduction
    SCALEPACKdata scaling
    AMoREphasing
    CNSrefinement

    Structure Validation

    View Full Validation Report



    Entry History 

    Deposition Data

    Revision History 

    • Version 1.0: 2002-09-27
      Type: Initial release
    • Version 1.1: 2008-04-28
      Changes: Version format compliance
    • Version 1.2: 2011-07-13
      Changes: Version format compliance
    • Version 1.3: 2017-08-09
      Changes: Advisory, Refinement description, Source and taxonomy