1MIU

Structure of a BRCA2-DSS1 complex

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.310 
  • R-Value Work: 0.256 

wwPDB Validation 3D Report Full Report


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:  

  • 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 uncle ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Deleted in split hand/split foot protein 1
B
70Homo sapiensMutation(s): 0 
Gene Names: SEM1 (C7orf76, DSS1, SHFDG1, SHFM1)
Find proteins for P60896 (Homo sapiens)
Go to Gene View: SEM1
Go to UniProtKB:  P60896
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Breast Cancer type 2 susceptibility protein
A
738Mus musculusMutation(s): 0 
Gene Names: Brca2 (Fancd1)
Find proteins for P97929 (Mus musculus)
Go to UniProtKB:  P97929
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HG
Query on HG
Download SDF File 
Download CCD File 
A
MERCURY (II) ION
Hg
BQPIGGFYSBELGY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.310 
  • R-Value Work: 0.256 
  • Space Group: C 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 160.509α = 90.00
b = 228.271β = 90.00
c = 81.715γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
SCALEPACKdata scaling
DENZOdata reduction
MLPHAREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

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