1N0W image
Entry Detail
PDB ID:
1N0W
Keywords:
GENE REGULATION/ANTITUMOR PROTEIN
Title:
Crystal structure of a RAD51-BRCA2 BRC repeat complex
Biological Source:
Source Organism:
Homo sapiens,
Host Organism:
Escherichia coli BL21(DE3)
PDB Version:
Deposition Date:
2002-10-15
Release Date:
2002-11-27
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.70 Å
R-Value Free:
0.20
R-Value Work:
0.19
Space Group:
P 21 21 21
1N0W validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:DNA repair protein RAD51 homolog 1
Chain IDs:A
Chain Length:243
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:Q06609 Pfam ID:PF08423
Protein Blast
Polymer Type:polypeptide(L)
Description:Breast cancer type 2 susceptibility protein
Chain IDs:B
Chain Length:35
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:P51587 Pfam ID:PF00634
Polymer Type:polypeptide(L)
Description:ARTIFICIAL GLY-SER-MSE-GLY PEPTIDE
Chain IDs:D (auth: C)
Chain Length:4
Number of Molecules:1
Biological Source:
Polymer Type:polypeptide(L)
Description:peptide linker
Chain IDs:C (auth: L)
Chain Length:14
Number of Molecules:1
Biological Source:
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
MSE A MET SELENOMETHIONINE
Ligand Molecules
CL
EDO
MG
Primary Citation
Insights into DNA recombination from the structure of a RAD51-BRCA2 complex
Nature 420 287 293 (2002)
PMID: 12442171 DOI: 10.1038/nature01230

Abstact

The breast cancer susceptibility protein BRCA2 controls the function of RAD51, a recombinase enzyme, in pathways for DNA repair by homologous recombination. We report here the structure of a complex between an evolutionarily conserved sequence in BRCA2 (the BRC repeat) and the RecA-homology domain of RAD51. The BRC repeat mimics a motif in RAD51 that serves as an interface for oligomerization between individual RAD51 monomers, thus enabling BRCA2 to control the assembly of the RAD51 nucleoprotein filament, which is essential for strand-pairing reactions during DNA recombination. The RAD51 oligomerization motif is highly conserved among RecA-like recombinases, highlighting a common evolutionary origin for the mechanism of nucleoprotein filament formation, mirrored in the BRC repeat. Cancer-associated mutations that affect the BRC repeat disrupt its predicted interaction with RAD51, yielding structural insight into mechanisms for cancer susceptibility.

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Disease

Primary Citation of related structures
1N0W