Crystal Structure of the Brca1 BRCT Domains in Complex with the Phosphorylated Interacting Region from Bach1 Helicase

Experimental Data Snapshot

  • Resolution: 1.85 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.206 

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Structure and mechanism of BRCA1 BRCT domain recognition of phosphorylated BACH1 with implications for cancer

Clapperton, J.A.Manke, I.A.Lowery, D.M.Ho, T.Haire, L.F.Yaffe, M.B.Smerdon, S.J.

(2004) Nat Struct Mol Biol 11: 512-518

  • DOI: https://doi.org/10.1038/nsmb775
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Germline mutations in the BRCA1 tumor suppressor gene often result in a significant increase in susceptibility to breast and ovarian cancers. Although the molecular basis of their effects remains largely obscure, many mutations are known to target the highly conserved C-terminal BRCT repeats that function as a phosphoserine/phosphothreonine-binding module. We report the X-ray crystal structure at a resolution of 1.85 A of the BRCA1 tandem BRCT domains in complex with a phosphorylated peptide representing the minimal interacting region of the DEAH-box helicase BACH1. The structure reveals the determinants of this novel class of BRCA1 binding events. We show that a subset of disease-linked mutations act through specific disruption of phospho-dependent BRCA1 interactions rather than through gross structural perturbation of the tandem BRCT domains.

  • Organizational Affiliation

    National Institute for Medical Research, Division of Protein Structure, The Ridgeway, Mill Hill, London NW7 1AA, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Breast cancer type 1 susceptibility protein214Homo sapiensMutation(s): 0 
Gene Names: BRCA1
UniProt & NIH Common Fund Data Resources
Find proteins for P38398 (Homo sapiens)
Explore P38398 
Go to UniProtKB:  P38398
PHAROS:  P38398
GTEx:  ENSG00000012048 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP38398
Sequence Annotations
  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
BRCA1 interacting protein C-terminal helicase 18Homo sapiensMutation(s): 1 
Gene Names: BRIP1
UniProt & NIH Common Fund Data Resources
Find proteins for Q9BX63 (Homo sapiens)
Explore Q9BX63 
Go to UniProtKB:  Q9BX63
GTEx:  ENSG00000136492 
Entity Groups  
UniProt GroupQ9BX63
Sequence Annotations
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
Query on SEP
Experimental Data & Validation

Experimental Data

  • Resolution: 1.85 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.206 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 65.837α = 90
b = 65.837β = 90
c = 93.075γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-05-11
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance