Impact of BRCA1 BRCT domain missense substitutions on phospho-peptide recognition: R1835P

Experimental Data Snapshot

  • Resolution: 2.80 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.233 
  • R-Value Observed: 0.236 

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Impact of BRCA1 BRCT Domain Missense Substitutions on Phosphopeptide Recognition.

Coquelle, N.Green, R.Glover, J.N.

(2011) Biochemistry 50: 4579-4589

  • DOI: https://doi.org/10.1021/bi2003795
  • Primary Citation of Related Structures:  
    3PXA, 3PXB, 3PXC, 3PXD, 3PXE

  • PubMed Abstract: 

    The BRCA1 BRCT domain binds pSer-x-x-Phe motifs in partner proteins to regulate the cellular response to DNA damage. Approximately 120 distinct missense variants have been identified in the BRCA1 BRCT through breast cancer screening, and several of these have been linked to an increased cancer risk. Here we probe the structures and peptide-binding activities of variants that affect the BRCA1 BRCT phosphopeptide-binding groove. The results obtained from the G1656D and T1700A variants illustrate the role of Ser1655 in pSer recognition. Mutations at Arg1699 (R1699W and R1699Q) significantly reduce peptide binding through loss of contacts to the main chain of the Phe(+3) residue and, in the case of R1699W, to a destabilization of the BRCT fold. The R1835P and E1836K variants do not dramatically reduce peptide binding, in spite of the fact that these mutations significantly alter the structure of the walls of the Phe(+3) pocket.

  • Organizational Affiliation

    Department of Biochemistry, School of Medicine, University of Alberta, Edmonton, AB, Canada.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Breast cancer type 1 susceptibility protein214Homo sapiensMutation(s): 1 
Gene Names: BRCA1RNF53
EC: 6.3.2
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
Experimental Data & Validation

Experimental Data

  • Resolution: 2.80 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.233 
  • R-Value Observed: 0.236 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 114.95α = 90
b = 114.95β = 90
c = 121.94γ = 120
Software Package:
Software NamePurpose
MxDCdata collection
XDSdata reduction
XSCALEdata scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-04-20
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-11-08
    Changes: Refinement description
  • Version 1.3: 2023-09-13
    Changes: Data collection, Database references, Derived calculations, Refinement description