1T29

Crystal structure of the BRCA1 BRCT repeats bound to a phosphorylated BACH1 peptide

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.252 
  • R-Value Observed: 0.252 

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This is version 1.2 of the entry. See complete history. 


Literature

Structure of the BRCT repeats of BRCA1 bound to a BACH1 phosphopeptide: implications for signaling.

Shiozaki, E.N., Gu, L., Yan, N., Shi, Y.

(2004) Mol Cell 14: 405-412

  • DOI: 10.1016/s1097-2765(04)00238-2
  • Primary Citation of Related Structures:  
    1T29

  • PubMed Abstract: 

    • The recognition of the phosphorylated BACH1 helicase by the BRCA1 C-terminal (BRCT) repeats is important to the tumor suppressor function of BRCA1. Here we report the crystal structure of the BRCT repeats of human BRCA1 bound to a phosphorylated BACH1 peptide at 2 ...

    The recognition of the phosphorylated BACH1 helicase by the BRCA1 C-terminal (BRCT) repeats is important to the tumor suppressor function of BRCA1. Here we report the crystal structure of the BRCT repeats of human BRCA1 bound to a phosphorylated BACH1 peptide at 2.3 A resolution. The phosphorylated serine 990 and phenylalanine 993 of BACH1 anchor the binding to BRCA1 through specific interactions with a surface cleft at the junction of the two BRCT repeats. This surface cleft is highly conserved in BRCA1 across species, suggesting an evolutionarily conserved function of phosphopeptide recognition. Importantly, conserved amino acids critical for BACH1 binding are frequently targeted for missense mutations in breast cancer. These mutations greatly diminish the ability of BRCA1 to interact with the phosphorylated BACH1 peptide. Additional structural analysis revealed significant implications for understanding the function of the BRCT family of proteins in DNA damage and repair signaling.

    Organizational Affiliation: 

    Department of Molecular Biology, Lewis Thomas Laboratory, Princeton University, Princeton, NJ 08544, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Breast cancer type 1 susceptibility proteinA214Homo sapiensMutation(s): 0 
Gene Names: BRCA1, RNF53
EC: 2.3.2.27
UniProt & NIH Common Fund Data Resources
Find proteins for P38398 (Homo sapiens)
Explore P38398 
Go to UniProtKB:  P38398
PHAROS:  P38398
GTEx:  ENSG00000012048
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
BACH1 phosphorylated peptideB14N/AMutation(s): 1 
UniProt & NIH Common Fund Data Resources
Find proteins for Q9BX63 (Homo sapiens)
Explore Q9BX63 
Go to UniProtKB:  Q9BX63
PHAROS:  Q9BX63
GTEx:  ENSG00000136492
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP		BL-PEPTIDE LINKINGC3 H8 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.252 
  • R-Value Observed: 0.252 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 63.177α = 90
b = 63.177β = 90
c = 105.532γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement

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