Biological Assembly 1  

 3D View: Structure

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 26104.85 
• Atom Count: 1522 
• Residue Count: 229 
• Unique protein chains: 1

1L0B

Crystal Structure of rat Brca1 tandem-BRCT region

• DOI: 10.2210/pdb1L0B/pdb

• Classification: UNKNOWN FUNCTION
• Organism(s): Rattus norvegicus
• Expression System: Escherichia coli BL21(DE3)


• Deposited: 2002-02-08 Released: 2002-03-20 
• Deposition Author(s): Joo, W.S., Jeffrey, P.D., Cantor, S.B., Finnin, M.S., Livingston, D.M., Pavletich, N.P.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.3 Å

Literature

Structure of the 53BP1 BRCT region bound to p53 and its comparison to the Brca1 BRCT structure.

Joo, W.S., Jeffrey, P.D., Cantor, S.B., Finnin, M.S., Livingston, D.M., Pavletich, N.P.

(2002) Genes Dev. 16: 583-593

• PubMed: 11877378 
• DOI: 10.1101/gad.959202
• Primary Citation of Related Structures:  
  1KZY


• PubMed Abstract: 
  

Brca1 C-terminal (BRCT) domains are a common protein-protein interaction motif in proteins involved in the DNA damage response and DNA repair. The DNA-damage response protein 53BP1 has two BRCT domains that bind to the DNA-binding domain of p53. The 53BP1 tandem-BRCT region is homologous to the tandem-BRCT region of Brca1, which is involved in double-strand break repair and homologous recombination and which binds BACH1, a member of the DEAH helicase family. Here we report the structures of a human 53BP1-p53 complex and of the rat Brca1 BRCT repeats. The 53BP1-p53 structure shows that the two BRCT repeats are arranged tandemly and pack extensively through an interface that also involves the inter-repeat linker. The first BRCT repeat and the linker together bind p53 on a region that overlaps with the DNA-binding surface of p53 and involves p53 residues that are mutated in cancer and are important for DNA binding. Comparison with the structure of the tandem-BRCT region of Brca1 shows a remarkable conservation of the repeat arrangement and of the inter-BRCT repeat interface. Analysis of human BRCA1 tumor-derived mutations and conservation identifies a potential protein-binding site that we show through mutagenesis is involved in BACH1 binding. The BACH1-binding region of Brca1 consists of a unique insertion in the first BRCT repeat and the inter-repeat linker and is analogous to the region of 53BP1 that binds p53.

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Organizational Affiliation: 

Cellular Biochemistry and Biophysics Program, Memorial Sloan-Kettering Cancer Center, New York, New York 10021, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
BRCA1	A	229	Rattus norvegicus	Mutation(s): 0  Gene Names: Brca1 EC: 2.3.2.27
Find proteins for O54952 (Rattus norvegicus) Go to UniProtKB:  O54952

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.3 Å
• Space Group: C 1 2 1

Unit Cell:

Length (Å)	Angle (°)
a = 84.512	α = 90.00
b = 58.722	β = 111.28
c = 65.327	γ = 90.00

Software Package:

Software Name	Purpose
SCALEPACK	data scaling
MLPHARE	phasing
CNS	refinement
DENZO	data reduction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2002-02-08 
• Released Date: 2002-03-20 
• Deposition Author(s): Joo, W.S., Jeffrey, P.D., Cantor, S.B., Finnin, M.S., Livingston, D.M., Pavletich, N.P.

Revision History 

• Version 1.0: 2002-03-20
  Type: Initial release
• Version 1.1: 2008-04-28
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance