3COJ

Crystal Structure of the BRCT Domains of Human BRCA1 in Complex with a Phosphorylated Peptide from Human Acetyl-CoA Carboxylase 1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.21 Å
  • R-Value Free: 0.307 
  • R-Value Work: 0.257 
  • R-Value Observed: 0.260 

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This is version 1.2 of the entry. See complete history


Literature

Structural evidence for direct interactions between the BRCT domains of human BRCA1 and a phospho-peptide from human ACC1

Shen, Y.Tong, L.

(2008) Biochemistry 47: 5767-5773

  • DOI: 10.1021/bi800314m
  • Primary Citation of Related Structures:  
    3COJ

  • PubMed Abstract: 
  • The tandem BRCA1 C-terminal (BRCT) domains are phospho-serine/threonine recognition modules essential for the function of BRCA1. Recent studies suggest that acetyl-CoA carboxylase 1 (ACC1), an enzyme with crucial roles in de novo fatty acid biosynthesis and lipogenesis and essential for cancer cell survival, may be a novel binding partner for BRCA1, through interactions with its BRCT domains ...

    The tandem BRCA1 C-terminal (BRCT) domains are phospho-serine/threonine recognition modules essential for the function of BRCA1. Recent studies suggest that acetyl-CoA carboxylase 1 (ACC1), an enzyme with crucial roles in de novo fatty acid biosynthesis and lipogenesis and essential for cancer cell survival, may be a novel binding partner for BRCA1, through interactions with its BRCT domains. We report here the crystal structure at 3.2 A resolution of human BRCA1 BRCT domains in complex with a phospho-peptide from human ACC1 (p-ACC1 peptide, with the sequence 1258-DSPPQ-pS-PTFPEAGH-1271), which provides molecular evidence for direct interactions between BRCA1 and ACC1. The p-ACC1 peptide is bound in an extended conformation, located in a groove between the tandem BRCT domains. There are recognizable and significant structural differences to the binding modes of two other phospho-peptides to these domains, from BACH1 and CtIP, even though they share a conserved pSer-Pro-(Thr/Val)-Phe motif. Our studies establish a framework for understanding the regulation of lipid biosynthesis by BRCA1 through its inhibition of ACC1 activity, which could be a novel tumor suppressor function of BRCA1.


    Organizational Affiliation

    Department of Biological Sciences, Columbia University, New York City, New York 10027, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Breast cancer type 1 susceptibility protein ABCDEFGX235Homo sapiensMutation(s): 0 
Gene Names: BRCA1RNF53
EC: 2.3.2.27
Find proteins for P38398 (Homo sapiens)
Explore P38398 
Go to UniProtKB:  P38398
NIH Common Fund Data Resources
PHAROS:  P38398
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Acetyl-CoA carboxylase 1 HIJKLMNO13synthetic constructMutation(s): 0 
EC: 6.4.1.2
Find proteins for Q13085 (Homo sapiens)
Explore Q13085 
Go to UniProtKB:  Q13085
NIH Common Fund Data Resources
PHAROS:  Q13085
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
H,I,J,K,L,M,N,OL-PEPTIDE LINKINGC3 H8 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.21 Å
  • R-Value Free: 0.307 
  • R-Value Work: 0.257 
  • R-Value Observed: 0.260 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 83.33α = 90
b = 181.513β = 90
c = 194.643γ = 90
Software Package:
Software NamePurpose
SnBphasing
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2008-03-28 
  • Released Date: 2008-05-27 
  • Deposition Author(s): Shen, Y., Tong, L.

Revision History  (Full details and data files)

  • Version 1.0: 2008-05-27
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2017-10-25
    Changes: Refinement description, Source and taxonomy