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 

wwPDB Validation 3D Report Full Report


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

  • 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 biosynthe ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Breast cancer type 1 susceptibility protein
X, A, B, C, D, E, F, G
235Homo sapiensMutation(s): 0 
Gene Names: BRCA1 (RNF53)
EC: 2.3.2.27
Find proteins for P38398 (Homo sapiens)
Go to Gene View: BRCA1
Go to UniProtKB:  P38398
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Acetyl-CoA carboxylase 1
H, I, J, K, L, M, N, O
13Homo sapiensMutation(s): 0 
Gene Names: ACACA (ACAC, ACC1, ACCA)
EC: 6.4.1.2
Find proteins for Q13085 (Homo sapiens)
Go to Gene View: ACACA
Go to UniProtKB:  Q13085
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
H, I, J, K, L, M, N, O
L-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 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 83.330α = 90.00
b = 181.513β = 90.00
c = 194.643γ = 90.00
Software Package:
Software NamePurpose
SnBphasing
DENZOdata reduction
REFMACrefinement
PHASERphasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

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

Revision History 

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