1HKU

CtBP/BARS: a dual-function protein involved in transcription corepression and Golgi membrane fission


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 
    0.281 (Depositor), 0.277 (DCC) 
  • R-Value Work: 
    0.222 (Depositor), 0.226 (DCC) 
  • R-Value Observed: 
    0.222 (Depositor) 

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Ligand Structure Quality Assessment 

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This is version 1.3 of the entry. See complete history


Literature

Ctbp/Bars: A Dual-Function Protein Involved in Transcription Co-Repression and Golgi Membrane Fission

Nardini, M.Spano, S.Cericola, C.Pesce, A.Massaro, A.Millo, E.Luini, A.Corda, D.Bolognesi, M.

(2003) EMBO J 22: 3122

  • DOI: https://doi.org/10.1093/emboj/cdg283
  • Primary Citation of Related Structures:  
    1HKU, 1HL3

  • PubMed Abstract: 

    C-terminal-binding protein/brefeldin A-ADP ribosylated substrate (CtBP/BARS) plays key roles in development and oncogenesis as a transcription co-repressor, and in intracellular traffic as a promoter of Golgi membrane fission. Co-repressor activity is regulated by NAD(H) binding to CtBP/BARS, while membrane fission is associated with its acyl-CoA-dependent acyltransferase activity. Here, we report the crystal structures of rat CtBP/BARS in a binary complex with NAD(H), and in a ternary complex with a PIDLSKK peptide mimicking the consensus motif (PXDLS) recognized in CtBP/BARS cellular partners. The structural data show CtBP/BARS in a NAD(H)-bound dimeric form; the peptide binding maps the recognition site for DNA-binding proteins and histone deacetylases to an N-terminal region of the protein. The crystal structure together with the site-directed mutagenesis data and binding experiments suggest a rationale for the molecular mechanisms underlying the two fundamental co-existing, but diverse, activities supported by CtBP/BARS in the nucleus and in Golgi membranes.


  • Organizational Affiliation

    Department of Physics-INFM, University of Genova, Via Dodecaneso 33, 16146 Genova, Italy.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
C-TERMINAL BINDING PROTEIN 3358Rattus norvegicusMutation(s): 0 
EC: 1.1.1
UniProt
Find proteins for Q9Z2F5 (Rattus norvegicus)
Explore Q9Z2F5 
Go to UniProtKB:  Q9Z2F5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9Z2F5
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free:  0.281 (Depositor), 0.277 (DCC) 
  • R-Value Work:  0.222 (Depositor), 0.226 (DCC) 
  • R-Value Observed: 0.222 (Depositor) 
Space Group: P 64 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 88.705α = 90
b = 88.705β = 90
c = 163.014γ = 120
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
SOLVEphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted NADClick on this verticalbar to view details

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-06-19
    Type: Initial release
  • Version 1.1: 2016-12-14
    Changes: Database references, Derived calculations, Non-polymer description, Other, Refinement description, Structure summary, Version format compliance
  • Version 1.2: 2016-12-21
    Changes: Database references
  • Version 1.3: 2024-11-20
    Changes: Data collection, Database references, Derived calculations, Other, Structure summary