3GA0

CtBP1/BARS Gly172->Glu mutant structure: impairing NAD(H) binding and dimerization

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.40 Å
  • R-Value Free: 0.334 
  • R-Value Work: 0.262 
  • R-Value Observed: 0.270 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history. 


Literature

CtBP1/BARS Gly172-->Glu mutant structure: impairing NAD(H)-binding and dimerization

Nardini, M., Valente, C., Ricagno, S., Luini, A., Corda, D., Bolognesi, M.

(2009) Biochem Biophys Res Commun 381: 70-74

  • DOI: 10.1016/j.bbrc.2009.02.010
  • Primary Citation of Related Structures:  
    3GA0

  • PubMed Abstract: 

    • C-terminal binding proteins (CtBPs) are multi-functional proteins involved in nuclear transcriptional co-repression, Golgi membrane fission, and synaptic ribbon formation. Binding of NAD(H) to CtBPs promotes dimerization. CtBP dimers act as a scaffold fo ...

    C-terminal binding proteins (CtBPs) are multi-functional proteins involved in nuclear transcriptional co-repression, Golgi membrane fission, and synaptic ribbon formation. Binding of NAD(H) to CtBPs promotes dimerization. CtBP dimers act as a scaffold for multimeric protein complex formation, thus bridging transcriptional repressors and their targets in the nucleus. Based on size-exclusion chromatography experiments and on the crystal structure of the NAD(H)-free G172E CtBP mutant, we show here that absence of NAD(H) induces flexibility/backbone conformational changes at the dimerization interface and at the CtBP interdomain region. The results presented shed first light on the correlation between NAD(H)-binding and functional CtBP dimerization.

    Organizational Affiliation: 

    Department of Biomolecular Sciences and Biotechnology, CNR-INFM and CIMAINA, University of Milano, Via Celoria 26, I-20133 Milano, Italy.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
C-terminal-binding protein 1 A358Rattus norvegicusMutation(s): 1 
Gene Names: Ctbp1, Bars, Ctbp3
EC: 1.1.1
Find proteins for Q9Z2F5 (Rattus norvegicus)
Explore Q9Z2F5 
Go to UniProtKB:  Q9Z2F5
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FMT
Query on FMT
Download Ideal Coordinates CCD File 
A
FORMIC ACID
C H2 O2
BDAGIHXWWSANSR-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.40 Å
  • R-Value Free: 0.334 
  • R-Value Work: 0.262 
  • R-Value Observed: 0.270 
  • Space Group: P 64 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 89.197α = 90
b = 89.197β = 90
c = 160.259γ = 120
Software Package:
Software NamePurpose
MOLREPphasing
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-04-21
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance