Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

Biological assembly 1 assigned by authors.

Biological Assembly 2  

 3D View: Structure | Electron Density | Ligand Interaction

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Protein Workshop | Ligand Explorer

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 39673.25 
• Atom Count: 2615 
• Residue Count: 358 
• Unique protein chains: 1

3GA0

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

• DOI: 10.2210/pdb3GA0/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Rattus norvegicus
• Expression System: Escherichia coli
• Mutation(s): 1 


• Deposited: 2009-02-16 Released: 2009-04-21 
• Deposition Author(s): Nardini, M., Valente, C., Ricagno, S., Luini, A., Corda, D., Bolognesi, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.4 Å
• R-Value Free: 0.334 
• R-Value Work: 0.262 

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

• PubMed: 19351597 
• DOI: 10.1016/j.bbrc.2009.02.010


• 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 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.

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Organizational Affiliation: 

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

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
C-terminal-binding protein 1	A	358	Rattus norvegicus	Mutation(s): 1  Gene Names: Ctbp1 (Bars, Ctbp3) EC: 1.1.1.-
Find proteins for Q9Z2F5 (Rattus norvegicus) Go to UniProtKB:  Q9Z2F5

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
FMT	A	FORMIC ACID C H2 O2 BDAGIHXWWSANSR-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.4 Å
• R-Value Free: 0.334 
• R-Value Work: 0.262 
• Space Group: P 6₄ 2 2

Unit Cell:

Length (Å)	Angle (°)
a = 89.197	α = 90.00
b = 89.197	β = 90.00
c = 160.259	γ = 120.00

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2009-02-16 
• Released Date: 2009-04-21 
• Deposition Author(s): Nardini, M., Valente, C., Ricagno, S., Luini, A., Corda, D., Bolognesi, M.

Revision History 

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