2C8A

Structure of the wild-type C3bot1 Exoenzyme (Nicotinamide-bound state, crystal form I)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.207 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural Basis for the Nad-Hydrolysis Mechanism and the Artt-Loop Plasticity of C3 Exoenzymes.

Menetrey, J.Flatau, G.Boquet, P.Menez, A.Stura, E.A.

(2008) Protein Sci 17: 878

  • DOI: 10.1110/ps.073398508
  • Primary Citation of Related Structures:  
    2C89, 2C8F, 2C8E, 2C8D, 2C8C, 2C8B, 2C8A

  • PubMed Abstract: 
  • C3-like exoenzymes are ADP-ribosyltransferases that specifically modify some Rho GTPase proteins, leading to their sequestration in the cytoplasm, and thus inhibiting their regulatory activity on the actin cytoskeleton. This modification process goes ...

    C3-like exoenzymes are ADP-ribosyltransferases that specifically modify some Rho GTPase proteins, leading to their sequestration in the cytoplasm, and thus inhibiting their regulatory activity on the actin cytoskeleton. This modification process goes through three sequential steps involving NAD-hydrolysis, Rho recognition, and binding, leading to Rho ADP-ribosylation. Independently, three distinct residues within the ARTT loop of the C3 exoenzymes are critical for each of these steps. Supporting the critical role of the ARTT loop, we have shown previously that it adopts a distinct conformation upon NAD binding. Here, we present seven wild-type and ARTT loop-mutant structures of C3 exoenzyme of Clostridium botulinum free and bound to its true substrate, NAD, and to its NAD-hydrolysis product, nicotinamide. Altogether, these structures expand our understanding of the conformational diversity of the C3 exoenzyme, mainly within the ARTT loop.


    Related Citations: 
    • Nad Binding Induces Conformational Changes in Rho Adp-Ribosylating Clostridium Botulinum C3 Exoenzyme.J
      Menetrey, J., Flatau, G., Stura, E.A., Charbonnier, J.B., Gas, F., Teulon, J.M., Ledu, M.H., Boquet, P., Menez, A.
      (2002) J Biol Chem 277: 30950

    Organizational Affiliation

    Institut Curie, Centre de Recherche, Paris F-75248, France. julie.Menetrey@curie.fr



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MONO-ADP-RIBOSYLTRANSFERASE C3ABCD211Clostridium botulinumMutation(s): 0 
EC: 2.4.2
Find proteins for Q7M0L1 (Clostridium botulinum)
Explore Q7M0L1 
Go to UniProtKB:  Q7M0L1
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NCA
Query on NCA

Download CCD File 
A, B, C, D
NICOTINAMIDE
C6 H6 N2 O
DFPAKSUCGFBDDF-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download CCD File 
A, B, C, D
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.207 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 105.741α = 90
b = 74.638β = 101.04
c = 118.962γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-02-27
    Type: Initial release
  • Version 1.1: 2011-06-02
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance