2YEN

Solution structure of the skeletal muscle and neuronal voltage gated sodium channel antagonist mu-conotoxin CnIIIC

• PDB DOI: https://doi.org/10.2210/pdb2YEN/pdb

• Classification: TOXIN
• Organism(s): Conus consors
• Mutation(s): Yes 


• Deposited: 2011-03-28 Released: 2012-02-08 
• Deposition Author(s): Favreau, P., Benoit, E., Hocking, H.G., Carlier, L., D'hoedt, D., Leipold, E., Markgraf, R., Schlumberger, S., Cordova, M.A., Gaertner, H., Paolini-Bertrand, M., Hartley, O., Tytgat, J., Heinemann, S.H., Bertrand, D., Boelens, R., Stocklin, R., Molgo, J.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 20 
• Selection Criteria: LEAST RESTRAINT VIOLATION 

Literature

A Novel Mu-Conopeptide, Cniiic, Exerts Potent and Preferential Inhibition of Na(V) 1.2/1.4 Channels and Blocks Neuronal Nicotinic Acetylcholine Receptors.

Favreau, P., Benoit, E., Hocking, H.G., Carlier, L., D'Hoedt, D., Leipold, E., Markgraf, R., Schlumberger, S., Cordova, M.A., Gaertner, H., Paolini-Bertrand, M., Hartley, O., Tytgat, J., Heinemann, S.H., Bertrand, D., Boelens, R., Stocklin, R., Molgo, J.

(2012) Br J Pharmacol 166: 1654

• PubMed: 22229737 
• DOI: https://doi.org/10.1111/j.1476-5381.2012.01837.x
• Primary Citation of Related Structures:  
  2YEN


• PubMed Abstract: 
  

  The µ-conopeptide family is defined by its ability to block voltage-gated sodium channels (VGSCs), a property that can be used for the development of myorelaxants and analgesics. We characterized the pharmacology of a new µ-conopeptide (µ-CnIIIC) on a range of preparations and molecular targets to assess its potential as a myorelaxant.

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Organizational Affiliation: 

Atheris Laboratories, Bernex-Geneva, Switzerland.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 2.39 kDa 
• Atom Count: 161 
• Modelled Residue Count: 23 
• Deposited Residue Count: 23 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Mu-conotoxin CnIIIC	A	23	Conus consors	Mutation(s): 1
UniProt
Find proteins for I1SB07 (Conus consors) Explore I1SB07  Go to UniProtKB:  I1SB07

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
PCA	A	L-PEPTIDE LINKING	C5 H7 N O3		GLN

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 20 
• Selection Criteria: LEAST RESTRAINT VIOLATION 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2012-02-08 
Deposition Author(s): Favreau, P., Benoit, E., Hocking, H.G., Carlier, L., D'hoedt, D., Leipold, E., Markgraf, R., Schlumberger, S., Cordova, M.A., Gaertner, H., Paolini-Bertrand, M., Hartley, O., Tytgat, J., Heinemann, S.H., Bertrand, D., Boelens, R., Stocklin, R., Molgo, J.

Revision History  

• Version 1.0: 2012-02-08
  Type: Initial release
  
• Version 1.1: 2012-07-04
  Changes: Other
• Version 2.0: 2019-05-22
  Changes: Data collection, Database references, Derived calculations, Non-polymer description, Other, Source and taxonomy, Structure summary
• Version 3.0: 2020-03-11
  Changes: Data collection, Other, Polymer sequence
• Version 3.1: 2023-06-14
  Changes: Database references, Other