6GGZ | pdb_00006ggz

NMR structure of the scorpion toxin AmmTx3

• PDB DOI: https://doi.org/10.2210/pdb6GGZ/pdb
• BMRB: 34268

• Classification: TOXIN
• Organism(s): Androctonus mauritanicus mauritanicus
• Mutation(s): No 


• Deposited: 2018-05-04 Released: 2019-01-30 
• Deposition Author(s): Landon, C., Meudal, H.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 250 
• Conformers Submitted: 10 
• Selection Criteria: structures with the lowest energy 

Literature

Synthesis by native chemical ligation and characterization of the scorpion toxin AmmTx3.

Zoukimian, C., Meudal, H., De Waard, S., Ouares, K.A., Nicolas, S., Canepari, M., Beroud, R., Landon, C., De Waard, M., Boturyn, D.

(2019) Bioorg Med Chem 27: 247-253

• PubMed: 30529150 
• DOI: https://doi.org/10.1016/j.bmc.2018.12.009
• Primary Citation Related Structures: 
  6GGZ


• PubMed Abstract: 
  

  The scorpion toxin AmmTx3 is a specific blocker of K _v 4 channels. It was shown to have interesting potential for neurological disorders. In this study, we report the first chemical synthesis of AmmTx3 by using the native chemical ligation strategy and validate its biological activity. We determined its 3D structure by nuclear magnetic resonance spectroscopy, and pointed out that AmmTx3 possesses the well-known CSαβ structural motif, which is found in a large number of scorpion toxins. Overall, this study establishes an easy synthetic access to biologically active AmmTx3 toxin.

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Organizational Affiliation: 
• Department of Molecular Chemistry, Univ. Grenoble Alpes, CNRS, 570 rue de la chimie, CS 40700, Grenoble 38000, France; Smartox Biotechnology, 6 rue des platanes, Saint Egrève 38120, France.
Center for Molecular Biophysics, CNRS, rue Charles Sadron, CS 80054, Orléans 45071, France.
Institut du Thorax, INSERM, CNRS, Univ. Nantes, 8 quai Moncousu, BP 70721, Nantes 44007, France.
Laboratory for Interdisciplinary Physics, Univ. Grenoble Alpes, CNRS, 140 Avenue de la Physique, BP 87, Saint-Martin d'Hères 38402, France.
Smartox Biotechnology, 6 rue des platanes, Saint Egrève 38120, France.
Department of Molecular Chemistry, Univ. Grenoble Alpes, CNRS, 570 rue de la chimie, CS 40700, Grenoble 38000, France. Electronic address: [e-mail].

Biological Assembly 1  

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

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 3.83 kDa 
• Atom Count: 262 
• Modeled Residue Count: 37 
• Deposited Residue Count: 37 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Potassium channel toxin alpha-KTx 15.3	A [auth 1]	37	Androctonus mauritanicus mauritanicus	Mutation(s): 0
UniProt
Find proteins for P60208 (Androctonus mauritanicus mauritanicus) Explore P60208  Go to UniProtKB:  P60208

Small Molecules

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

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 250 
• Conformers Submitted: 10 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2019-01-30 
Deposition Author(s): Landon, C., Meudal, H.

Revision History  

• Version 1.0: 2019-01-30
  Type: Initial release
  
• Version 1.1: 2019-05-08
  Changes: Data collection
• Version 2.0: 2020-03-11
  Changes: Data collection, Polymer sequence
• Version 2.1: 2024-10-16
  Changes: Data collection, Database references, Structure summary