2K4U

Solution structure of the SCORPION TOXIN ADWX-1

• PDB DOI: https://doi.org/10.2210/pdb2K4U/pdb

• Classification: TOXIN
• Organism(s): Mesobuthus martensii
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2008-06-18 Released: 2008-12-09 
• Deposition Author(s): Yin, S.J., Jiang, L., Yi, H., Han, S., Yang, D.W., Liu, M.L., Liu, H., Cao, Z.J., Wu, Y.L., Li, W.X.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 20 
• Selection Criteria: target function 

Literature

Different Residues in Channel Turret Determining the Selectivity of ADWX-1 Inhibitor Peptide between Kv1.1 and Kv1.3 Channels

Yin, S.J., Jiang, L., Yi, H., Han, S., Yang, D.W., Liu, M.L., Liu, H., Cao, Z.J., Wu, Y.L., Li, W.X.

(2008) J Proteome Res 7: 4890-4897

• PubMed: 18937510 
• DOI: https://doi.org/10.1021/pr800494a
• Primary Citation of Related Structures:  
  2K4U


• PubMed Abstract: 
  

  The low selectivity of Kv1 peptide inhibitors for specific isoforms makes them poor candidates for the development of theraputics. Using combined approaches, we showed that the Kv1 turret is the critical determinant for ADWX-1 peptide inhibitor selectivity of Kv1.3 over Kv1.1. Mutation of Kv1.1 turret residues to match the sequence of Kv1.3 lead to increased inhibition of Kv1.1 activity. These studies may lead to improvements in peptide inhibitor drug development.

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Organizational Affiliation: 

State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan 430072, PR China.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 4.09 kDa 
• Atom Count: 278 
• Modelled 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 3.6	A	37	Mesobuthus martensii	Mutation(s): 3
UniProt
Find proteins for Q9NII7 (Mesobuthus martensii) Explore Q9NII7  Go to UniProtKB:  Q9NII7

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 20 
• Selection Criteria: target function 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2008-12-09 
Deposition Author(s): Yin, S.J., Jiang, L., Yi, H., Han, S., Yang, D.W., Liu, M.L., Liu, H., Cao, Z.J., Wu, Y.L., Li, W.X.

Revision History  

• Version 1.0: 2008-12-09
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2021-11-10
  Changes: Database references, Derived calculations