7LGL | pdb_00007lgl

Structural characterization of two b-KTx scorpion toxins. One of them blocks human KCNQ1 potassium channels

• PDB DOI: https://doi.org/10.2210/pdb7LGL/pdb
• BMRB: 30846

• Classification: TOXIN
• Organism(s): Tityus costatus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2021-01-20 Released: 2021-12-29 
• Deposition Author(s): del Rio-Portilla, F., Lopez-Giraldo, A.E.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

b-KTx scorpion toxin blocks human KCNQ1 potassium channels

del Rio-Portilla, F., Lopez-Giraldo, A.E.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 5.29 kDa 
• Atom Count: 366 
• Modeled Residue Count: 47 
• Deposited Residue Count: 47 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Potassium channel toxin TcoKIK	A	47	Tityus costatus	Mutation(s): 0
UniProt
Find proteins for Q0GY42 (Tityus costatus) Explore Q0GY42  Go to UniProtKB:  Q0GY42

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2021-12-29 
Deposition Author(s): del Rio-Portilla, F., Lopez-Giraldo, A.E.

Revision History  

• Version 1.0: 2021-12-29
  Type: Initial release
  
• Version 1.1: 2023-06-14
  Changes: Other
• Version 1.2: 2024-10-30
  Changes: Data collection, Database references, Structure summary