1AG7

CONOTOXIN GS, NMR, 20 STRUCTURES

• PDB DOI: https://doi.org/10.2210/pdb1AG7/pdb

• Classification: NEUROTOXIN
• Organism(s): Conus geographus
• Mutation(s): Yes 


• Deposited: 1997-04-03 Released: 1998-04-08 
• Deposition Author(s): Hill, J.M., Alewood, P.F., Craik, D.J.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 20 
• Selection Criteria: LOWEST ENERGIES AND LEAST NUMBER OF RESTRAINT VIOLATIONS 

Literature

Solution structure of the sodium channel antagonist conotoxin GS: a new molecular caliper for probing sodium channel geometry.

Hill, J.M., Alewood, P.F., Craik, D.J.

(1997) Structure 5: 571-583

• PubMed: 9115446 
• DOI: https://doi.org/10.1016/s0969-2126(97)00212-8
• Primary Citation of Related Structures:  
  1AG7


• PubMed Abstract: 
  

  The venoms of Conus snails contain small, disulfide-rich inhibitors of voltage-dependent sodium channels. Conotoxin GS is a 34-residue polypeptide isolated from Conus geographus that interacts with the extracellular entrance of skeletal muscle sodium channels to prevent sodium ion conduction. Although conotoxin GS binds competitively with mu conotoxin GIIIA to the sodium channel surface, the two toxin types have little sequence identity with one another, and conotoxin GS has a four-loop structural framework rather than the characteristic three-loop mu-conotoxin framework. The structural study of conotoxin GS will form the basis for establishing a structure-activity relationship and understanding its interaction with the pore region of sodium channels.

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Organizational Affiliation: 

Centre for Drug Design and Development The University of Queensland, Brisbane, Queensland, 4072, Australia.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 3.63 kDa 
• Atom Count: 244 
• Modelled Residue Count: 34 
• Deposited Residue Count: 34 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CONOTOXIN GS	A	34	Conus geographus	Mutation(s): 3
UniProt
Find proteins for P15472 (Conus geographus) Explore P15472  Go to UniProtKB:  P15472

Small Molecules

Modified Residues  2 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
CGU	A	L-PEPTIDE LINKING	C6 H9 N O6		GLU
HYP	A	L-PEPTIDE LINKING	C5 H9 N O3		PRO

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 20 
• Selection Criteria: LOWEST ENERGIES AND LEAST NUMBER OF RESTRAINT VIOLATIONS 

Structure Validation

Entry History 

Deposition Data

• Released Date: 1998-04-08 
Deposition Author(s): Hill, J.M., Alewood, P.F., Craik, D.J.

Revision History  

• Version 1.0: 1998-04-08
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2022-02-16
  Changes: Database references, Derived calculations, Other