2NS3

Solution structure of ribbon BuIA

• PDB DOI: https://doi.org/10.2210/pdb2NS3/pdb

• Classification: TOXIN
• Organism(s): Conus bullatus
• Mutation(s): No 


• Deposited: 2006-11-03 Released: 2007-09-25 
• Deposition Author(s): Jin, A.H., Brandstaetter, H., Nevin, S.T., Tan, C.C., Clark, R.J., Adams, D.J., Alewood, P.F., Craik, D.J., Daly, N.L.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

Structure of alpha-conotoxin BuIA: influences of disulfide connectivity on structural dynamics

Jin, A.H., Brandstaetter, H., Nevin, S.T., Tan, C.C., Clark, R.J., Adams, D.J., Alewood, P.F., Craik, D.J., Daly, N.L.

(2007) BMC Struct Biol 7: 28-28

• PubMed: 17445276 
• DOI: https://doi.org/10.1186/1472-6807-7-28
• Primary Citation of Related Structures:  
  2NS3


• PubMed Abstract: 
  

  Alpha-conotoxins have exciting therapeutic potential based on their high selectivity and affinity for nicotinic acetylcholine receptors. The spacing between the cysteine residues in alpha-conotoxins is variable, leading to the classification of sub-families. BuIA is the only alpha-conotoxin containing a 4/4 cysteine spacing and thus it is of significant interest to examine the structure of this conotoxin.

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Organizational Affiliation: 

Institute for Molecular Bioscience, Australian Research Council Special Research Centre for Functional and Applied Genomics, The University of Queensland, Brisbane QLD, Australia. [e-mail]

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 1.31 kDa 
• Atom Count: 88 
• Modelled Residue Count: 14 
• Deposited Residue Count: 14 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Alpha-conotoxin BuIA	A	14	N/A	Mutation(s): 0
UniProt
Find proteins for P69657 (Conus bullatus) Explore P69657  Go to UniProtKB:  P69657

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2007-09-25 
Deposition Author(s): Jin, A.H., Brandstaetter, H., Nevin, S.T., Tan, C.C., Clark, R.J., Adams, D.J., Alewood, P.F., Craik, D.J., Daly, N.L.

Revision History  

• Version 1.0: 2007-09-25
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2022-03-16
  Changes: Data collection, Database references, Derived calculations
• Version 1.3: 2023-12-27
  Changes: Data collection