2N24 | pdb_00002n24

Solution NMR structure of Contryphan-Vc1

• PDB DOI: https://doi.org/10.2210/pdb2N24/pdb
• BMRB: 25585

• Classification: TOXIN
• Organism(s): Conus victoriae
• Mutation(s): No 
• Membrane Protein: Yes  OPM


• Deposited: 2015-04-27 Released: 2016-02-03 
• Deposition Author(s): Robinson, S.D., Chhabra, S., Norton, R.S.

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Experimental Data Snapshot

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

Literature

A Naturally Occurring Peptide with an Elementary Single Disulfide-Directed beta-Hairpin Fold.

Robinson, S.D., Chhabra, S., Belgi, A., Chittoor, B., Safavi-Hemami, H., Robinson, A.J., Papenfuss, A.T., Purcell, A.W., Norton, R.S.

(2016) Structure 24: 293-299

• PubMed: 26774129 
• DOI: https://doi.org/10.1016/j.str.2015.11.015
• Primary Citation Related Structures: 
  2N24


• PubMed Abstract: 
  

  Certain peptide folds, owing to a combination of intrinsic stability and resilience to amino acid substitutions, are particularly effective for the display of diverse functional groups. Such "privileged scaffolds" are valuable as starting points for the engineering of new bioactive molecules. We have identified a precursor peptide expressed in the venom gland of the marine snail Conus victoriae, which appears to belong to a hitherto undescribed class of molluscan neuropeptides. Mass spectrometry matching with the venom confirmed the complete mature peptide sequence as a 31-residue peptide with a single disulfide bond. Solution structure determination revealed a unique peptide fold that we have designated the single disulfide-directed β hairpin (SDH). The SDH fold is highly resistant to thermal denaturation and forms the core of several other multiple disulfide-containing peptide folds, including the inhibitor cystine knot. This elementary fold may offer a valuable starting point for the design and engineering of new bioactive peptides.

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Organizational Affiliation: 
• Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia.
School of Chemistry, Monash University, Clayton, VIC 3800, Australia.
Department of Biology, University of Utah, Salt Lake City, UT 84112, USA.
Bioinformatics Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia.
The Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, VIC 3800, Australia.
Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia. Electronic address: [e-mail].

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 3.56 kDa 
• Atom Count: 251 
• Modeled Residue Count: 31 
• Deposited Residue Count: 31 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
O2_contryphan_Vc1	A	31	Conus victoriae	Mutation(s): 0  Membrane Entity: Yes
UniProt
Find proteins for W4VSF6 (Conus victoriae) Explore W4VSF6  Go to UniProtKB:  W4VSF6

Small Molecules

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

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: 2016-02-03 
Deposition Author(s): Robinson, S.D., Chhabra, S., Norton, R.S.

Revision History  

• Version 1.0: 2016-02-03
  Type: Initial release
  
• Version 1.1: 2016-03-02
  Changes: Database references
• Version 2.0: 2019-12-25
  Changes: Data collection, Database references, Derived calculations, Polymer sequence
• Version 2.1: 2024-10-30
  Changes: Data collection, Database references, Structure summary