2N7F | pdb_00002n7f

NMR solution structure of muO-conotoxin MfVIA

• PDB DOI: https://doi.org/10.2210/pdb2N7F/pdb
• BMRB: 25804

• Classification: TOXIN
• Organism(s): synthetic construct
• Mutation(s): No 


• Deposited: 2015-09-09 Released: 2016-04-06 
• Deposition Author(s): Schroeder, C.I., Mobli, M.

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Experimental Data Snapshot

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

Literature

Development of a mu O-Conotoxin Analogue with Improved Lipid Membrane Interactions and Potency for the Analgesic Sodium Channel NaV1.8.

Deuis, J.R., Dekan, Z., Inserra, M.C., Lee, T.H., Aguilar, M.I., Craik, D.J., Lewis, R.J., Alewood, P.F., Mobli, M., Schroeder, C.I., Henriques, S.T., Vetter, I.

(2016) J Biological Chem 291: 11829-11842

• PubMed: 27026701 
• DOI: https://doi.org/10.1074/jbc.M116.721662
• Primary Citation Related Structures: 
  2N7F


• PubMed Abstract: 
  

  The μO-conotoxins MrVIA, MrVIB, and MfVIA inhibit the voltage-gated sodium channel NaV1.8, a well described target for the treatment of pain; however, little is known about the residues or structural elements that define this activity. In this study, we determined the three-dimensional structure of MfVIA, examined its membrane binding properties, performed alanine-scanning mutagenesis, and identified residues important for its activity at human NaV1.8. A second round of mutations resulted in (E5K,E8K)MfVIA, a double mutant with greater positive surface charge and greater affinity for lipid membranes compared with MfVIA. This analogue had increased potency at NaV1.8 and was analgesic in the mouse formalin assay.

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Organizational Affiliation: 
• From the Institute for Molecular Bioscience and School of Pharmacy, The University of Queensland, Woolloongabba, Queensland 4102, Australia, and.
From the Institute for Molecular Bioscience and.
Department of Biochemistry and Molecular Biology, Monash University, Wellington Road, Clayton, Victoria 3800, Australia.
Centre for Advanced Imaging, The University of Queensland, St. Lucia, Queensland 4072, Australia.
From the Institute for Molecular Bioscience and [e-mail].
From the Institute for Molecular Bioscience and [e-mail].
From the Institute for Molecular Bioscience and School of Pharmacy, The University of Queensland, Woolloongabba, Queensland 4102, Australia, and [e-mail].

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 3.66 kDa 
• Atom Count: 252 
• Modeled Residue Count: 32 
• Deposited Residue Count: 32 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
muO-conotoxin MfVIA	A	32	synthetic construct	Mutation(s): 0
UniProt
Find proteins for P0DM15 (Conus magnificus) Explore P0DM15  Go to UniProtKB:  P0DM15

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: 2016-04-06 
Deposition Author(s): Schroeder, C.I., Mobli, M.

Revision History  

• Version 1.0: 2016-04-06
  Type: Initial release
  
• Version 1.1: 2016-05-11
  Changes: Database references
• Version 1.2: 2016-07-27
  Changes: Database references
• Version 1.3: 2017-02-01
  Changes: Structure summary
• Version 1.4: 2023-06-14
  Changes: Data collection, Database references, Other
• Version 1.5: 2024-10-30
  Changes: Data collection, Database references, Structure summary