5T4R | pdb_00005t4r

NMR solution structure of the Nav1.7 selective spider venom-derived peptide Pn3a

• PDB DOI: https://doi.org/10.2210/pdb5T4R/pdb
• BMRB: 30164

• Classification: TOXIN
• Organism(s): Theraphosidae
• Mutation(s): No 


• Deposited: 2016-08-30 Released: 2017-09-06 
• Deposition Author(s): Rosengren, K.J., Armstrong, D.A., Vetter, I.
• Funding Organization(s): Australian Research Council (ARC), National Health and Medical Research Council (NHMRC, Australia)

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 20 
• Selection Criteria: lowest energy and covalent geometry 

Literature

Pharmacological characterisation of the highly Na V 1.7 selective spider venom peptide Pn3a.

Deuis, J.R., Dekan, Z., Wingerd, J.S., Smith, J.J., Munasinghe, N.R., Bhola, R.F., Imlach, W.L., Herzig, V., Armstrong, D.A., Rosengren, K.J., Bosmans, F., Waxman, S.G., Dib-Hajj, S.D., Escoubas, P., Minett, M.S., Christie, M.J., King, G.F., Alewood, P.F., Lewis, R.J., Wood, J.N., Vetter, I.

(2017) Sci Rep 7: 40883-40883

• PubMed: 28106092 
• DOI: https://doi.org/10.1038/srep40883
• Primary Citation Related Structures: 
  5T4R


• PubMed Abstract: 
  

  Human genetic studies have implicated the voltage-gated sodium channel Na _V 1.7 as a therapeutic target for the treatment of pain. A novel peptide, μ-theraphotoxin-Pn3a, isolated from venom of the tarantula Pamphobeteus nigricolor, potently inhibits Na _V 1.7 (IC ₅₀ 0.9 nM) with at least 40-1000-fold selectivity over all other Na _V subtypes. Despite on-target activity in small-diameter dorsal root ganglia, spinal slices, and in a mouse model of pain induced by Na _V 1.7 activation, Pn3a alone displayed no analgesic activity in formalin-, carrageenan- or FCA-induced pain in rodents when administered systemically. A broad lack of analgesic activity was also found for the selective Na _V 1.7 inhibitors PF-04856264 and phlotoxin 1. However, when administered with subtherapeutic doses of opioids or the enkephalinase inhibitor thiorphan, these subtype-selective Na _V 1.7 inhibitors produced profound analgesia. Our results suggest that in these inflammatory models, acute administration of peripherally restricted Na _V 1.7 inhibitors can only produce analgesia when administered in combination with an opioid.

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Organizational Affiliation: 
• IMB Centre for Pain Research, Institute for Molecular Bioscience, 306 Carmody Rd (Building 80), The University of Queensland, St Lucia, Queensland, 4072, Australia.
Discipline of Pharmacology, School of Medical Sciences, The University of Sydney, Sydney, New South Wales, 2006, Australia.
School of Biomedical Sciences, The University of Queensland, St Lucia, Queensland, 4072, Australia.
Department of Physiology &Solomon H. Snyder Department of Neuroscience, Johns Hopkins University, School of Medicine, Baltimore, MD 21205, USA.
Department of Neurology and Center for Neuroscience and Regeneration Research, Yale University School of Medicine, New Haven, Connecticut 06510, Rehabilitation Research Center, Veterans Administration Connecticut Healthcare System, West Haven, Connecticut 06516, USA.
Venomtech, Sophie-Antipolis, 06560, Valbonne, France.
Molecular Nociception Group, Wolfson Institute for Biomedical Research, University College London, London WC1E 6BT, UK.
School of Pharmacy, The University of Queensland, Pharmacy Australia Centre of Excellence, 20 Cornwall St, Woolloongabba, Queensland, 4102, Australia.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 4.29 kDa 
• Atom Count: 293 
• Modeled Residue Count: 35 
• Deposited Residue Count: 35 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Mu-theraphotoxin-Pn3a	A	35	Theraphosidae	Mutation(s): 0
UniProt
Find proteins for P0DM12 (Pamphobeteus nigricolor) Explore P0DM12  Go to UniProtKB:  P0DM12

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 20 
• Selection Criteria: lowest energy and covalent geometry 

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2017-09-06 
Deposition Author(s): Rosengren, K.J., Armstrong, D.A., Vetter, I.

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Funding Organization	Location	Grant Number
Australian Research Council (ARC)	Australia	--
National Health and Medical Research Council (NHMRC, Australia)	Australia	--

Revision History  

• Version 1.0: 2017-09-06
  Type: Initial release
  
• Version 1.1: 2017-09-27
  Changes: Author supporting evidence
• Version 1.2: 2020-01-01
  Changes: Author supporting evidence, Data collection
• Version 1.3: 2021-02-10
  Changes: Database references
• Version 1.4: 2023-06-14
  Changes: Database references, Other
• Version 1.5: 2024-11-13
  Changes: Data collection, Database references, Structure summary