JzTx-34 toxin peptide

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

  • Deposited: 2023-02-10 Released: 2023-07-26 
  • Deposition Author(s): Landon, C., Meudal, H.
  • Funding Organization(s): Centre National de la Recherche Scientifique (CNRS)

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 250 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report

This is version 1.0 of the entry. See complete history


Structure-function relationship of new peptides activating human Na v 1.1.

Lopez, L.De Waard, S.Meudal, H.Caumes, C.Khakh, K.Peigneur, S.Oliveira-Mendes, B.Lin, S.De Waele, J.Montnach, J.Cestele, S.Tessier, A.Johnson, J.P.Mantegazza, M.Tytgat, J.Cohen, C.Beroud, R.Bosmans, F.Landon, C.De Waard, M.

(2023) Biomed Pharmacother 165: 115173-115173

  • DOI: https://doi.org/10.1016/j.biopha.2023.115173
  • Primary Citation of Related Structures:  
    8CIQ, 8CJP, 8CJQ, 8CJR, 8CJS, 8CJT

  • PubMed Abstract: 

    Na v 1.1 is an important pharmacological target as this voltage-gated sodium channel is involved in neurological and cardiac syndromes. Channel activators are actively sought to try to compensate for haploinsufficiency in several of these pathologies. Herein we used a natural source of new peptide compounds active on ion channels and screened for drugs capable to inhibit channel inactivation as a way to compensate for decreased channel function. We discovered that JzTx-34 is highly active on Na v 1.1 and subsequently performed a full structure-activity relationship investigation to identify its pharmacophore. These experiments will help interpret the mechanism of action of this and formerly identified peptides as well as the future identification of new peptides. We also reveal structural determinants that make natural ICK peptides active against Na v 1.1 challenging to synthesize. Altogether, the knowledge gained by this study will help facilitate the discovery and development of new compounds active on this critical ion channel target.

  • Organizational Affiliation

    Nantes Université, CNRS, INSERM, l'institut du thorax, F-44000 Nantes, France; Smartox Biotechnology, Saint-Egrève, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Mu-theraphotoxin-Cg1a35ChilobrachysMutation(s): 0 
Find proteins for B1P1F7 (Chilobrachys guangxiensis)
Explore B1P1F7 
Go to UniProtKB:  B1P1F7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupB1P1F7
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 250 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Centre National de la Recherche Scientifique (CNRS)France--

Revision History  (Full details and data files)

  • Version 1.0: 2023-07-26
    Type: Initial release