6SAA

M-TRTX-Preg1a (Poecilotheria regalis)


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 250 
  • Conformers Submitted: 10 
  • Selection Criteria: total energies and restraint violation statistics 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

A Venomics Approach Coupled to High-Throughput Toxin Production Strategies Identifies the First Venom-Derived Melanocortin Receptor Agonists.

Reynaud, S.Ciolek, J.Degueldre, M.Saez, N.J.Sequeira, A.F.Duhoo, Y.Bras, J.L.A.Meudal, H.Cabo Diez, M.Fernandez Pedrosa, V.Verdenaud, M.Boeri, J.Pereira Ramos, O.Ducancel, F.Vanden Driessche, M.Fourmy, R.Violette, A.Upert, G.Mourier, G.Beck-Sickinger, A.G.Morl, K.Landon, C.Fontes, C.M.G.A.Minambres Herraiz, R.Rodriguez de la Vega, R.C.Peigneur, S.Tytgat, J.Quinton, L.De Pauw, E.Vincentelli, R.Servent, D.Gilles, N.

(2020) J Med Chem 63: 8250-8264

  • DOI: 10.1021/acs.jmedchem.0c00485
  • Primary Citation of Related Structures:  
    6SAA, 6SAB

  • PubMed Abstract: 
  • Animal venoms are rich in hundreds of toxins with extraordinary biological activities. Their exploitation is difficult due to their complexity and the small quantities of venom available from most venomous species. We developed a Venomics approach combining transcriptomic and proteomic characterization of 191 species and identified 20,206 venom toxin sequences ...

    Animal venoms are rich in hundreds of toxins with extraordinary biological activities. Their exploitation is difficult due to their complexity and the small quantities of venom available from most venomous species. We developed a Venomics approach combining transcriptomic and proteomic characterization of 191 species and identified 20,206 venom toxin sequences. Two complementary production strategies based on solid-phase synthesis and recombinant expression in Escherichia coli generated a physical bank of 3597 toxins. Screened on hMC4R, this bank gave an incredible hit rate of 8%. Here, we focus on two novel toxins: N-TRTX-Preg1a, exhibiting an inhibitory cystine knot (ICK) motif, and N-BUTX-Ptr1a, a short scorpion-CSαβ structure. Neither N-TRTX-Preg1a nor N-BUTX-Ptr1a affects ion channels, the known targets of their toxin scaffolds, but binds to four melanocortin receptors with low micromolar affinities and activates the hMC1R/Gs pathway. Phylogenetically, these two toxins form new groups within their respective families and represent novel hMC1R agonists, structurally unrelated to the natural agonists.


    Organizational Affiliation

    Université Paris Saclay, CEA, Département Médicaments et Technologies pour la Santé, SIMoS, Gif-sur-Yvette 91191 France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
U1-theraphotoxin-Pf3A28Poecilotheria formosaMutation(s): 0 
UniProt
Find proteins for A0A1V0FWW5 (Poecilotheria formosa)
Explore A0A1V0FWW5 
Go to UniProtKB:  A0A1V0FWW5
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 250 
  • Conformers Submitted: 10 
  • Selection Criteria: total energies and restraint violation statistics 
  • OLDERADO: 6SAA Olderado

Structure Validation

View Full Validation Report




Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
European CommissionFranceVenomix

Revision History  (Full details and data files)

  • Version 1.0: 2020-07-22
    Type: Initial release
  • Version 1.1: 2020-08-26
    Changes: Database references