Solution structure of Magi3 a specific insect toxin from the spider Macrothele gigas

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 12 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report

This is version 1.4 of the entry. See complete history


Successful refolding and NMR structure of rMagi3: A disulfide-rich insecticidal spider toxin.

Titaux-Delgado, G.Carrillo, E.Mendoza, A.Mayorga-Flores, M.Escobedo-Gonzalez, F.C.Cano-Sanchez, P.Lopez-Vera, E.Corzo, G.Del Rio-Portilla, F.

(2018) Protein Sci 27: 692-701

  • DOI: https://doi.org/10.1002/pro.3363
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The need for molecules with high specificity against noxious insects leads the search towards spider venoms that have evolved highly selective toxins for insect preys. In this respect, spiders as a highly diversified group of almost exclusive insect predators appear to possess infinite potential for the discovery of novel insect-selective toxins. In 2003, a group of toxins was isolated from the spider Macrothele gigas and the amino acid sequence was reported. We obtained, by molecular biology techniques in a heterologous system, one of these toxins. Purification process was optimized by chromatographic methods to determine the three-dimensional structure by nuclear magnetic resonance in solution, and, finally, their biological activity was tested. rMagi3 resulted to be a specific insect toxin with no effect on mice.

  • Organizational Affiliation

    Departamento de Química de Biomacromoléculas, Instituto de Química, Universidad Nacional Autónoma de México, CU, Ciudad de México, 04510, México.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Mu-hexatoxin-Mg2a46Macrothele gigasMutation(s): 0 
Find proteins for P83559 (Macrothele gigas)
Explore P83559 
Go to UniProtKB:  P83559
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP83559
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 12 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Direccion General del Personal Academico, UNAMMexicoIN207516

Revision History  (Full details and data files)

  • Version 1.0: 2018-01-10
    Type: Initial release
  • Version 1.1: 2018-01-24
    Changes: Structure summary
  • Version 1.2: 2018-01-31
    Changes: Structure summary
  • Version 1.3: 2018-02-28
    Changes: Database references
  • Version 1.4: 2023-06-14
    Changes: Data collection, Database references, Derived calculations, Other