1PTX

CRYSTAL STRUCTURE OF TOXIN II FROM THE SCORPION ANDROCTONUS AUSTRALIS HECTOR REFINED AT 1.3 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.30 Å
  • R-Value Work: 0.148 
  • R-Value Observed: 0.148 

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This is version 1.5 of the entry. See complete history


Literature

Crystal structure of toxin II from the scorpion Androctonus australis Hector refined at 1.3 A resolution.

Housset, D.Habersetzer-Rochat, C.Astier, J.P.Fontecilla-Camps, J.C.

(1994) J Mol Biol 238: 88-103

  • DOI: https://doi.org/10.1006/jmbi.1994.1270
  • Primary Citation of Related Structures:  
    1PTX

  • PubMed Abstract: 

    The crystal structure of toxin II from the scorpion Androctonus australis Hector has been refined at 1.3 A resolution using restrained least-squares methods. The final R-factor is 0.148 for the 13,619 reflections between 7.0 A and 1.3 A resolution with F > 2.5 sigma (F) and the bond length standard deviation from ideality is 0.017 A. Although minor changes have been introduced relative to the model previously refined at 1.8 A resolution, the use of higher-resolution data has allowed the modelling of some discrete disorder. Thus, three residues (including a disulphide bridge) have been built with multiple conformations. Occupancies were refined for the 106 solvent molecules included in the model, nine of them with explicit multiple sites. There is well-defined electron density for some of the protein hydrogen atoms in the final difference Fourier map. A detailed description of the toxin structure is presented, along with a comparison with the high-resolution structure of the related variant-3 scorpion toxin.


  • Organizational Affiliation

    Laboratoire de Cristallographie et Cristallogenèse des Protéines Institut de Biologie Structurale, Grenoble, France.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
SCORPION TOXIN II64Androctonus australisMutation(s): 0 
UniProt
Find proteins for P01484 (Androctonus australis)
Explore P01484 
Go to UniProtKB:  P01484
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01484
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.30 Å
  • R-Value Work: 0.148 
  • R-Value Observed: 0.148 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 45.94α = 90
b = 40.68β = 90
c = 29.93γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
PROLSQrefinement
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1995-01-26
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-07-17
    Changes: Advisory, Data collection, Other, Refinement description
  • Version 1.4: 2019-08-14
    Changes: Data collection, Refinement description
  • Version 1.5: 2024-10-16
    Changes: Advisory, Data collection, Database references, Structure summary