1C6W

MAUROCALCIN FROM SCORPIO MAURUS


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 25 
  • Conformers Submitted: 25 
  • Selection Criteria: TARGET FUNCTION, VIOLATIONS, GEOMETRY 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

A new fold in the scorpion toxin family, associated with an activity on a ryanodine-sensitive calcium channel.

Mosbah, A.Kharrat, R.Fajloun, Z.Renisio, J.G.Blanc, E.Sabatier, J.M.El Ayeb, M.Darbon, H.

(2000) Proteins 40: 436-442

  • DOI: 10.1002/1097-0134(20000815)40:3<436::aid-prot90>3.0.co;2-9
  • Primary Citation of Related Structures:  
    1C6W

  • PubMed Abstract: 
  • We determined the structure in solution by (1)H two-dimensional NMR of Maurocalcine from the venom of Scorpio maurus. This toxin has been demonstrated to be a potent effector of ryanodyne-sensitive calcium channel from skeletal muscles. This is the first description of a scorpion toxin which folds following the Inhibitor Cystine Knot fold (ICK) already described for numerous toxic and inhibitory peptides, as well as for various protease inhibitors ...

    We determined the structure in solution by (1)H two-dimensional NMR of Maurocalcine from the venom of Scorpio maurus. This toxin has been demonstrated to be a potent effector of ryanodyne-sensitive calcium channel from skeletal muscles. This is the first description of a scorpion toxin which folds following the Inhibitor Cystine Knot fold (ICK) already described for numerous toxic and inhibitory peptides, as well as for various protease inhibitors. Its three dimensional structure consists of a compact disulfide-bonded core from which emerge loops and the N-terminus. A double-stranded antiparallel beta-sheet comprises residues 20-23 and 30-33. A third extended strand (residues 9-11) is perpendicular to the beta-sheet. Maurocalcine structure mimics the activating segment of the dihydropyridine receptor II-III loop and is therefore potentially useful for dihydropyridine receptor/ryanodine receptor interaction studies. Proteins 2000;40:436-442.


    Organizational Affiliation

    AFMB, Marseille, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MAUROCALCINA33N/AMutation(s): 0 
UniProt
Find proteins for P60254 (Scorpio palmatus)
Explore P60254 
Go to UniProtKB:  P60254
Entity Groups  
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UniProt GroupP60254
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 25 
  • Conformers Submitted: 25 
  • Selection Criteria: TARGET FUNCTION, VIOLATIONS, GEOMETRY 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-09-06
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-02-16
    Changes: Database references, Derived calculations