2REL

SOLUTION STRUCTURE OF R-ELAFIN, A SPECIFIC INHIBITOR OF ELASTASE, NMR, 11 STRUCTURES


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 11 
  • Selection Criteria: NOE AND DIHEDRAL ANGLE VIOLATIONS, ENERGY 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Solution structure of R-elafin, a specific inhibitor of elastase.

Francart, C.Dauchez, M.Alix, A.J.Lippens, G.

(1997) J Mol Biol 268: 666-677

  • DOI: 10.1006/jmbi.1997.0983
  • Primary Citation of Related Structures:  
    2REL

  • PubMed Abstract: 
  • The solution structure of r-elafin, a specific elastase inhibitor, has been determined using NMR spectroscopy. Characterized by a flat core and a flexible N-terminal extremity, the three-dimensional structure is formed by a central twisted beta-hairpin accompanied by two external segments linked by the proteinase binding loop ...

    The solution structure of r-elafin, a specific elastase inhibitor, has been determined using NMR spectroscopy. Characterized by a flat core and a flexible N-terminal extremity, the three-dimensional structure is formed by a central twisted beta-hairpin accompanied by two external segments linked by the proteinase binding loop. A cluster of three disulfide bridges connects the external segments to the central beta-sheet and a single fourth disulfide bridge links the binding loop to the central beta-turn. The same spatial distribution of disulfide bridges can be observed in both domains of the secretory leukocyte protease inhibitor (SLPI), another elastase inhibitor. The structural homology between r-elafin and the C-terminal domain of SLPI confirms the former as a second member of the chelonianin family of proteinase inhibitors. Based on the homology between the two proteins and recent results obtained for elastase binding mutants of the bovine pancreatic trypsin inhibitor (BPTI), we define the segment 22 to 27 as the binding loop of elafin, with the scissile peptide bond between Ala24 and Met25. In our solution structures, this loop is extended and solvent-exposed, and exhibits a large degree of flexibility. This mobility, already observed for the binding loop in other protease inhibitors in solution, might be an important feature for the interaction with the corresponding protease.


    Related Citations: 
    • Synthesis and Structure-Activity Relationships of Elafin, an Elastase-Specific Inhibitor
      Tsunemi, M., Kato, H., Nishiuchi, Y., Kumagaye, S., Sakakibara, S.
      (1992) Biochem Biophys Res Commun 185: 967
    • Erratum. Elafin: An Elastase-Specific Inhibitor of Human Skin. Purification, Characterization, and Complete Amino Acid Sequence
      Wiedow, O., Schroder, J.M., Gregory, H., Young, J.A., Christophers, E.
      (1991) J Biol Chem 266: 3356
    • Elafin: An Elastase-Specific Inhibitor of Human Skin. Purification, Characterization, and Complete Amino Acid Sequence
      Wiedow, O., Schroder, J.M., Gregory, H., Young, J.A., Christophers, E.
      (1990) J Biol Chem 265: 14791

    Organizational Affiliation

    CNRS URA 1309, Institut Pasteur de Lille, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
R-ELAFINA57Homo sapiensMutation(s): 0 
Gene Names: PI3WAP3WFDC14
UniProt & NIH Common Fund Data Resources
Find proteins for P19957 (Homo sapiens)
Explore P19957 
Go to UniProtKB:  P19957
PHAROS:  P19957
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 11 
  • Selection Criteria: NOE AND DIHEDRAL ANGLE VIOLATIONS, ENERGY 
  • OLDERADO: 2REL Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1997-07-07
    Type: Initial release
  • Version 1.1: 2008-03-25
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-11-29
    Changes: Derived calculations, Other