1BX8

HIRUSTASIN FROM HIRUDO MEDICINALIS AT 1.4 ANGSTROMS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.207 
  • R-Value Observed: 0.177 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The 1.2 A crystal structure of hirustasin reveals the intrinsic flexibility of a family of highly disulphide-bridged inhibitors.

Uson, I.Sheldrick, G.M.de La Fortelle, E.Bricogne, G.Di Marco, S.Priestle, J.P.Grutter, M.G.Mittl, P.R.

(1999) Structure 7: 55-63

  • DOI: 10.1016/s0969-2126(99)80009-4
  • Primary Citation of Related Structures:  
    1BX8, 1BX7

  • PubMed Abstract: 
  • Leech-derived inhibitors have a prominent role in the development of new antithrombotic drugs, because some of them are able to block the blood coagulation cascade. Hirustasin, a serine protease inhibitor from the leech Hirudo medicinalis, binds spec ...

    Leech-derived inhibitors have a prominent role in the development of new antithrombotic drugs, because some of them are able to block the blood coagulation cascade. Hirustasin, a serine protease inhibitor from the leech Hirudo medicinalis, binds specifically to tissue kallikrein and possesses structural similarity with antistasin, a potent factor Xa inhibitor from Haementeria officinalis. Although the 2.4 A structure of the hirustasin-kallikrein complex is known, classical methods such as molecular replacement were not successful in solving the structure of free hirustasin.


    Related Citations: 
    • A New Structural Class of Serine Protease Inhibitors Revealed by the Structure of the Hirustasin-Kallikrein Complex
      Mittl, P.R., Di Marco, S., Fendrich, G., Pohlig, G., Heim, J., Sommerhoff, C., Fritz, H., Priestle, J.P., Grutter, M.G.
      (1997) Structure 5: 253
    • Recombinant Hirustasin: Production in Yeast, Crystallization, and Interaction with Serine Proteases
      Di Marco, S., Fendrich, G., Knecht, R., Strauss, A., Pohlig, G., Heim, J., Priestle, J.P., Sommerhoff, C.P., Grutter, M.G.
      (1997) Protein Sci 6: 109

    Organizational Affiliation

    Institut für Anorganische Chemie der Universität, Tammannstrasse 4, D-37077 Göttingen, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HIRUSTASINA55Hirudo medicinalisMutation(s): 0 
Find proteins for P80302 (Hirudo medicinalis)
Explore P80302 
Go to UniProtKB:  P80302
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.207 
  • R-Value Observed: 0.177 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 37.713α = 90
b = 37.713β = 90
c = 67.812γ = 90
Software Package:
Software NamePurpose
MARXDSdata collection
MARSCALEdata reduction
SHELXmodel building
SHELXrefinement
MARXDSdata reduction
MARSCALEdata scaling
SHELXphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-04-27
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance