1BX8

HIRUSTASIN FROM HIRUDO MEDICINALIS AT 1.4 ANGSTROMS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.207 

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 Fold.Des. 7: 55-63

  • Primary Citation of Related Structures:  

  • 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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HIRUSTASIN
A
55Hirudo medicinalisMutation(s): 0 
Find proteins for P80302 (Hirudo medicinalis)
Go to UniProtKB:  P80302
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.207 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 37.713α = 90.00
b = 37.713β = 90.00
c = 67.812γ = 90.00
Software Package:
Software NamePurpose
SHELXmodel building
SHELXphasing
MARXDSdata collection
MARSCALEdata reduction
SHELXrefinement
MARXDSdata reduction
MARSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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