1ATT

CRYSTAL STRUCTURE OF CLEAVED BOVINE ANTITHROMBIN III AT 3.2 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Work: 0.212 
  • R-Value Observed: 0.212 

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This is version 1.2 of the entry. See complete history


Literature

Crystal structure of cleaved bovine antithrombin III at 3.2 A resolution.

Mourey, L.Samama, J.P.Delarue, M.Petitou, M.Choay, J.Moras, D.

(1993) J Mol Biol 232: 223-241

  • DOI: 10.1006/jmbi.1993.1378
  • Primary Citation of Related Structures:  
    1ATT

  • PubMed Abstract: 
  • The crystal structure of cleaved antithrombin III (ATIII) has been determined to 3.2 A resolution by single isomorphous replacement, real space density modification and phase extension protocols. The heavy-atom sites and the first molecular envelope were determined owing to the molecular replacement solution previously reported and partially refined ...

    The crystal structure of cleaved antithrombin III (ATIII) has been determined to 3.2 A resolution by single isomorphous replacement, real space density modification and phase extension protocols. The heavy-atom sites and the first molecular envelope were determined owing to the molecular replacement solution previously reported and partially refined. Refinement of the two molecules of the asymmetric unit led to a crystallographic R-factor of 0.212 for all reflections between 8.0 and 3.2 A, without inclusion of water molecules. The root-mean-square deviation from ideal values is, respectively, 0.015 A and 3.6 degrees for bond lengths and bond angles. The topology of the molecule closely resembles that of cleaved serpins inhibitors with the two residues forming the reactive bond at opposite ends of the molecule. The most significant difference between ATIII and alpha 1-antitrypsin lies in the 45 residue N-terminal extension in ATIII which contribute to the definition of the heparin binding site. This loop region at the surface of the molecule is held by two disulphide bridges to the protein core and exhibits high temperature factor values. It forms a valley which restrains the possibilities for binding of heparin. Docking of the pentasaccharide unit which represents the minimum fragment of heparin able to bind to ATIII indicates a possible role for arginine 14 in the interaction of heparin and the protein.


    Related Citations: 
    • Antithrombin III: Structural and Functional Aspects
      Mourey, L., Samama, J.P., Delarue, M., Choay, J., Lormeau, J.C., Petitou, M., Moras, D.
      (1990) Biochimie 72: 599
    • Crystal Structure of Bovine Antithrombin III
      Delarue, M., Samama, J.-P., Mourey, L., Moras, D.
      (1990) Acta Crystallogr B 46: 550
    • Crystallization and Preliminary Crystallographic Data for Bovine Antithrombin III
      Samama, J.P., Delarue, M., Mourey, L., Choay, J., Moras, D.
      (1989) J Mol Biol 210: 877

    Organizational Affiliation

    UPR de Biologie Structurale Institut de Biologie, Moléculaire et Cellulaire du CNRS, Strasbourg, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ANTITHROMBIN IIIA, B429Bos taurusMutation(s): 0 
Gene Names: SERPINC1AT3
UniProt
Find proteins for P41361 (Bos taurus)
Explore P41361 
Go to UniProtKB:  P41361
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP41361
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Work: 0.212 
  • R-Value Observed: 0.212 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 91.3α = 90
b = 91.3β = 90
c = 383.1γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1994-07-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance