1BUI

Structure of the ternary microplasmin-staphylokinase-microplasmin complex: a proteinase-cofactor-substrate complex in action


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.287 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.204 

Starting Models: experimental
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This is version 1.5 of the entry. See complete history


Literature

The ternary microplasmin-staphylokinase-microplasmin complex is a proteinase-cofactor-substrate complex in action.

Parry, M.A.Fernandez-Catalan, C.Bergner, A.Huber, R.Hopfner, K.P.Schlott, B.Guhrs, K.H.Bode, W.

(1998) Nat Struct Biol 5: 917-923

  • DOI: https://doi.org/10.1038/2359
  • Primary Citation of Related Structures:  
    1BUI

  • PubMed Abstract: 

    The serine proteinase plasmin is the key fibrinolytic enzyme that dissolves blood clots and also promotes cell migration and tissue remodeling. Here, we report the 2.65 A crystal structure of a ternary complex of microplasmin-staphylokinase bound to a second microplasmin. The staphylokinase 'cofactor' does not affect the active-site geometry of the plasmin 'enzyme', but instead modifies its subsite specificity by providing additional docking sites for enhanced presentation of the plasminogen 'substrate' to the 'enzymes's' active site. The activation loop of the plasmin 'substrate', cleaved in these crystals, can be reconstructed to show how it runs across the active site of the plasmin 'enzyme' prior to activation cleavage. This is the first experimental structure of a productive proteinase-cofactor-macromolecular substrate complex. Furthermore, it provides a template for the design of improved plasminogen activators and plasmin inhibitors with considerable therapeutical potential.


  • Organizational Affiliation

    Max-Planck Institute of Biochemistry, Department for Structural Research, Martinsried, Germany. parry@biochem.mpg.de


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Plasminogen
A, B
250Homo sapiensMutation(s): 0 
Gene Names: PLG
EC: 3.4.21.7
UniProt & NIH Common Fund Data Resources
Find proteins for P00747 (Homo sapiens)
Explore P00747 
Go to UniProtKB:  P00747
PHAROS:  P00747
GTEx:  ENSG00000122194 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00747
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Staphylokinase128Staphylococcus phage 42D.mMutation(s): 0 
UniProt
Find proteins for P15240 (Staphylococcus phage 42D)
Explore P15240 
Go to UniProtKB:  P15240
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP15240
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
0GJ
Query on 0GJ

Download Ideal Coordinates CCD File 
D [auth A]L-alpha-glutamyl-N-{(1S)-4-{[amino(iminio)methyl]amino}-1-[(1S)-2-chloro-1-hydroxyethyl]butyl}glycinamide
C14 H28 Cl N6 O5
XELWNHKFCNMWQO-LPEHRKFASA-O
Biologically Interesting Molecules (External Reference) 1 Unique
Entity ID: 3
IDChains NameType/Class2D Diagram3D Interactions
PRD_000288 (0GJ)
Query on PRD_000288
D [auth A]GLU-GLY-ARG-CHLOROMETHYL KETONEPeptide-like / Inhibitor
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.287 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.204 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 76.14α = 90
b = 76.14β = 90
c = 324.03γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
X-PLORrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1999-09-02
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Atomic model, Database references, Derived calculations, Non-polymer description, Structure summary, Version format compliance
  • Version 1.3: 2013-02-27
    Changes: Other
  • Version 1.4: 2017-04-05
    Changes: Other
  • Version 1.5: 2023-08-09
    Changes: Data collection, Database references, Derived calculations, Refinement description