2SAK

STAPHYLOKINASE (SAKSTAR VARIANT)

• PDB DOI: https://doi.org/10.2210/pdb2SAK/pdb

• Classification: PLASMINOGEN ACTIVATOR
• Organism(s): Staphylococcus aureus
• Mutation(s): Yes 


• Deposited: 1997-02-20 Released: 1998-02-25 
• Deposition Author(s): Rabijns, A., De Bondt, H.L., De Maeyer, M., Lasters, I., De Ranter, C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.237 
• R-Value Work: 0.181 
• R-Value Observed: 0.181 

Literature

Three-dimensional structure of staphylokinase, a plasminogen activator with therapeutic potential.

Rabijns, A., De Bondt, H.L., De Ranter, C.

(1997) Nat Struct Biol 4: 357-360

• PubMed: 9145104 
• DOI: https://doi.org/10.1038/nsb0597-357
• Primary Citation of Related Structures:  
  2SAK


• PubMed Abstract: 
  

  The three-dimensional structure of staphylokinase has been determined at 1.8 A. The puntative site of interaction with plasminogen was identified and epitopes were mapped.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 14.02 kDa 
• Atom Count: 1,076 
• Modelled Residue Count: 121 
• Deposited Residue Count: 121 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
STAPHYLOKINASE	A	121	Staphylococcus aureus	Mutation(s): 1
UniProt
Find proteins for P68802 (Staphylococcus phage S phi-C) Explore P68802  Go to UniProtKB:  P68802

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
TRS	B [auth A]	2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL C4 H12 N O3 LENZDBCJOHFCAS-UHFFFAOYSA-O

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.237 
• R-Value Work: 0.181 
• R-Value Observed: 0.181 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 60.6	α = 90
b = 43.73	β = 115.63
c = 54.27	γ = 90

Software Package:

Software Name	Purpose
PHASES	phasing
X-PLOR	model building
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1998-02-25 
Deposition Author(s): Rabijns, A., De Bondt, H.L., De Maeyer, M., Lasters, I., De Ranter, C.

Revision History  

• Version 1.0: 1998-02-25
  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: 2024-02-21
  Changes: Data collection, Database references, Derived calculations