Preliminary crystallographic study on a low molecular weight form of bacterial plasminogen activator staphylokinase.
Staphylokinase, a 17 kDa protein, produced by certain strains of Staphylococcus aureus functions as a fibrin-specific plasminogen activator. During its interaction with plasminogen, staphylokinase is converted into a low molecular weight form by loss of ten amino-terminal residues. This low molecular weight form of recombinant staphylokinase has been crystallized using the hanging-drop vapor-diffusion technique with polyethylene glycol 4000 as precipitant. Crystals belong to the orthorhombic space group C222(1) with unit-cell dimensions a = 43.78, b = 59.86 and c = 103.25 A and one molecule in the asymmetric unit. These crystals diffract to about 2.4 A resolution.
Chattopadhyay
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Center for Macromolecular Crystallography, University of Alabama at Birmingham, 35294, USA. debasish@polaris.cmc.uab.edu
Stewart
J E
JE
Smith
C D
CD
DeLucas
L J
LJ
Narayana
S V
SV