Serine protease. Has fibrinolytic and fibrinogenolytic but no plasminogenolytic activity. Cleaves after Arg and Lys residues. Cleaves fibrinogen alpha chain, beta chain and gamma chain in that order. Inhibited by PMSF. Not inhibited by benzamidine, aprotinin, SBTI, EDTA, EGTA, 2-mercaptoethanol, iodoacetic acid or pepstatin A. Optimum pH is 10. Active from pH 7 to 11. Optimum temperature is 60 degrees Celsius. Active from 30 to 70 degrees Celsius. On the 2D-gel the determined pI of this protein is: 4.55, its MW is: 31 kDa. Belongs to the peptidase S8 family. The order of the peptides shown is unknown.