Purification and characterization of fibrinolytic protease from Bacillus amyloliquefaciens MCC2606 and analysis of fibrin degradation product by MS/MS.
A serine protease with preference for fibrin protein was purified and characterized from Bacillus amyloliquefaciens MCC2606, isolated from dosa batter. The protease was purified using ammonium sulfate precipitation, ion-exchange, and gel filtration chromatography. The degradation activity of the protease toward the fibrin was significantly higher compared with other protein substrates in the study. The molecular weight of the CFR15-protease was estimated to be 32 kDa based on SDS-PAGE. The purified enzyme exhibited both fibrinolytic and fibrinogenolytic activity. The optimum pH and temperature for the activity of the enzyme was found to be 10.5 and 45°C. A significant inhibition was seen with the protease inhibitors phenyl methyl sulphonyl fluoride and ethylene diamine tetra acetic acid and the activity of the enzyme was enhanced in presence of Mn2+. There was an observed increase in vitro activated partial thromboplastin time and prothrombin time of both time and dose dependent study. Among the four chains of fibrin, the β-chain of fibrin appears to be the primary component and site susceptible for CFR15-protease in early action as indicated by MS/MS analysis of initial degradation products. These results indicated that the CFR15-protease have the potential to be an effective fibrinolytic agent.
['Devaraj|Yogesh|Y|', 'Rajender|Savita Kumari|SK|', 'Halami|Prakash Motiram|PM|']
D000069977:Bacillus amyloliquefaciens D005338:Fibrin Fibrinogen Degradation Products D006863:Hydrogen-Ion Concentration D008345:Manganese D057057:Serine Proteases D053719:Tandem Mass Spectrometry D013696:Temperature
Bacillus amyloliquefaciens fibrin degradation product serine protease fibrinolytic activity fibrinolytic enzymes