[Isolation and properties of the fibrinolytic enzyme from the Actinomyces thermovulgaris cultural broth].

A fibrinolytic enzyme was isolated from the cultural broth of Actinomyces thermovulgaris T-54 by precipitation with ammonium sulphate to 0.8 saturation and chromatography on GE-cellulose and CM-cellulose. The enzyme is homogeneous as was confirmed by disk electrophoresis in polyacrylamide gel. Some properties of the enzyme were studied. A modification of the method is suggested to assay the fibrinolytic activity.