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  • Title: Purification, characterization and fibrino(geno)lytic activity of cysteine protease from Tabernaemontana divaricata latex.
    Author: Singh MK, Rajagopalan A, Tanimu H, Sukumaran BO.
    Journal: 3 Biotech; 2021 Feb; 11(2):106. PubMed ID: 33569263.
    Abstract:
    Protease was isolated and purified from Tabernaemontana divaricata latex and its hemostatic potential was analyzed. Crude latex enzyme was purified through ion exchange and gel filtration chromatography. Purified protease was characterized and its thrombin-like (coagulant assay, fibrinogen polymerizing, and fibrinogenolytic activity) and plasmin-like (blood and plasma clot lysis) activities were assessed accordingly. The homogeneous nature of protease was confirmed with the identification of a single band approximately at 25-kDa molecular weight position. The purified enzyme showed an enhancement of 77.32% in clot inducing ability and 89.86% improvement in blood clot lysis in comparison to that by the crude enzyme. All three subunits (Aα, Bβ and γ chains) of human fibrinogen were hydrolyzed by the purified enzyme. PAGE results of the fibrinolytic activity and blood clot lytic effect by the purified enzyme indicated the plasmin-like activity. The study lays a foundation for the development of enzyme-based approaches for pharmaceutical innovations, in which plant latex proteases can be utilized as a potential natural agent for wound healing applications.
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