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Biotechnology Reports 2020-Jun

A contradictory action of procoagulant ficin by a fibrinolytic serine protease from Egyptian Ficus carica latex

Aðeins skráðir notendur geta þýtt greinar
Skráðu þig / skráðu þig
Krækjan er vistuð á klemmuspjaldið
Mohamed Hamed
Mohamed El-Badry
Eman Kandil
Ibrahim Borai
Afaf Fahmy

Lykilorð

Útdráttur

Ficus carica is one of the most popular and edible plants. Its trees emanate latex of high medical importance. The well-studied procoagulant effect of ficin is a hallmark of this latex which protrudes an interesting question of how can the plant control this effect? In the present work, we purified and characterized a serine protease (FPIII) with fibrinolytic activity from F. carica latex and study the anticoagulant character of the latex. FPIII was inhibited by PMSF and its molecular weight was 48 kDa. The optimum pH and temperature of FPIII were detected at 8.5 and 60 °C, respectively. The activation energy of FPIII was 7 kcal/mol and was thermal stable up to 60 °C. FPIII tended to hydrolyze different protein substrates and showed a good catalytic efficiency (Kcat/Km). The anticoagulant effects and fibrinogenolytic activities of latex crude extract and FPIII were detected, which controls the procoagulant effect of ficin.

Keywords: Anticoagulant; Characterization; Ficuscarica; Purification; Serine protease.

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