Serpin E1 protein is a serine protease inhibitor that regulates TMPRSS7 and is a major inhibitor of tissue-type plasminogen activator (PLAT) and urokinase-type plasminogen activator (PLAU) .It can significantly downregulate fibrinolysis and control thrombus degradation.Serpin E1 Protein, Mouse (HEK293, His) is the recombinant mouse-derived Serpin E1 protein, expressed by HEK293 , with C-6*His labeled tag.