3.4.23.23 A101T the proteolytic activity of the mutant is similar to the non-mutant enzyme. The milk clotting activity of the mutant is increased compared to the non-mutant enzyme 754970 3.4.23.23 A101T/G186D the proteolytic activity of the mutant is similar to the non-mutant enzyme. The milk clotting activity of the mutant is increased compared to the non-mutant enzyme 754970 3.4.23.23 E13A the proteolytic activity of the mutant decreases remarkably to almost a half of that of non-mutant enzyme 754970 3.4.23.23 E13D the proteolytic activity of the mutant decreases remarkably to almost a half of that of non-mutant enzyme 754970 3.4.23.23 E13P the proteolytic activity of the mutant decreases remarkably to almost a half of that of non-mutant enzyme 754970 3.4.23.23 E13Q the proteolytic activity of the mutant decreases remarkably to almost a half of that of non-mutant enzyme 754970 3.4.23.23 G186D the proteolytic activity of the mutant is similar to the non-mutant enzyme. The milk clotting activity of the mutant is increased compared to the non-mutant enzyme 754970 3.4.23.23 G186D/E13D the mutant shows a significant milk-clotting activity. The mutant rennet can decrease hydrolysis of protein during ripening of cheese. The mutant has a reduction in thermostability along with a sharp decrease in proteolytic activity 754970 3.4.23.23 G186D/E13Q the mutant has a reduction in thermostability along with a sharp decrease in proteolytic activity 754970 3.4.23.23 G186D/E13Q the mutant shows a significant milk-clotting activity. The mutant rennet can decrease hydrolysis of protein during ripening of cheese. The mutant has a reduction in thermostability along with a sharp decrease in proteolytic activity 754970