According to the text, Statins produced by the yeast Monascus purpureus have been commercialised as blood-cholesterol lowering agents. They act by competitively inhibiting the enzyme responsible for the synthesis of cholesterol. In contrast, Lipases are used in detergents, Cyclosporin A is an immunosuppressive agent, and Streptokinase is a 'clot buster' used for myocardial infarction patients , .