Mechanism-Guided Synergistic Engineering of Substrate Access and Catalytic Microenvironment in Oxidosqualene Cyclase for Enhanced Amyrin Biosynthesis.
Oxidosqualene cyclases (OSCs) catalyze the cyclization of 2,3-oxidosqualene into diverse triterpenoids, yet their intrinsically low catalytic efficiency restricts biosynthetic productivity. Here, we establish a mechanism-guided synergistic engineering strategy that extends beyond conventional active-site engineering by...