MingMin Zheng's paper was accepted by Journal of agricultural and food chemistry
Zheng MM, Chen KC, Wang RF, Li H, Li CX, Xu JH. Engineering 7β-Hydroxysteroid Dehydrogenase for Enhanced Ursodeoxycholic Acid Production by Multiobjective Directed Evolution. J Agric Food Chem.2017,15;65(6):1178-1185.