research Structure-guided manipulation of the regioselectivity of the cyclosporine A hydroxylase CYP-sb21 from Sebekia benihana
This study found that the cytochrome P450 enzyme CYP-sb21 can hydroxylate cyclosporine A at multiple positions, reducing its immunosuppressive effects but retaining its hair growth-promoting side-effect, and suggests modifications to improve regioselectivity for commercial use.