S. cerevisiae = Saccharomyces cerevisiae
UA = Ursolic acid
IPP = Isopentenyl diphosphate
DMAPP = Dimethylallyl diphosphate
FPP = Farnesyl diphosphate
CYP450 = Cytochrome P450
UGTs = UDP-glycosyltransferases
αAS = α-amyrin synthase
OSCs = Oxidosqualene Cyclases
ER = Endoplasmic reticulum