All are required for conversion of progesterone to estrogen except
11 - hydroxylase generates coisol from 11-deoxycoisol and coicosterone from 11-deoxycoicosterone.Ref: DM Vasudevan, 7th edition, page no: 665, fig 52.2 and 52.3
Lyase
11-hydroxylase
Reductase
Isomerase
Endocrinology