Scheme 1.
(A) Routes to 17β-estradiol in the breast. The other reductive 17β-HSDs include types 1, 7, & possibly 12; the oxidative isoforms include types 2 and 4. (B) Proposed role for AKR1C3 in prostaglandin signaling.
(A) Routes to 17β-estradiol in the breast. The other reductive 17β-HSDs include types 1, 7, & possibly 12; the oxidative isoforms include types 2 and 4. (B) Proposed role for AKR1C3 in prostaglandin signaling.