Progesterone

Progesterone is a steroid hormone (classified as a progestin) that is the precursor of all the other major classes of steroid hormone (Figure 19.24). Progesterone is a progestin that is synthesized from pregnenolone. (see here).

See also: Steroid Metabolism, Steroid Hormones, Steroid Hormone Synthesis Cholesterol Biosynthesis, Cholesterol, RU486, Steroid and Thyroid Hormones - Intracellular Receptors

INTERNET LINK: Steroid Hormone Metabolism