Plasma membrane progesterone (P4) receptor coupled to G proteins . Seems to act through a G(i) mediated pathway . May be involved in oocyte maturation . Involved in neurosteroid inhibition of apoptosis . Also binds dehydroepiandrosterone (DHEA), pregnanolone, pregnenolone and allopregnanolone .
Subcellular locations: Cell membrane
Expressed in a wide range of tissues including ovary, testis, placenta, uterus and bladder.