Required for the maintenance of uterine histoarchitecture and normal female reproductive lifespan (By similarity. May serve as a universal non-classical progesterone receptor in the uterus (Probable. Intracellular heme chaperone required for delivery of labile, or signaling heme, to the nucleus (By similarity. Plays a role in adipocyte function and systemic glucose homeostasis. In brown fat, which has a high demand for heme, delivery of labile heme in the nucleus regulates the activity of heme-responsive transcriptional repressors such as NR1D1 and BACH1 (By similarity.,PGRMC2,DG6,PMBP,Signal Transduction,Cell Biology & Developmental Biology,Growth factor,PGRMC2