Anti-PR antibodies can be readily obtained from commercial sources and may refer to several targets. The progesterone receptor, encoded in humans by the gene PGR, is a steroid receptor activated by progesterone. PR may also refer to PR-domain containing proteins, such as PRDM1. PR domain zinc finger protein 1, also known as BLIMP-1, functions as a gene repressor by binding to the beta-IFN gene promoter. Visit the antibody supplier page for specific target information.