NRIP1 (Nuclear Receptor Interacting Protein 1): NRIP1 is a gene that encodes a protein involved in nuclear receptor signaling. It acts as a coactivator for several nuclear receptors, including estrogen receptors (ERs) and peroxisome proliferator-activated receptors (PPARs). NRIP1 helps regulate gene expression in response to hormonal signals and is linked to processes such as metabolism and cell growth.