PPARGC1B (Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-Beta): PPARGC1B is a coactivator of the PPARγ receptor that plays a central role in energy metabolism. It helps regulate genes involved in energy production, including mitochondrial biogenesis and fatty acid metabolism. This gene is important in metabolic processes and has been linked to conditions such as obesity and diabetes.