UCP2, or Uncoupling Protein 2, is a protein found in the mitochondria of cells. It plays a role in regulating energy metabolism by dissipating the proton gradient, which can lead to the production of heat instead of ATP, the energy currency of the cell. This process is important for maintaining energy balance and can influence various metabolic conditions. Research has shown that UCP2 may be involved in several physiological processes, including thermogenesis, insulin secretion, and oxidative stress management. Its expression can be affected by factors such as diet and exercise, making it a potential target for studies related to obesity and metabolic disorders.