Mitochondrial uncoupling protein 4 (UCP4)

Mitochondrial uncoupling protein 4 (UCP4, SLC25A27) is a brain-enriched member of the mitochondrial anion carrier protein (MACP) family that mediates proton leak across the inner mitochondrial membrane, uncoupling oxidative phosphorylation from ATP synthesis and regulating energy dissipation as heat[1][5][3]. UCP4 plays an important role in neuronal cells by modulating the mitochondrial membrane potential, reducing oxidative stress, and protecting against metabolic stress and neurotoxins[3][7]. UCP4 expression is largely restricted to brain tissue and is developmentally regulated. Genetic variants in SLC25A27 have been associated with neurodegenerative conditions, suggesting that UCP4-mediated regulation of mitochondrial function is relevant to diseases such as Alzheimer’s disease, frontotemporal dementia, Parkinson’s disease, and psychiatric disorders[2][3]. No approved drugs directly target UCP4.

Other names

SLC25A27Solute carrier family 25 member 27UNQ772/PRO1566FLJ33552UCP 4uncoupling protein 4

Not applicable, as no clinically used drug is confirmed to directly target UCP4. Drugs or small molecules would theoretically modulate its uncoupling activity or expression, affecting mitochondrial proton gradient, ROS generation, or neuronal survival.