Phosphopantetheine
![Space-filling model of the phosphopantetheine molecule as an anion (2- charge)](/Images/godic/202502/02/Phosphopantetheine_anion_3D_spacefill0111.png")
Phosphopantetheine, also known as 4'-Phosphopantetheine, is an essential prosthetic group of acyl carrier protein (ACP) and peptidyl carrier proteins (PCP) and aryl carrier proteins (ArCP) derived from Coenzyme A. It is also present in formyltetrahydrofolate dehydrogenase.