p115 also known also as TAP, VDP, USO1 is a peripheral membrane protein which recycles between the cytosol and the Golgi apparatus during interphase. p115 plays a crucial role in membrane trafficking, which is essential for maintaining cellular homeostasis and facilitating communication between organelles. p115 is primarily localized to the Golgi complex, where p115 is involved in the transport of vesicles from the endoplasmic reticulum to the Golgi apparatus. p115′s localization ensures the proper delivery of proteins and lipids, which are necessary for various cellular functions, including secretion and membrane recycling. p115 interacts with other proteins such as giantin and GM130, which are key players in membrane tethering events, further underscoring p115′s importance in the secretory and endocytic pathways.