Involved in the maintenance of Golgi structure by interacting with giantin, affecting protein transport between the endoplasmic reticulum and Golgi.Involved in hormone-induced steroid biosynthesis in testicular Leydig cells.Recruits PI4KB to the Golgi apparatus membrane, enhances the enzyme activity of PI4KB activity via its membrane recruitment thereby increasing the local concentration of the substrate in the vicinity of the kinase.
