Function
ACBD3 plays a crucial role in maintaining Golgi structure by interacting with giantin. This interaction influences protein transport between the endoplasmic reticulum and the Golgi apparatus. Furthermore, ACBD3 is involved in hormone-induced steroid biosynthesis within testicular Leydig cells. It acts as a recruiter of PI4KB to the Golgi apparatus membrane, enhancing the enzyme activity of PI4KB through membrane recruitment. This process increases the local concentration of the substrate near the kinase. In the context of microbial infections, ACBD3 plays a critical role in Aichi virus RNA replication by recruiting PI4KB to viral replication sites.