Functions as a sorting receptor in the Golgi compartment required for the intracellular sorting and delivery of soluble vacuolar proteins, like carboxypeptidase Y (CPY) and proteinase A. May execute multiple rounds of sorting by cycling between the late Golgi and a prevacuolar endosome-like compartment. Binds the Golgi-modified P2 form of CPY, and this interaction is dependent on the presence of an intact CPY vacuolar protein sorting signal. Cycles between the Golgi apparatus and the prevacuolar compartments. The lumenal domain contains two regions of approximately 650 AA that exhibit 20% identity. The cytoplasmic domain serves as a Golgi retention/recycling signal. Present with 7210 molecules/cell in log phase SD medium. Belongs to the VPS10-related sortilin family.