Golgi-scaffold protein which modulates its interactors acitivies by anchoring them to the Golgi apparatus (PubMed:18547165, PubMed:26311497). Functions as a spatial regulator of RAF1 kinase by sequestrating it to the Golgi apparatus (PubMed:18547165). Acts as a positive regulator of cholesterol biosynthesis by mediating the anchoring of the SCAP:SREBP complex in the Golgi apparatus, thereby promoting SCAP:SREBF2 complex formation, potentiating SREBF2 and SREBF1 processing and enhancing lipid synthesis (PubMed:26311497). Also regulates PPARA and PPARG functions by mediating their interaction with E3 ubiquitin ligases, such as STUB1 or HUWE1, leading to their polyubiquitination and proteasome-mediated degradation (By similarity). {ECO:0000250|UniProtKB:Q6TCG8, ECO:0000269|PubMed:18547165, ECO:0000269|PubMed:26311497}. This is the function of Ensembl gene identifier ENSG00000163291 (PAQR3, progestin and adipoQ receptor family member 3).