ARFIP2

Plays a role in constitutive metalloproteinase (MMP) secretion from the trans Golgi network. May have important functions during vesicle biogenesis at certain cargo subdomains, which could be predominantly utilized by secreted MMPs, such as MMP7 and MMP2. Also involved in autophagy by regulating the starvation-dependent trafficking of ATG9A vesicles which deliver the phosphatidylinositol 4-kinase beta (PI4KB) to the autophagosome initiation site. Involved in phagophore growth during mitophagy by regulating ATG9A trafficking to mitochondria. In addition, plays a role in NF-kappa-B inhibition by interacting with IKBKB and IKBKG..

Function from UniProtKB (P53365), read 2026-09-23. CC BY 4.0.