Plays a role in protein ubiquitination, sorting and degradation through its association with VCP . Involved in ubiquitin-mediated membrane proteins trafficking to late endosomes in an ESCRT-dependent manner, and hence plays a role in synaptic vesicle recycling (By similarity). May play a role in macroautophagy, regulating for instance the clearance of damaged lysosomes . Plays a role in cerebellar Purkinje cell development (By similarity). Positively regulates cytosolic and calcium-independent phospholipase A2 activities in a tumor necrosis factor alpha (TNF-alpha)- or lipopolysaccharide (LPS)-dependent manner, and hence prostaglandin E2 biosynthesis (, ).
Subcellular locations: Nucleus, Cytoplasm, Synapse
Recruited to damaged lysosomes decorated with K48-linked ubiquitin chains.