Predicted to enable ubiquitin ligase-substrate adaptor activity. Predicted to be involved in extracellular vesicle biogenesis; protein transport; and protein ubiquitination. Predicted to act upstream of or within positive regulation of ubiquitin-protein transferase activity. Predicted to be located in endosome and extracellular vesicle. Predicted to be active in cytoplasm and plasma membrane. Orthologous to human ARRDC4 (arrestin domain containing 4). [provided by Alliance of Genome Resources, Apr 2022]