Enables several functions, including G-protein alpha-subunit binding activity; insulin-like growth factor II binding activity; and retinoic acid binding activity. Involved in several processes, including animal organ regeneration; response to retinoic acid; and response to tetrachloromethane. Located in several cellular components, including extracellular space; late endosome; and perinuclear region of cytoplasm. Part of clathrin coat. Colocalizes with trans-Golgi network. Used to study lung adenocarcinoma. Biomarker of amyotrophic lateral sclerosis. Human ortholog(s) of this gene implicated in diabetes mellitus (multiple); hepatocellular carcinoma; in situ carcinoma (multiple); and nephroblastoma. Orthologous to human IGF2R (insulin like growth factor 2 receptor). [provided by Alliance of Genome Resources, Apr 2022]