這個基因編碼胰島素樣生長因子2和6-磷酸甘露糖的受體。每個配體的結合位點都位于蛋白質的不同片段上。該受體具有多種功能，包括溶酶體酶的細胞內轉運、轉化生長因子β的激活和胰島素樣生長因子2的降解。該基因的突變或雜合性喪失與肝癌的風險有關。直系小鼠基因被印記，顯示來自母體等位基因的唯一表達；然而，人類基因的印記可能是多態的，因為只有少數個體顯示來自母體等位基因的偏見表達（pmid:8267611）。[由RefSeq提供，2015年11月]
This gene encodes a receptor for both insulin-like growth factor 2 and mannose 6-phosphate. The binding sites for each ligand are located on different segments of the protein. This receptor has various functions, including in the intracellular trafficking of lysosomal enzymes, the activation of transforming growth factor beta, and the degradation of insulin-like growth factor 2. Mutation or loss of heterozygosity of this gene has been association with risk of hepatocellular carcinoma. The orthologous mouse gene is imprinted and shows exclusive expression from the maternal allele; however, imprinting of the human gene may be polymorphic, as only a minority of individuals showed biased expression from the maternal allele (PMID:8267611). [provided by RefSeq, Nov 2015]