CD222 Antibody – Mouse

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]

IGF2R: a multifunctional type I transmembrane protein receptor that binds insulin-like growth factor 2 at the cell surface and mannose-6-phosphate-tagged proteins in the trans-Golgi network. Also known as the cation-independent mannose-6 phosphate (M6P) receptor. Clears IGF2 from the cell surface to attenuate signaling, and transports M6P-tagged lysosomal enzymes from the Golgi complex and the cell surface to lysosomes. M6P-tagged lysosomal enzymes bind specifically to mannose-6- phosphate receptors in the Golgi apparatus and the resulting receptor-ligand complex is transported to an acidic prelyosomal compartment where the low pH mediates the dissociation of the complex. Acts as a positive regulator of T-cell coactivation, by binding DPP4. Belongs to the MRL1/IGF2R family.

Protein type: Receptor, misc.; Vesicle; Membrane protein, integral

Chromosomal Location of Human Ortholog: 6q26

Cellular Component: extracellular space; cell surface; clathrin coat; focal adhesion; lysosomal membrane; integral to plasma membrane; trans-Golgi network; trans-Golgi network transport vesicle; membrane; nuclear envelope lumen; perinuclear region of cytoplasm; endocytic vesicle; late endosome; endosome

Molecular Function: G-protein coupled receptor activity; identical protein binding; mannose binding; protein binding; retinoic acid binding; enzyme binding; transporter activity; G-protein alpha-subunit binding; phosphoprotein binding; receptor activity; glycoprotein binding; insulin-like growth factor II binding; insulin-like growth factor receptor activity

Biological Process: G-protein coupled receptor protein signaling pathway; receptor-mediated endocytosis; organ regeneration; response to retinoic acid; insulin-like growth factor receptor signaling pathway; positive regulation of apoptosis; spermatogenesis; signal transduction; liver development; post-embryonic development

Disease: Hepatocellular Carcinoma