CD222 Antibody – Mouse Monoclonal

This gene encodes a receptor for both insulin-like growth factor 2 and mannose 6-phosphate, although the binding sites for either are located on different segments of the receptor. This receptor functions in the intracellular trafficking of lysosomal enzymes, the activation of transforming growth factor beta, and the degradation of insulin-like growth factor 2. While the related mouse gene shows exclusive expression from the maternal allele, imprinting of the human gene appears to be polymorphic, with only a minority of individuals showing expression from the maternal allele. [provided by RefSeq, Apr 2013]

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

Chromosomal Location of Human Ortholog: 6q26

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

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

Biological Process: receptor-mediated endocytosis; G-protein coupled receptor protein signaling pathway; 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