Mouse IFN‑ gamma  R1/CD119 PE‑conjugated Antibody

The high-affinity IFN-gamma  receptor complex is made up of two type I membrane proteins, IFN-gamma  R1 (IFN-gamma  R alpha ) and IFN-gamma  R2 (IFN-gamma  R beta ). Both proteins are members of the type II cytokine receptor family and share approximately 52% overall amino acid (aa) sequence identity. IFN-gamma  R1 is the ligand-binding subunit that is both necessary and sufficient for IFN-gamma binding and receptor internalization. IFN-gamma  R2 is required for IFN-gamma signaling but does not bind IFN-gamma by itself. Mouse IFN-gamma  R1 cDNA encodes a 477 aa residue protein with a 22 aa signal peptide, a 231 aa extracellular domain, a 24 aa transmembrane segment, and a 200 aa intracellular domain. Human and mouse IFN-gamma  R1 share 50% amino acid sequence similarity and bind IFN-gamma in a species-specific manner. IFN-gamma  R1 is constitutively expressed in most cell types. Soluble IFN-gamma  R1 that binds IFN-gamma has been detected in biological fluids. The recombinant soluble IFN-gamma  R1 produced at R&D Systems has been shown to bind IFN-gamma with high affinity and is a potent IFN-gamma antagonist.