 The protein encoded by this gene is a GTPase that converts GTP to GDP and GMP.In addition, GBP2 gene can be a relationship between cell surface receptor and intracellular effectors which can transmit extracellular information into the cells as well as an intracellular signal transduction protein.A study on the bovine GBP2 gene showed the importance of GBP2 in the regulation of cell proliferation and the resistance to the pathogen infection such as an Exhibition of antiviral activity against influenza virus.