Nuclear tyrosine kinase Rak

Patent Granted Fyn-related kinase (FRK, formerly tyrosine protein kinase 5) is an enzyme that in humans is encoded by the FRK gene.[1][2] The protein encoded by this gene belongs to the TYR family of protein kinases. This tyrosine kinase is a nuclear protein and may function during G1 and S phase of the cell cycle and suppress growth.