Recombination signal binding protein for immunoglobulin kappa J region is a protein that in humans is encoded by the RBPJ gene.[5][6][7]
RBPJ[8] also known as CBF1, is the human homolog for the Drosophila gene Suppressor of Hairless. Its promoter region is classically used to demonstrate Notch1 signaling.[9]
RBPJ has been shown to interact with: