IPT domain of the recombination signal Jkappa binding protein (RBP-Jkappa). RBP-J kappa, was initially considered to be involved in V(D)J recombination because of its DNA binding specificity and structural similarity to site-specific recombinases known as the integrase family. Further studies indicated that RBP-J kappa functions as a repressor of transcription, via destabilization of the general transcription factor IID and recruitment of histone deacetylase complexes.
Jiyao W et al.(2023). "The conserved domain database in 2023.",