Fig. 5: RHBDL2 inhibits the degradation of N1ICD via ubiquitin-proteasome pathway.

A N1ICD and RHBDL2 levels were confirmed by Western blot analysis in the indicated PC cells treated with 40 μg/ml of cycloheximide (CHX). The indicated PC cells were treated with chloroquine (B), NH4Cl (C), 3-MA (D), or MG132 (E), respectively. Then, the level of N1ICD was detected by Western blot analysis. F The PC cells were treated with 15 μM of MG132 for 6 h prior to harvest. Cell lysate was immunoprecipitated with Myc-tag antibody and immunoblotted as indicated.