Figure 6. Analysis of the proteolytic fragmentation of lysine-mutant DORs show delayed destruction specifically of the receptor endodomain.
HEK293 cells stably expressing F-DOR-0cK-HA were incubated with 10μM DADLE for the indicated time period before lysis. HA-linked fragments were immunoprecipitated, treated with PNGaseF, and separated via SDS-PAGE. Shown is a representative anti-HA blot (A). Proteolytic fragments resolved to the indicated sizes, corresponding topologically as diagrammed in (B).