Figure 2. AT2R interacts with AT1R.
HeLa cells transfected with the expression vectors indicated at the top were serum starved, pre-treated with the AT1R-specific inhibitor losartan or the AT2R-specific inhibitor PD123319, and stimulated by AII. The cells were lysed in lysis buffer and immunoprecipitated with an anti-FLAG antibody, followed by immunoblotting using an anti-HA or anti-FLAG antibody. An aliquot of total cell lysate was also analyzed by immunoblotting.