Figure 3.
CD16 stimulation induces a transient PI5KIα membrane translocation. Unstimulated or CD16-stimulated cultured NK cells (1 × 108/sample) were fractionated as described in “Materials and methods.” (Top) PI5KIα immunoprecipitates were obtained from protein extract derived from membrane and soluble fraction, loaded on 8% SDS-PAGE, and analyzed by immunoblotting with anti-PI5KIα Ab. (Middle and bottom) Total cell extract derived from the samples of the same experiment was loaded on 8% SDS-PAGE and analyzed by immunoblotting. The equivalent protein amount within the lanes was checked by Ponceau S red staining. One experiment representative of 3 performed is shown.