The PtdIns(4,5)P2 labeling in yeast and liposomes. (A) Distribution of Pil1-GFP observed by conventional fluorescence microscopy. Bar, 10 μm. (B) PtdIns(4,5)P2 labeling by SDS-FRL. MCC (arrows). Bars, 0.5 mm (left), 0.2 μm (right). (C) PtdIns(4,5)P2 labeled by two different concentrations of GST-PHPLCδ1. Bar, 0.5 μm. (D) Liposomes containing 5% PtdIns(4,5)P2 and 1% Liss Rhod phosphatidylethanolamine incubated with or without GFP-PHPLCδ1. Bar, 1 μm. (E) SDS-FRL of PtdIns(4,5)P2-containing liposomes with or without GFP-PHPLCδ1. Bar, 0.2 μm. The PtdIns(4,5)P2 label density in the liposome by SDS-FRL. Mann–Whitney test (n = 27 [without GFP-PHPLCδ1], 25 [with GFP-PHPLCδ1]).