Dose-dependent binding activities of DGKη-PH to PI(3,4)P2, PI(4,5)P2, PI(3,4,5)P2, PA, PC, and PS. Indicated amounts (1.6, 3.1, 6.3, 13, 25, 50, and 100 pmol) of PI(3,4)P2, PI(4,5)P2, PI(3,4,5)P3, PA, PC, and PS were spotted onto a nitrocellulose membrane. The membrane was incubated with GST-tagged DGKη-PH. Lipid-bound DGKη-PH was detected by immunostaining with anti-GST antibody. A representative result of three independent experiments is shown. It was confirmed that lipid-bound GST alone was not detectable in this experiment (data not shown).