Figure 1.
αDGK activity in NPM/ALK-positive cells. Cell lines were cultured for 30 minutes to 1 hour at 37°C in the absence (-) or presence (+) of either 10 μM R59949 or 1 μM PP2 and lysed thereafter. Total cell lysates (A) or anti-αDGK immunocomplexes (B, upper panel) were analyzed for in vitro DGK enzymatic activity in the presence of [γ-32P] ATP and diolein as exogen substrate; lipid phase was separated by TLC. An aliquot from each anti-αDGK immunoprecipitate was analyzed by SDS-PAGE to ensure that equal amounts of αDGK were present during in vitro kinase assay (B, bottom panel). PA indicates phosphatidic acid.