Recombinant full-length human DGKQ was expressed by baculovirus in Sf9 insect cells using an N-terminal GST tag. Diacylglycerol kinase theta (DAG kinase theta) is the only member of class V diacylglycerol kinase, which contains three cysteine-rich domains, a proline-rich region, and a Ras-associating domain and mediates the regeneration of phosphatidylinositol from diacylglycerol in cell signal transduction. DGKQ has been associated with Parkinson’s disease in a genome-wide meta-analysis study. Stimulated DGK theta activity promotes the SF1-dependent transcription of CYP17 in human adrenocortical cells. ADP-Glo Kinase Assay is a luminescent kinase assay that measures ADP formed from a kinase reaction; ADP is converted into ATP, which is a substrate in a reaction catalyzed by Ultra-Glo Luciferase that produces light. The luminescent signal positively correlates with ADP amount and kinase activity. The assay is well suited for measuring the effects chemical compounds have on the activity of a broad range of purified kinases, making it ideal for both primary screening as well as kinase selectivity profiling. The ADP-Glo Kinase Assay can be used to monitor the activity of virtually any ADP-generating enzyme (e.g., kinase or ATPase) using up to 1mM ATP.