DGKA

DGKα belongs to the type I branch of diacylglycerol kinases, enzymes that phosphorylate diacylglycerol to phosphatidic acid, thereby both terminating DAG-dependent PKC signaling and generating the lipid second messenger PA. DGKα carries a recoverin homology domain containing a pair of calcium-binding EF-hand motifs plus two C1 domains, making its activity calcium-sensitive. It is abundant in lymphoid tissues and has been studied extensively in T cells, where it enforces anergy and limits T-cell receptor-driven signaling. Through these actions DGKα shapes adaptive immune responses and is pursued as a target for immuno-oncology and for improving engineered T-cell therapies.