Enables diacylglycerol kinase activity. Predicted to be involved in several processes, including glycerolipid metabolic process; lipid phosphorylation; and maintenance of postsynaptic density structure. Predicted to act upstream of or within negative regulation of Ras protein signal transduction. Located in nucleus. Is active in glutamatergic synapse and postsynaptic density. Orthologous to human DGKZ (diacylglycerol kinase zeta). [provided by Alliance of Genome Resources, Apr 2022]