Serine/threonine-protein kinase involved in memory formation (PubMed:29473541). Promotes long-term memory by phosphorylating meng and by regulating CrebB protein stability and activity (PubMed:29473541). As part of ethanol response in the glia, mediates ethanol-induced structural remodeling of actin cytoskeleton and perineurial membrane topology when anchored to the membrane (PubMed:29444420). ATP + L-seryl-[protein] = ADP + H(+) + O-phospho-L-seryl-[protein] ATP + L-threonyl-[protein] = ADP + H(+) + O-phospho-L-threonyl-[protein] Activated by cAMP. Composed of two regulatory chains and two catalytic chains. More abundant in adult head than adult body. Belongs to the protein kinase superfamily. AGC Ser/Thr protein kinase family. cAMP subfamily.