Enables calcium-dependent protein kinase inhibitor activity and protein kinase binding activity. Involved in calcium ion homeostasis; positive regulation of insulin secretion involved in cellular response to glucose stimulus; and positive regulation of systemic arterial blood pressure. Located in dendrite and neuronal cell body. Human ortholog(s) of this gene implicated in ovarian cancer; ovarian carcinoma; and prostate adenocarcinoma. Orthologous to human CAMK2N1 (calcium/calmodulin dependent protein kinase II inhibitor 1). [provided by Alliance of Genome Resources, Apr 2022]