Enables several functions, including enzyme binding activity; nitric-oxide synthase regulator activity; and transmembrane transporter binding activity. Involved in several processes, including activation of adenylate cyclase activity; regulation of calcium ion transmembrane transporter activity; and regulation of vesicle-mediated transport. Located in several cellular components, including growth cone; myelin sheath; and nucleus. Colocalizes with mitochondrial membrane and synaptic vesicle membrane. Human ortholog(s) of this gene implicated in familial hypertrophic cardiomyopathy. Orthologous to human CALM3 (calmodulin 3). [provided by Alliance of Genome Resources, Apr 2022]