Enables protein kinase binding activity. Involved in synaptic vesicle priming. Acts upstream of or within cellular calcium ion homeostasis. Located in several cellular components, including GABA-ergic synapse; glutamatergic synapse; and synaptic vesicle. Is expressed in several structures, including alimentary system; cardiovascular system; genitourinary system; nervous system; and sensory organ. Orthologous to human SV2A (synaptic vesicle glycoprotein 2A). [provided by Alliance of Genome Resources, Apr 2022]