Enables several functions, including D2 dopamine receptor binding activity; SH3 domain binding activity; and nitric-oxide synthase binding activity. Involved in G protein-coupled receptor internalization; positive regulation of synaptic vesicle endocytosis; and response to amyloid-beta. Located in several cellular components, including Golgi apparatus; synaptic vesicle; and varicosity. Part of protein-containing complex. Is active in presynaptic endocytic zone membrane. Biomarker of Alzheimer's disease. Human ortholog(s) of this gene implicated in developmental and epileptic encephalopathy 31. Orthologous to human DNM1 (dynamin 1). [provided by Alliance of Genome Resources, Apr 2022]