Predicted to enable actin filament binding activity; cytoskeletal motor inhibitor activity; and profilin binding activity. Involved in positive regulation of dendritic spine morphogenesis; positive regulation of receptor localization to synapse; and positive regulation of synaptic plasticity. Acts upstream of or within several processes, including cell communication by chemical coupling; cell communication by electrical coupling; and maintenance of protein location in cell. Located in several cellular components, including gap junction; glutamatergic synapse; and postsynaptic density. Is active in postsynaptic cytosol and postsynaptic membrane. Is expressed in several structures, including alimentary system; genitourinary system; limb; nervous system; and retina. Orthologous to human DBN1 (drebrin 1). [provided by Alliance of Genome Resources, Apr 2022]