Enables protein self-association. Involved in several processes, including calcium-mediated signaling; negative regulation of protein phosphorylation; and regulation of cell-substrate adhesion. Located in several cellular components, including cortical cytoskeleton; perinuclear region of cytoplasm; and postsynaptic density. Is expressed in central nervous system; dorsal root ganglion; liver lobe; and sensory organ. Orthologous to human DMTN (dematin actin binding protein). [provided by Alliance of Genome Resources, Apr 2022]