Enables identical protein binding activity. Involved in actin cytoskeleton reorganization; cell-matrix adhesion; and regulation of cell shape. Located in several cellular components, including cell cortex; nucleoplasm; and ruffle. Is expressed in several structures, including alimentary system; limb; nervous system; sensory organ epithelium; and vibrissa. Orthologous to human MKLN1 (muskelin 1). [provided by Alliance of Genome Resources, Apr 2022]