Involved in several processes, including positive regulation of lamellipodium organization; positive regulation of substrate adhesion-dependent cell spreading; and positive regulation of supramolecular fiber organization. Located in lamellipodium. Part of filamentous actin. Is expressed in palatal shelf; skeleton; telencephalon; and vibrissa. Orthologous to human CARMIL1 (capping protein regulator and myosin 1 linker 1). [provided by Alliance of Genome Resources, Apr 2022]