Regulates lamellipodial actin dynamics in a CTTN-dependent manner (By similarity). Associates with core striatin-interacting phosphatase and kinase (STRIPAK) complex to form CTTNBP2NL-STRIPAK complexes. STRIPAK complexes have critical roles in protein (de)phosphorylation and are regulators of multiple signaling pathways including Hippo, MAPK, nuclear receptor and cytoskeleton remodeling. Different types of STRIPAK complexes are involved in a variety of biological processes such as cell growth, differentiation, apoptosis, metabolism and immune regulation (PubMed:18782753).