The function of MOB4 (MOB family member 4, phocein, Ensembl gene identifier ENSG00000115540) is as follows. Part of the striatin-interacting phosphatase and kinase (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. {ECO:0000269|PubMed:18782753, ECO:0000269|PubMed:33633399}.