Required for dynein-dynactin complex and NUMA1 recruitment at the mitotic cell cortex during anaphase. Interacts with FCGR1A. Interacts with TRPC4 (By similarity). Interacts (via CTD domain) with FKBP2 (PubMed:9531554). Interacts with NUMA1; this interaction is negatively regulated by CDK1 during metaphase and promotes anaphase-specific localization of NUMA1 in symmetrically dividing cells (By similarity). Widely expressed.