Recruits rsa-1 and, thereby, phosphatase let-92/paa-1 complex to the centrosomes (PubMed:17218259). Recruits sys-1/beta-catenin to mitotic centrosomes during the first embryonic cell divisions (PubMed:25819561). Interacts with phosphatase regulatory subunit rsa-1 and tpxl-1 (PubMed:17218259). May interact with spd-5 (PubMed:17218259). May interact with sys-1 (PubMed:25819561). RNAi-mediated knockdown causes defects in spindle assembly characterized by kinetochore microtubule instability, a reduction in centrosomal microtubules and a decrease in outgrowth of microtubule plus ends from centrosomes (PubMed:17218259). Also causes a reduction of sys-1/beta-catenin enrichment at centrosomes throughout early embryonic cleavages (PubMed:25819561). Increases sys-1 nuclear accumulation without affecting sys-1 asymmetric distribution in E and MS blastomers (PubMed:25819561).