The function of ENSG00000189159 (JPT1, Jupiter microtubule associated homolog 1) is as follows. Modulates negatively AKT-mediated GSK3B signaling (PubMed:21323578, PubMed:22155408). Induces CTNNB1 'Ser-33' phosphorylation and degradation through the suppression of the inhibitory 'Ser-9' phosphorylation of GSK3B, which represses the function of the APC:CTNNB1:GSK3B complex and the interaction with CDH1/E-cadherin in adherent junctions (PubMed:25169422). Plays a role in the regulation of cell cycle and cell adhesion (PubMed:25169422, PubMed:25450365). Has an inhibitory role on AR-signaling pathway through the induction of receptor proteasomal degradation (PubMed:22155408). {ECO:0000269|PubMed:21323578, ECO:0000269|PubMed:22155408, ECO:0000269|PubMed:25169422, ECO:0000269|PubMed:25450365}.