Stabilizes microtubules and may regulate actin fiber dynamics through the activation of Rho family GTPases (PubMed:25753423). May also function in Wnt signaling by promoting the rapid degradation of CTNNB1 (PubMed:10021369, PubMed:11691822, PubMed:9823329). {ECO:0000269|PubMed:10021369, ECO:0000269|PubMed:11691822, ECO:0000269|PubMed:25753423, ECO:0000269|PubMed:9823329}. This is the function of APC2 (APC regulator of Wnt signaling pathway 2, Ensembl gene identifier ENSG00000115266).