A-kinase anchoring protein for GSK3B and PKA that regulates or facilitates their kinase activity towards their targets. The ternary complex enhances Wnt-induced signaling by facilitating the GSK3B- and PKA-induced phosphorylation of beta-catenin leading to beta-catenin degradation and stabilization respectively. Upon cAMP activation, the ternary complex contributes to neuroprotection against oxidative stress-induced apoptosis by facilitating the PKA-induced phosphorylation of DML1 and PKA-induced inactivation of GSK3B. During neurite outgrowth promotes neuron proliferation; while increases beta-catenin-induced transcriptional activity through GSK3B kinase activity inhibition, reduces N-cadherin level to promote cell cycle progression (By similarity). May play a role in cleft palate formation and is required for postnatal life through modulation of the activity of GSK3B during development (PubMed:26582204). Forms a complex composed of PRKAR2A or PRKAR2B, GSK3B and GSKIP through GSKIP interaction; facilitates PKA-induced phosphorylation of GSK3B leading to GSK3B inactivation; recruits DNM1L through GSK3B for PKA-mediated phosphorylation of DNM1L; promotes beta-catenin degradation through GSK3B-induced phosphorylation of beta-catenin; stabilizes beta-catenin and enhances Wnt-induced signaling through PKA-induced phosphorylation of beta-catenin. Interacts with GSK3B; induces GSK3B-mediated phosphorylation of GSKIP and inhibits GSK3B kinase activity. Phosphorylated by GSK3B. Knockout Gskip mice die at birth. At 18.5 dpc, embryos are still alive but rapidly die within 5 to 30 min after casarean section. Embryos obtained at 18.5 dpc are cyanotic, suffer from respiratory distress, and fail to initiate breathing properly. Belongs to the GSKIP family.