IndraLab

Statements


Phosphorylated CTNNB1 is inactive. 2 / 2
2 |

"Because phosphorylation of β-catenin by GSK-3β leads to its rapid ubiquitination and subsequent degradation in the proteosome, inactivation of GSK-3β is often a prerequisite for stimulating the accumulation, nuclear translocation, and functional activity of β-catenin"

"In the absence of the wt apc protein, phosphorylated beta-catenin is rapidly dephosphorylated by serine/threonine protein phosphatase 2a (pp2a). phosphorylated beta-catenin associated with the wild-type apc protein is recruited to the scf(beta-trcp) complex, ubiquitin conjugated, and degraded."