Title : Confluence induced threonine41/serine45 phospho-beta-catenin dephosphorylation via ceramide-mediated activation of PP1cgamma.

Pub. Date : 2007 Dec

PMID : 17996206






2 Functional Relationships(s)
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1 The effect of confluence on beta-catenin dephosphorylation was prevented by down regulation of nSMase2 using siRNA; reciprocally, exogenous addition of short or very long chain ceramides induced dephosphorylation of beta-catenin. Ceramides sphingomyelin phosphodiesterase 3 Homo sapiens
2 All together these results establish: A) a specific intracellular pathway involving the activation of PP1 to mediate the effects of confluence-induced beta-catenin dephosphorylation and B) PP1 as a lipid-regulated protein phosphatase downstream of nSMase2/ceramide. Ceramides sphingomyelin phosphodiesterase 3 Homo sapiens