References
PMID:10671552
PMID:11348595
PMID:17928543
in vitro phosphorylation of Cadherin at S834, 836, 842 significantly enhances the affinity with which beta-catenin binds cadherins.
GSK3B and CSNK2 (casein kinase II) have been shown to phosphorylate these sites in vitro.