Xu et al., EMBO J 2007
:
Phospho-Ser133 is required for CREB to bind the KIX domain of the coactivators CBP and p300 (CBP/p300) in vitro, although the importance of this archetype coactivator interaction for endogenous gene expression is unclear
Hansen et al., J Biol Chem 2009
(Breast Neoplasms) :
Phospho-Thr-34-DARPP-32 interacted with protein phosphatase-1 (PP1) and potentiated the Wnt-5a mediated phosphorylation of CREB , a well-known PP1 substrate, but had no effect on CREB phosphorylation by itself