Function: Phosphorylates inhibitors of NF-kappa-B thus leading to the dissociation of the inhibitor/NF-kappa-B complex and ultimately the degradation of the inhibitor. Also phosphorylates NCOA3. Phosphorylates 'Ser-10' of histone H3 at NF-kappa-B- regulated promoters during inflammatory responses triggered by cytokines.
Subcellular Localization: Cytoplasm. Nucleus. Note=Shuttles between the cytoplasm and the nucleus.