Serine/threonine-protein kinase involved in the regulation of the mitotic cell cycle, cell proliferation, apoptosis, organization of the cytoskeleton and neurite outgrowth. Functions in part via its role in ubiquitin-dependent proteasomal protein degradation. Functions downstream of
ATM and phosphorylates p53/
TP53 at 'Ser-46', and thereby contributes to the induction of apoptosis in response to DNA damage. Phosphorylates
NFATC1, and thereby inhibits its accumulation in the nucleus and its transcription factor activity. Phosphorylates
EIF2B5 at 'Ser-544', enabling its subsequent phosphorylation and inhibition by
GSK3B. Likewise, phosphorylation of
NFATC1, CRMP2/
DPYSL2 and CRMP4/
DPYSL3 promotes their subsequent phosphorylation by
GSK3B. May play a general role in the priming of GSK3 substrates. Inactivates
GYS1 by phosphorylation at 'Ser-641', and potentially also a second phosphorylation site, thus regulating glycogen synthesis. Mediates EDVP E3 ligase complex formation and is required for the phosphorylation and subsequent degradation of
KATNA1. Phosphorylates
TERT at 'Ser-457', promoting
TERT ubiquitination by the EDVP complex. Phosphorylates
SIAH2, and thereby increases its ubiquitin ligase activity. Promotes the proteasomal degradation of
MYC and
JUN, and thereby regulates progress through the mitotic cell cycle and cell proliferation. Promotes proteasomal degradation of
GLI2 and
GLI3, and thereby plays a role in smoothened and sonic hedgehog signaling. Plays a role in cytoskeleton organization and neurite outgrowth via its phosphorylation of
DCX and
DPYSL2. Phosphorylates CRMP2/
DPYSL2, CRMP4/
DPYSL3,
DCX,
EIF2B5,
EIF4EBP1,
GLI2,
GLI3,
GYS1,
JUN,
MDM2,
MYC,
NFATC1, p53/
TP53, TAU/
MAPT and
KATNA1. Can phosphorylate histone H1, histone H3 and histone H2B (in vitro). Can phosphorylate
CARHSP1 (in vitro).
UniProt