Proto-oncogene with serine/threonine kinase activity that can prevent apoptosis and promote cell survival and protein translation. May contribute to tumorigenesis through: the delivery of survival signaling through phosphorylation of BAD which induces release of the anti-apoptotic protein Bcl-X(L), the regulation of cell cycle progression and protein synthesis and by regulation of MYC transcriptional activity. Additionally to this role on tumorigenesis, can also negatively regulate insulin secretion by inhibiting the activation of MAPK1/3 (ERK1/2), through SOCS6. Involved also in the control of energy metabolism and regulation of AMPK activity in modulating MYC and PPARGC1A protein levels and cell growth (By similarity). ATP + L-seryl-[protein] = ADP + H(+) + O-phospho-L-seryl-[protein] ATP + L-threonyl-[protein] = ADP + H(+) + O-phospho-L-threonyl-[protein] Interacts with BAD. Interacts with PPP2CA; this interaction promotes dephosphorylation of PIM3, ubiquitination and proteasomal degradation. Interacts with SOCS6. Detected in various tissues, including brain. By membrane depolarization or forskolin. Ubiquitinated, leading to proteasomal degradation. Phosphorylated. Interaction with PPP2CA promotes dephosphorylation (By similarity). Autophosphorylated (in vitro). Belongs to the protein kinase superfamily. CAMK Ser/Thr protein kinase family. PIM subfamily. Extended N-terminus.