Protein kinase with a significantly reduced Ca(2+)+/CAM affinity and dependence compared to other members of the CaMK family. May play a role in the down-regulation of CRE-dependent gene activation probably by phosphorylation of the CREB coactivator CRTC2/TORC2 and the resulting retention of TORC2 in the cytoplasm. ATP + L-seryl-[protein] = ADP + H(+) + O-phospho-L-seryl-[protein] ATP + L-threonyl-[protein] = ADP + H(+) + O-phospho-L-threonyl-[protein] Binds to and stabilizes microtubules (By similarity). Interacts with MAPK8IP1/JIP-1, MAPK8IP2/JIP-2, MAPK9/JNK2, PPP1R9B/NEURABIN-2 and actin. Colocalizes with microtubules. Expressed in the central and peripheral nervous system including the brain, spinal cord, cranial and dorsal root ganglia and in the parasympathetic ganglia. Present in neurons, but not in glial cells, in most forebrain areas. Strong expression in the hippocampal CA1 pyramidal cell layer. Expressed in the photoreceptor sensory cilium complex and in eyes. Also detected in individual cells of the olfactory epithelium. At 17.5 dpc, predominantly expressed in the central nervous system, throughout the forebrain, midbrain, hindbrain, and the spinal cord. Expressed in the developing neocortex and at low levels in the ventricular zone, especially in the outer neuroblastic layer. In the developing retina, strongly expressed in the postmitotic inner neuroblastic layer. Also found in the developing ovary and, to a lower extent, throughout the kidney. The doublecortin domains are involved in the colocalization with microtubules. Autophosphorylated. Frequent spontaneous seizures that originate in the hippocampus, with most animals dying in the first few months of life. Belongs to the protein kinase superfamily. CAMK Ser/Thr protein kinase family. CaMK subfamily.