Serine/threonine-protein kinase VRK2 (VRK2)

Serine/threonine kinase that modulates several signal transduction pathways. Isoform 1 modulates the stress response to hypoxia and cytokines, such as interleukin-1 beta (IL1B) and this depends on its interaction with MAPK8IP1, which assembles mitogen-activated protein kinase (MAPK) complexes.

Inhibition of signal transmission mediated by the assembly of MAPK8IP1-MAPK complexes reduces JNK phosphorylation and JUN-dependent transcription. Phosphorylates'Thr-18' of p53/TP53, histone H3, and might also phosphorylate MAPK8IP1.