Responds to activation by environmental stress and pro-inflammatory cytokines by phosphorylating a number of transcription factors, primarily components of AP-1 such as JUN, JDP2 and ATF2 and thus regulates AP-1 transcriptional activity. In T-cells, JNK1 and JNK2 are required for polarized differentiation of T-helper cells into Th1 cells. Phosphorylates heat shock factor protein 4 (HSF4).
Specificity
Natural and recombinant Rat Mitogen-activated protein kinase 8
Binds to at least four scaffolding proteins, MAPK8IP1/JIP-1, MAPK8IP2/JIP-2, MAPK8IP3/JIP-3/JSAP1 and SPAG9/MAPK8IP4/JIP-4. These proteins also bind other components of the JNK signaling pathway. Interacts with TP53, WWOX and JAMP. Interacts with NFATC4. Interacts (phosphorylated form) with NFE2; the interaction phosphorylates NFE2 in undifferentiated cells. Interacts with MECOM; regulates JNK signaling (By similarity). Forms a complex with MAPK8IP1 and RGNEF.
[15/1/25 17:38] Upload to ab completed in less than a minute: 1 file transferred (13.4 Kb/s) Cited for: S-NITROSYLATION AT CYS-116;MUTAGENESIS OF CYS-116
[15/1/25 17:38] Upload to ab completed in less than a minute: 1 file transferred (13.4 Kb/s) Cited for: IDENTIFICATION IN A COMPLEX WITH MAPK8IP1 AND ARHGEF28
[15/1/25 17:38] Upload to ab completed in less than a minute: 1 file transferred (13.4 Kb/s) Cited for: FUNCTION;INTERACTION WITH MAPK8IP1; STMN2; STMN3 AND STMN4;SUBCELLULAR LOCATION