This product is an active protein and may elicit a biological response in vivo, handle with caution.
c Jun N terminal kinase 1
C-JUN kinase 1
c-Jun N-terminal kinase 1
MAP kinase 8
Mitogen activated protein kinase 8
Mitogen-activated protein kinase 8
Protein kinase JNK1
Protein kinase, mitogen-activated, 8
Stress-activated protein kinase 1
Stress-activated protein kinase JNK1
FunctionResponds 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 (By similarity). Phosphorylates heat shock factor protein 4 (HSF4). JNK1 isoforms display different binding patterns: beta-1 preferentially binds to c-Jun, whereas alpha-1, alpha-2, and beta-2 have a similar low level of binding to both c-Jun or ATF2. However, there is no correlation between binding and phosphorylation, which is achieved at about the same efficiency by all isoforms.
Sequence similaritiesBelongs to the protein kinase superfamily. CMGC Ser/Thr protein kinase family. MAP kinase subfamily. Contains 1 protein kinase domain.
DomainThe TXY motif contains the threonine and tyrosine residues whose phosphorylation activates the MAP kinases.
Post-translational modificationsDually phosphorylated on Thr-183 and Tyr-185, which activates the enzyme.