|Reactivity||Human, Mouse, Rat|
|Calculated MW||48139 Da|
|Application & Usage||Western blotting (1-2 µg/ml), immunoprecipitation (10-20 µg/ml), immunocytochemistry (10-20 µg/ml), and Immunohistochemistry (20-30 µg/ml). However, the optimal conditions should be determined individually. The antibody detects the p46 and p54 JNK/SAPK dually phosphorylated at Thr183 and Tyr185.|
|Other Names||c-Jun kinase, JNK , JNK 1 , JAK1A , MAPK8 , MAPK 8 , SAPK 1 , SAPK1 , Kinase JNK1 , Stress activated protein kinase|
|Formulation||100 µg (0.5 mg/ml) affinity purified rabbit anti-phospho-JNK/SAPK polyclonal antibody in phosphate buffered saline (PBS), pH 7.2, containing 50% glycerol, 1% BSA, 0.02% sodium azide.|
|Handling||The antibody solution should be gently mixed before use.|
|Reconstitution & Storage||-20 °C|
|Precautions||Phospho-JNK/SAPK Antibody is for research use only and not for use in diagnostic or therapeutic procedures.|
|Synonyms||JNK2, PRKM9, SAPK1A|
|Function||Serine/threonine-protein kinase involved in various processes such as cell proliferation, differentiation, migration, transformation and programmed cell death. Extracellular stimuli such as proinflammatory cytokines or physical stress stimulate the stress-activated protein kinase/c-Jun N-terminal kinase (SAP/JNK) signaling pathway. In this cascade, two dual specificity kinases MAP2K4/MKK4 and MAP2K7/MKK7 phosphorylate and activate MAPK9/JNK2. In turn, MAPK9/JNK2 phosphorylates a number of transcription factors, primarily components of AP-1 such as JUN and ATF2 and thus regulates AP-1 transcriptional activity. In response to oxidative or ribotoxic stresses, inhibits rRNA synthesis by phosphorylating and inactivating the RNA polymerase 1-specific transcription initiation factor RRN3. Promotes stressed cell apoptosis by phosphorylating key regulatory factors including TP53 and YAP1. In T-cells, MAPK8 and MAPK9 are required for polarized differentiation of T-helper cells into Th1 cells. Upon T-cell receptor (TCR) stimulation, is activated by CARMA1, BCL10, MAP2K7 and MAP3K7/TAK1 to regulate JUN protein levels. Plays an important role in the osmotic stress-induced epithelial tight-junctions disruption. When activated, promotes beta-catenin/CTNNB1 degradation and inhibits the canonical Wnt signaling pathway. Participates also in neurite growth in spiral ganglion neurons. Phosphorylates the CLOCK-ARNTL/BMAL1 heterodimer and plays a role in the regulation of the circadian clock (PubMed:22441692).|
|Cellular Location||Cytoplasm. Nucleus|
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Provided below are standard protocols that you may find useful for product applications.
The JNK pathway is activated by largely distinct stimuli including inflammatory cytokines (such as TNF-α and IL-1), UV light, inhibitors of protein synthesis and osmotic stress. Activated MEKK1 phosphorylates SEK1 (also known as MKK4), which in turn activates SAPK (also known as JNK). JNK binds tightly to the N-terminal region of c-Jun and ATF-2, and phosphorylates c-Jun at Ser63 and Ser73 and ATF-2 at Thr69 and Thr71.
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