MAPK8/9 Antibody

Overview

Long Name	Antibody Type	Antibody Isotype	Host	Species Reactivity	Validated Applications	Purification
Mitogen-activated Protein Kinase 8	Polyclonal	IgG	Rabbit	Human, Mouse, Rat	IHC-P, ICC, WB	Immunogen affinity purified.
Immunogen
A synthetic peptide corresponding to a sequence in the middle region of human MAPK8/9(344-363aa EREHTIEEWKELIYKEVMDL), identical to the related mouse and rat sequences.

Properties

Form	Lyophilized
Size	100 µg/vial
Contents	Antibody is lyophilized with 5 mg BSA, 0.9 mg NaCl, 0.2 mg Na2HPO4, 0.05 mg Thimerosal and 0.05 mg NaN3. *carrier free antibody available upon request.
Concentration	Reconstitute with 0.2 mL sterile dH2O (500 µg/ml final concentration).
Storage	At -20 °C for 12 months, as supplied. Store reconstituted antibody at 2-8 °C for one month. For long-term storage, aliquot and store at -20 °C. Avoid repeated freezing and thawing.

Additional Information Regarding the Antigen

Gene	MAPK8
Protein	Mitogen-activated protein kinase 8(MAP kinase 8/MAPK 8)
Uniprot ID	P45983
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 MAPK8/JNK1. In turn, MAPK8/JNK1 phosphorylates a number of transcription factors, primarily components of AP-1 such as JUN, JDP2 and ATF2 and thus regulates AP-1 transcriptional activity. Phosphorylates the replication licensing factor CDT1, inhibiting the interaction between CDT1 and the histone H4 acetylase HBO1 to replication origins. Loss of this interaction abrogates the acetylation required for replication initiation. Promotes stressed cell apoptosis by phosphorylating key regulatory factors including p53/TP53 and Yes-associates protein YAP1. In T-cells, MAPK8 and MAPK9 are required for polarized differentiation of T-helper cells into Th1 cells. Contributes to the survival of erythroid cells by phosphorylating the antagonist of cell death BAD upon EPO stimulation. Mediates starvation-induced BCL2 phosphorylation, BCL2 dissociation from BECN1, and thus activation of autophagy. Phosphorylates STMN2 and hence regulates microtubule dynamics, controlling neurite elongation in cortical neurons. In the developing brain, through its cytoplasmic activity on STMN2, negatively regulates the rate of exit from multipolar stage and of radial migration from the ventricular zone. Phosphorylates several other substrates including heat shock factor protein 4 (HSF4), the deacetylase SIRT1, ELK1, or the E3 ligase ITCH. Phosphorylates the CLOCK-ARNTL/BMAL1 heterodimer and plays a role in the regulation of the circadian clock (PubMed:22441692).
Tissue Specificity
Sub-cellular localization	Cytoplasm.
Sequence Similarities	Belongs to the protein kinase superfamily. CMGC Ser/Thr protein kinase family. MAP kinase subfamily.
Aliases	JNK-46 antibody|Stress-activated protein kinase 1c antibody

Application Details

Application	Concentration*	Species	Validated Using**
Western blot	0.1-0.5μg/ml	Human, Mouse, Rat	AssaySolutio's ECL kit
Immunohistochemistry(Paraffin-embedded Section)	0.5-1μg/ml	Human, Rat Mouse	AssaySolutio's IHC/ICC Detection kit
Immunocytochemistry	0.5-1μg/ml	Human Mouse	AssaySolutio's IHC/ICC Detection kit

AssaySolution recommends Rabbit Chemiluminescent WB Detection Kit (AKIT001B) for Western blot, and Rabbit Peroxidase IHC/ICC Detection Kit (AKIT002B) for IHC(P) and ICC. *Blocking peptide can be purchased at $65. Contact us for more information