Anti-MEK7/MAP2K7 Antibody Picoband®

MAP2K7 (Mitogen-activated protein kinase kinase 7), also known as MAP kinase kinase 7, MAPKK7, JNKK2, PRKMK7 or MKK7, is an enzyme that in humans is encoded by the MAP2K7 gene. This protein is a member of the mitogen-activated protein kinase kinase family. The MKK7 protein exists as six different isoforms with three possible N-termini (alpha, beta, and gamma isoforms) and two possible C-termini (1 and 2 isoforms) . Schramek et al. (2011) showed that the doxorubicin-mediated DNA damage response in human A549 lung carcinoma cells caused rapid phosphorylation and upregulation of p53 (TP53) . MKK7 knockdown reduced p53 phosphorylation, delayed p53 upregulation, and interfered with cell cycle arrest at G2/M. MKK7 was activated in primary lung tumors, and tumors with a p53 mutation showed even higher MKK7 phosphorylation. Schramek et al. (2011) concluded that MKK7 exerts its tumor suppressive function through p53.

Dual specificity mitogen-activated protein kinase kinase 7; MAP kinase kinase 7; MAPKK 7;2.7.12.2; JNK-activating kinase 2; MAPK/ERK kinase 7; MEK 7; Stress-activated protein kinase kinase 4; SAPK kinase 4; SAPKK-4; SAPKK4; c-Jun N-terminal kinase kinase 2; JNK kinase 2; JNKK 2; MAP2K7; JNKK2, MEK7, MKK7, PRKMK7, SKK4

Immunology, Innate Immunity, Macrophage/Inflammation, MAPK Pathway, Metabolism, Oxidative Stress, Pathways and Processes, Protein Phosphorylation, Redox Metabolism, Ser/Thr Kinases, Signal Transduction, TLR Signaling

Dual specificity protein kinase which acts as an essential component of the MAP kinase signal transduction pathway. Essential component of the stress-activated protein kinase/c-Jun N-terminal kinase (SAP/JNK) signaling pathway. With MAP2K4/MKK4, is the one of the only known kinase to ly activate the stress-activated protein kinase/c-Jun N-terminal kinases MAPK8/JNK1, MAPK9/JNK2 and MAPK10/JNK3. MAP2K4/MKK4 and MAP2K7/MKK7 both activate the JNKs by phosphorylation, but they differ in their preference for the phosphorylation site in the Thr-Pro-Tyr motif. MAP2K4/MKK4 shows preference for phosphorylation of the Tyr residue and MAP2K7/MKK7 for the Thr residue. The monophosphorylation of JNKs on the Thr residue is sufficient to increase JNK activity indicating that MAP2K7/MKK7 is important to trigger JNK activity, while the additional phosphorylation of the Tyr residue by MAP2K4/MKK4 ensures optimal JNK activation. Has a specific role in JNK signal transduction pathway activated by proinflammatory cytokines. The MKK/JNK signaling pathway is also involved in mitochondrial death signaling pathway, including the release cytochrome c, leading to apoptosis. .

1. Lu, X., Nemoto, S., Lin, A. Identification of c-jun NH (2) -terminal protein kinase (JNK) -activating kinase 2 as an activator of JNK but not p38. J. Biol. Chem. 272: 24751-24754, 1997. 2. Schramek, D., Kotsinas, A., Meixner, A., Wada, T., Elling, U., Pospisilik, J. A., Neely, G. G., Zwick, R.-H., Sigl, V., Forni, G., Serrano, M., Gorgoulis, V. G., Penninger, J. M. The stress kinase MKK7 couples oncogenic stress to p53 stability and tumor suppression. Nature Genet. 43: 212-219, 2011. 3. Wu, Z., Wu, J., Jacinto, E., Karin, M. Molecular cloning and characterization of human JNKK2, a novel jun NH (2) -terminal kinase-specific kinase. Molec. Cell. Biol. 17: 7407-7416, 1997.

Store at -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freeze-thaw cycles.