|Application ||IHC, WB|
|Reactivity||Human, Mouse, Rat|
|Calculated MW||83239 Da|
|Other Names||Ribosomal protein S6 kinase alpha-2, S6K-alpha-2, 90 kDa ribosomal protein S6 kinase 2, p90-RSK 2, p90RSK2, MAP kinase-activated protein kinase 1c, MAPK-activated protein kinase 1c, MAPKAP kinase 1c, MAPKAPK-1c, Ribosomal S6 kinase 3, RSK-3, pp90RSK3, RPS6KA2, MAPKAPK1C, RSK3|
|Target/Specificity||A synthetic peptide corresponding to residues surrounding threonine 353 and threonine 356 of human RSK3 was used as an immunogen.|
|Format||50 mM Tris-Glycine (pH 7.4), 0.15 M NaCl, 40% Glycerol, 0.01% sodium azide and 0.05% BSA.|
|Storage||Maintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.|
|Precautions||RSK3 Antibody is for research use only and not for use in diagnostic or therapeutic procedures.|
|Function||Serine/threonine-protein kinase that acts downstream of ERK (MAPK1/ERK2 and MAPK3/ERK1) signaling and mediates mitogenic and stress-induced activation of transcription factors, regulates translation, and mediates cellular proliferation, survival, and differentiation. May function as tumor suppressor in epithelial ovarian cancer cells.|
|Cellular Location||Nucleus. Cytoplasm|
|Tissue Location||Widely expressed with higher expression in lung, skeletal muscle, brain, uterus, ovary, thyroid and prostate|
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Provided below are standard protocols that you may find useful for product applications.
Rsk-3 is a member of a family of 90-kDa ribosomal protein S6 kinases, which includes Rsk-1, Rsk-2 and Rsk-3. These are broadly expressed serine/threonine protein kinases (1) that are activated in response to mitogenic stimuli, including extracellular signal-regulated protein kinases Erk1 and Erk2 (2). Rsk-3 is a distinct isoform of p90Rsk that translocates to the cell nucleus, phosphorylates potential nuclear targets, and may have a unique upstream activator (3). Several sites, such as Ser380, Thr359, Ser363 and Thr573, are important for its activation. Active Rsks appear to play a major role in transcriptional regulation by translocating to the nucleus and phosphorylating c-Fos and CREB (2,4).
1. Dalby, K.N., et al. Identification of Regulatory Phosphorylation Sites in Mitogen-activated Protein Kinase (MAPK)-activated Protein Kinase-1a/p90rsk That Are Inducible by MAPK. J. Biol. Chem. 273: 149
2. Frodin, M. and S. Gammeltoft. Role and regulation of 90 kDa ribosomal S6 kinase (RSK) in signal transduction. Mol. Cell. Endocrinol. 151: 65
3. Zhao, Y., et al. RSK3 encodes a novel pp90rsk isoform with a unique N-terminal sequence: growth factor-stimulated kinase function and nuclear translocation. Mol Cell Biol. 15: 4353
4. Chen, R., et al. Phosphorylation of the c-Fos Transrepression Domain by Mitogen-Activated Protein Kinase and 90-kDa Ribosomal S6 Kinase. Proc. Natl. Acad. Sci. USA 90: 10952
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