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Ribosomal protein S6 kinases (RSK) are a family of broadly expressed serine/threonine kinases activated in response to mitogenic stimuli, including tumor-promoting growth factors and phorbol esters. RSKs are positioned downstream of the Raf-MEK-ERK signal transduction pathway, and are directly phosphorylated by ERK1 and ERK2extracellular kinases. Active RSKs appear to play a significant role in transcriptional regulation, translocation to the nucleus, and phosphorylation of c-Fos and CREBs.
Current models suggest that RSK activation requires a binding of active ERK1/2 to a docking site at the carboxyl end of RSK. ERK moored to RSK1 phosphorylate at several sites, including the CTD activation loop (carboxyl-terminal kinase domain). The CTD autophosphorylates Serine 380, a site in the central hydrophobic region.
The AlphaLISA® SureFire® Ultra™ p-RSK1 (Ser380) assay is a sandwich immunoassay for the quantitative detection of phospho-RSK1 (phosphorylated on Ser380) in cellular lysates, using Alpha Technology.
AlphaLISA SureFire Ultra kits are compatible with:
Alpha SureFire kits can be used for:
|Experimental Type||In vitro|
|Product Brand Name||AlphaLISA SureFire Ultra|
|Shipping Condition||Blue Ice|
|Unit Size||500 Assay Points|
The introduction of enzyme-linked immunosorbent assays (ELISAs) in the early 1970’s offered researchers a non-radiometric immunoassay platform without compromising sensitivity. Over the last 50 years scientists have made huge strides in disease research and drug discovery and a demand for greater assay throughput and sensitivity has evolved. In response, more robust immunoassays have been developed to address some of the limitations of the standard, colorimetric ELISA.
Find out about the most common limitations of traditional ELISAs and how different ELISA alternative technologies address these limitations.
Product brochure for the Alpha Technology, a versatile, no wash, homogeneous assay technology that's suitable for a broad range of applications.
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