Revision 1

#7621Store at -80C

Cell Signaling Technology

Orders: 877-616-CELL (2355) [email protected]

Support: 877-678-TECH (8324)

Web: [email protected] cellsignal.com

3 Trask LaneDanversMassachusetts01923USA
For Research Use Only. Not for Use in Diagnostic Procedures.
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UniProt ID:

#Q96BR1

Entrez-Gene Id:

23678

Product Information

Storage

Antibodies are supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA and 50% glycerol. Do not aliquot the antibodies. Peptides are supplied at 6 µM in 0.001% DMSO. Enzymes are supplied in 50 mM Tris-HCL (pH 8.0), 100 mM NaCl,
5 mM DTT, 15 mM reduced glutathione and 20% glycerol. Store at -80°C.
Keep enzymes on ice during use.
Avoid repeated freeze-thaw cycles.

Source / Purification

The GST-Kinase fusion protein was produced using a baculovirus expression system with a construct expressing full-length human SGK3 (Met1-Leu496) (GenBank Accession No. NM_013257.3) with an amino-terminal GST tag. The protein was purified by one-step affinity chromatography using glutathione-agarose.

Product Description

The kit provides a means of performing kinase activity assays with recombinant full-length human SGK3 kinase. It includes active SGK3 kinase (supplied as a GST fusion protein), a biotinylated peptide substrate and a phospho-serine/threonine antibody for detection of the phosphorylated form of the substrate peptide.
Molecular Formula Peptide substrate, Biotin-PLK (Ser137): 1,945 Daltons. GST-SGK3 Kinase: 83 kDa.

Background

Serum and glucocorticoid-inducible kinase (SGK) is a serine/threonine kinase closely related to Akt (1). SGK is rapidly induced in response to a variety of stimuli, including serum, glucocorticoid, follicle stimulating hormone, osmotic shock, and mineralocorticoids. SGK activation can be accomplished via HGF PI3K-dependent pathways and by integrin-mediated PI3K-independent pathways (2,3). Induction and activation of SGK has been implicated in activating the modulation of anti-apoptotic and cell cycle regulation (4-6). SGK also plays an important role in activating certain potassium, sodium, and chloride channels, suggesting its involvement in the regulation of processes such as cell survival, neuronal excitability, and renal sodium excretion (2). SGK is negatively regulated by ubiquitination and proteasome degradation (7).

  1. Webster, M.K. et al. (1993) Mol Cell Biol 13, 2031-40.
  2. Kobayashi, T. and Cohen, P. (1999) Biochem J 339 ( Pt 2), 319-28.
  3. Park, J. et al. (1999) EMBO J 18, 3024-33.
  4. Brunet, A. et al. (2001) Mol Cell Biol 21, 952-65.
  5. Mikosz, C.A. et al. (2001) J Biol Chem 276, 16649-54.
  6. Hayashi, M. et al. (2001) J Biol Chem 276, 8631-4.
  7. Brickley, D.R. et al. (2002) J Biol Chem 277, 43064-70.

Species Reactivity

Species reactivity is determined by testing in at least one approved application (e.g., western blot).

Cross-Reactivity Key

H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected

Trademarks and Patents

Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
All other trademarks are the property of their respective owners. Visit cellsignal.com/trademarks for more information.

Limited Uses

Except as otherwise expressly agreed in a writing signed by a legally authorized representative of CST, the following terms apply to Products provided by CST, its affiliates or its distributors. Any Customer's terms and conditions that are in addition to, or different from, those contained herein, unless separately accepted in writing by a legally authorized representative of CST, are rejected and are of no force or effect.

Products are labeled with For Research Use Only or a similar labeling statement and have not been approved, cleared, or licensed by the FDA or other regulatory foreign or domestic entity, for any purpose. Customer shall not use any Product for any diagnostic or therapeutic purpose, or otherwise in any manner that conflicts with its labeling statement. Products sold or licensed by CST are provided for Customer as the end-user and solely for research and development uses. Any use of Product for diagnostic, prophylactic or therapeutic purposes, or any purchase of Product for resale (alone or as a component) or other commercial purpose, requires a separate license from CST. Customer shall (a) not sell, license, loan, donate or otherwise transfer or make available any Product to any third party, whether alone or in combination with other materials, or use the Products to manufacture any commercial products, (b) not copy, modify, reverse engineer, decompile, disassemble or otherwise attempt to discover the underlying structure or technology of the Products, or use the Products for the purpose of developing any products or services that would compete with CST products or services, (c) not alter or remove from the Products any trademarks, trade names, logos, patent or copyright notices or markings, (d) use the Products solely in accordance with CST Product Terms of Sale and any applicable documentation, and (e) comply with any license, terms of service or similar agreement with respect to any third party products or services used by Customer in connection with the Products.

Revision 1
#7621

HTScan® SGK3 Kinase Assay Kit

HTScan® SGK3 Kinase Assay Kit: Image 1 Expand Image
Figure 1. SGK3 kinase activity was measured in a radioisotopic filter binding assay using the following reaction conditions: 60 mM HEPES-NaOH, pH 7.5, 3 mM MgCl2, 3 mM MnCl2, 3 µM Na-orthovanadate, 1.2 mM DTT, 1 µM ATP, 2.5 µg/50 µl PEG20,000, Substrate: GST-GSK3 (14-27), variable and recombinant SGK3, variable.
HTScan® SGK3 Kinase Assay Kit: Image 2 Expand Image
Figure 3. Dose dependence curve of SGK3 kinase activity: DELFIA® data generated using Phospho-PLK (Ser137) Antibody #5070 to detect phosphorylation of substrate peptide (#1300) by SGK3 kinase. In a 50 µl reaction, increasing amounts of SGK3 and 1.5 µM substrate peptide were used per reaction at room temperature for 30 minutes. (DELFIA® is a registered trademark of PerkinElmer, Inc.)
HTScan® SGK3 Kinase Assay Kit: Image 3 Expand Image
Figure 5. Staurosporine inhibition of SGK3 kinase activity: DELFIA® data generated using Phospho-PLK (Ser137) Antibody #5070 to detect phosphorylation of SGK3 substrate peptide (#1300) by SGK3 kinase. In a 50 µl reaction, 50 ng SGK3, 1.5 µM substrate peptide, 20 µM ATP and increasing amounts of staurosporine were used per reaction at room temperature for 30 minutes. (DELFIA® is a registered trademark of PerkinElmer, Inc.)
HTScan® SGK3 Kinase Assay Kit: Image 4 Expand Image
Figure 4. Peptide concentration dependence of SGK3 kinase activity: DELFIA® data generated using Phospho-PLK (Ser137) Antibody #5070 to detect phosphorylation of substrate peptide (#1300) by SGK3 kinase. In a 50 µl reaction, 50 ng of SGK3 and increasing concentrations of substrate peptide were used per reaction at room temperature for 30 minutes. (DELFIA® is a registered trademark of PerkinElmer, Inc.)
HTScan® SGK3 Kinase Assay Kit: Image 5 Expand Image
Figure 2. Time course of SGK3 kinase activity: DELFIA® data generated using Phospho-PLK (Ser137) Antibody #5070 to detect phosphorylation of SGK3 substrate peptide (#1300) by SGK3 kinase. In a 50 µl reaction, 50 ng SGK3 and 1.5 µM substrate peptide were used per reaction. (DELFIA® is a registered trademark of PerkinElmer, Inc.)