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Alexa Fluor® 488 Mouse anti-S6 (pS240)
Alexa Fluor® 488 Mouse anti-S6 (pS240)

Analysis of S6 (pS240) in activated human peripheral blood mononuclear cells (PBMC). PBMC were isolated by density gradient centrifugation (Ficoll-Paque™ PLUS, Cat. No. 17-1440-02) and either left untreated (open histogram) or treated with PMA (Sigma-Aldrich, Cat. No. P8139) at 50 nM/10^6 cells for 30 minutes (shaded histogram). Cells were then fixed in BD Cytofix™ buffer (Cat. No. 554655) at 37°C for 10 minutes, then permeabilized with BD Phosflow™ Perm Buffer III (Cat. No. 558050) on ice for at least 30 minutes, and then stained with Alexa Fluor® 488 Mouse anti-S6 (pS240). For data analysis, lymphocytes were selected by scatter profile.  Flow cytometry was performed on a BD FACSCalibur™ flow cytometry system.

Alexa Fluor® 488 Mouse anti-S6 (pS240)

Western blot analysis of S6 (pS240).  The specificity of mAb N4-41 was confirmed by western blot analysis using unconjugated Mouse anti-S6 (pS240) antibody on lysates from untreated (lane 1) or PMA-treated (lane 2) PBMC.  S6 (pS240) is identified as a band of 32 kDa, with increased intensity in the PMA-treated cells.  Purified Mouse anti-Actin monoclonal antibody (Cat. No. 612656 or 612657) was the gel-loading control.

Analysis of S6 (pS240) in activated human peripheral blood mononuclear cells (PBMC). PBMC were isolated by density gradient centrifugation (Ficoll-Paque™ PLUS, Cat. No. 17-1440-02) and either left untreated (open histogram) or treated with PMA (Sigma-Aldrich, Cat. No. P8139) at 50 nM/10^6 cells for 30 minutes (shaded histogram). Cells were then fixed in BD Cytofix™ buffer (Cat. No. 554655) at 37°C for 10 minutes, then permeabilized with BD Phosflow™ Perm Buffer III (Cat. No. 558050) on ice for at least 30 minutes, and then stained with Alexa Fluor® 488 Mouse anti-S6 (pS240). For data analysis, lymphocytes were selected by scatter profile.  Flow cytometry was performed on a BD FACSCalibur™ flow cytometry system.

Western blot analysis of S6 (pS240).  The specificity of mAb N4-41 was confirmed by western blot analysis using unconjugated Mouse anti-S6 (pS240) antibody on lysates from untreated (lane 1) or PMA-treated (lane 2) PBMC.  S6 (pS240) is identified as a band of 32 kDa, with increased intensity in the PMA-treated cells.  Purified Mouse anti-Actin monoclonal antibody (Cat. No. 612656 or 612657) was the gel-loading control.

Product Details
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BD Phosflow™
40S ribosomal protein S6; Phosphoprotein NP33; RPS6; RS6
Human (QC Testing), Mouse, Rat (Predicted)
Mouse BALB/c IgG1, κ
Phosphorylated Human ribosomal protein S6 Peptide
Intracellular staining (flow cytometry) (Routinely Tested), Bioimaging (Not Recommended)
20 µl
AB_1645611
Aqueous buffered solution containing BSA and ≤0.09% sodium azide.
RUO


Preparation And Storage

Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze. The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography. The antibody was conjugated to Alexa Fluor® 488 under optimum conditions, and unreacted Alexa Fluor® 488 was removed.

Recommended Assay Procedures

This antibody conjugate is suitable for intracellular staining of human peripheral blood mononuclear cells using BD Cytofix™ Fixation Buffer.  Any of the three BD Phosflow™ permeabilization buffers may be used.

Product Notices

  1. This reagent has been pre-diluted for use at the recommended Volume per Test. We typically use 1 × 10^6 cells in a 100-µl experimental sample (a test).
  2. Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
  3. Alexa Fluor® 488 fluorochrome emission is collected at the same instrument settings as for fluorescein isothiocyanate (FITC).
  4. The Alexa Fluor®, Pacific Blue™, and Cascade Blue® dye antibody conjugates in this product are sold under license from Molecular Probes, Inc. for research use only, excluding use in combination with microarrays, or as analyte specific reagents. The Alexa Fluor® dyes (except for Alexa Fluor® 430), Pacific Blue™ dye, and Cascade Blue® dye are covered by pending and issued patents.
  5. Alexa Fluor® is a registered trademark of Molecular Probes, Inc., Eugene, OR.
  6. For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
  7. Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
  8. Source of all serum proteins is from USDA inspected abattoirs located in the United States.
  9. Ficoll-Paque is a trademark of Amersham Biosciences Limited.
560431 Rev. 2
Antibody Details
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N4-41

Ribosomal protein S6 (~29 kDa calculated and ~32 kDa observed molecular weights) is a component of the 40S ribosomal subunit and belongs to the S6E family of ribosomal proteins. The S6 ribosomal protein plays a role in regulating the translation of RNAs and thus controlling the growth and proliferation of cells. S6 ribosomal protein phosphorylation, especially at multiple C-terminal serine residues S235, S236, S240, and S244, activates S6. The activated S6 ribosomal protein in turn upregulates the ribosomal translation of RNA species coding for other ribosomal proteins, peptide elongation factors and other proteins involved in cell cycle entry and progression. These phosphorylations are mediated by various kinases (e.g., p70S6K and PKCD) activated through cellular responses to growth factors, cytokines, tumor promoting agents, and mitogens. The S6 ribosomal protein can be dephosphorylated in growth-arrested cells.

The N4-41 monoclonal antibody specifically detects the S6 ribosomal protein phosphorylated at S240.

560431 Rev. 2
Format Details
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Alexa Fluor™ 488
Alexa Fluor™ 488 Dye is part of the BD blue family of dyes. This is a small organic fluorochrome with an excitation maximum (Ex Max) at 494-nm and an emission maximum (Em Max) at 517-nm. Alexa Fluor™ 488 is designed to be excited by the Blue laser (488 nm) and detected using an optical filter centered near 520-nm (e.g., a 530/30-nm bandpass filter). Please ensure that your instrument’s configurations (lasers and optical filters) are appropriate for this dye.
Alexa Fluor™ 488
Blue 488 nm
494 nm
517 nm
560431 Rev.2
Citations & References
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Development References (7)

  1. Corradetti MN, Inoki K, Guan KL. The stress-inducted proteins RTP801 and RTP801L are negative regulators of the mammalian target of rapamycin pathway. J Biol Chem. 2005; 280(11):9769-9772. (Biology). View Reference
  2. Gu JJ, Santiago L, Mitchell BS. Synergy between imatinib and mycophenolic acid in inducing apoptosis in cell lines expressing Bcr-Abl. Blood. 2005; 105(8):3270-3277. (Biology). View Reference
  3. Jastrzebski K, Hannan KM, Tchoubrieva EB, Hannan RD, Pearson RB. Coordinate regulation of ribosome biogenesis and function by the ribosomal protein S6 kinase, a key mediator of mTOR function. Growth Factors. 2007; 25(4):209-226. (Biology). View Reference
  4. Kleijn M, Proud CG. The regulation of protein synthesis and translation factors by CD3 and CD28 in human primary T lymphocytes. BMC Biochem. 2002; 3:11. (Biology). View Reference
  5. Lal L, Li Y, Smith J, et al. Activation of the p70 S6 kinase by all-trans-retinoic acid in acute promyelocytic leukemia cells.. Blood. 2005; 105(4):1669-77. (Biology). View Reference
  6. Shah OJ, Ghosh S, Hunter T. Mitotic regulation of ribosomal S6 kinase 1 involves Ser/Thr, Pro phosphorylation of consensus and non-consensus sites by Cdc2. J Biol Chem. 2003; 278(18):16433-16442. (Biology). View Reference
  7. Shah OJ, Hunter T. Critical role of T-loop and H-motif phosphorylation in the regulation of S6 kinase 1 by the tuberous sclerosis complex. J Biol Chem. 2004; 279(20):20816-20823. (Biology). View Reference
View All (7) View Less
560431 Rev. 2

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Global - Refer to manufacturer's instructions for use and related User Manuals and Technical data sheets before using this products as described


Comparisons, where applicable, are made against older BD Technology, manual methods or are general performance claims.  Comparisons are not made against non-BD technologies, unless otherwise noted.

For Research Use Only. Not for use in diagnostic or therapeutic procedures.