SimpleStep

CREB1 pS133 + CREB1 ELISA Kit (ab176659)

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Overview

  • Product name

    CREB1 pS133 + CREB1 ELISA Kit

  • Detection method

    Colorimetric

  • Precision

    Intra-assay
    Sample n Mean SD CV%
    CREB1(pS133) 6 4.7%
    CREB1(Total) 6 4.1%
    Inter-assay
    Sample n Mean SD CV%
    CREB1(pS133) 3 3.9%
    CREB1(Total) 3 4.5%

  • Sample type

    Cell Lysate, Tissue Homogenate

  • Assay type

    Semi-quantitative

  • Assay time

    1h 30m

  • Assay duration

    One step assay

  • Species reactivity

    Reacts with: Mouse, Human
    Predicted to work with: Rat

  • Product overview

    Abcam’s CREB1 (pS133) and CREB1 (Total) in vitro SimpleStep ELISA™ (Enzyme-Linked Immunosorbent Assay) kit is designed for the semi-quantitative measurement of CREB1 (pS133) and Total CREB1 protein in Human and mouse cells.

    The SimpleStep ELISA™ employs an affinity tag labeled capture antibody and a reporter conjugated detector antibody which immunocapture the sample analyte in solution. This entire complex (capture antibody/analyte/detector antibody) is in turn immobilized via immunoaffinity of an anti-tag antibody coating the well. To perform the assay, samples or standards are added to the wells, followed by the antibody mix. After incubation, the wells are washed to remove unbound material. TMB substrate is added and during incubation is catalyzed by HRP, generating blue coloration. This reaction is then stopped by addition of Stop Solution completing any color change from blue to yellow. Signal is generated proportionally to the amount of bound analyte and the intensity is measured at 450 nm. Optionally, instead of the endpoint reading, development of TMB can be recorded kinetically at 600 nm.

  • Notes

    Estimated sensitivity: Phospho-CREB (Ser133): 0.5 µg/mL (tested with MCF-7), Total CREB: 1.0 µg/mL (tested with MCF-7)
    Range: Phospho-CREB (Ser133): 1-100 µg/mL, Total CREB: 2-200 µg/mL

  • Tested applications

    Suitable for: Sandwich ELISAmore details

  • Platform

    Microplate

Properties

Applications

Our Abpromise guarantee covers the use of ab176659 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
Sandwich ELISA Use at an assay dependent concentration.

Images

  • Other - CREB1 pS133 + CREB1 ELISA Kit (ab176659)
    Other - CREB1 pS133 + CREB1 ELISA Kit (ab176659)

    SimpleStep ELISA technology allows the formation of the antibody-antigen complex in one single step, reducing assay time to 90 minutes. Add samples or standards and antibody mix to wells all at once, incubate, wash, and add your final substrate. See protocol for a detailed step-by-step guide.

     

  • Typical cell lysate dilution series
    Typical cell lysate dilution series

    Example of a typical CREB1 (pS133) and CREB1 (Total) cell lysate dilution series. Background-subtracted data values (mean +/- SD) are graphed.

  • Linearity of dilution
    Linearity of dilution

    Linearity of dilution in representative sample matrices. Cellular lysates were prepared at 3 concentrations in common media containing 1X Cell Extraction Buffer PTR. Data from duplicate measurements of CREB1 (pS133) are normalized and plotted.

  • Comparison of CREB1 expression in different cell lines
    Comparison of CREB1 expression in different cell lines

    Cell line analysis for Total CREB1 from 100 µg/mL preparations of cell extracts. Data from triplicate measurements (mean +/- SD) are plotted and compared to 1X Cell Extraction Buffer PTR (zero).

  • CREB1 (pS133) phosphorylation in response to AG1486 treatment
    CREB1 (pS133) phosphorylation in response to AG1486 treatment

    Inhibition of CREB1 (pS133) phosphorylation in MCF-7 cells in response to AG1486 treatment. HeLa cells were cultured in 96-well tissue culture plates and treated (60 min) with a dose-range of AG1486. Cells were then stimulated (10 min) with 100 ng/mL EGF and lysed. Data from quadruplicate measurements of CREB1 (pS133) are plotted and compared against total CREB1 protein levels. Comparative CREB1 (pS133) and CREB1 (Total) data also shown by Western Blot.

Protocols

References

This product has been referenced in:

  • Buono M  et al. Bi-directional signaling by membrane-bound KitL induces proliferation and coordinates thymic endothelial cell and thymocyte expansion. Nat Commun 9:4685 (2018). Read more (PubMed: 30410062) »
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