Overview

  • Product name
    CREB1 ELISA Kit
  • Detection method
    Colorimetric
  • Precision
    Intra-assay
    Sample n Mean SD CV%
    A431 extract 6 4.1%
    Inter-assay
    Sample n Mean SD CV%
    A431 extract 3 4.5%
  • Sample type
    Cell Lysate, Tissue Homogenate
  • Assay type
    Sandwich (quantitative)
  • Sensitivity
    1 µg/ml
  • Range
    2 µg/ml - 200 µg/ml
  • 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 in vitro SimpleStep ELISA™ (Enzyme-Linked Immunosorbent Assay) kit is designed for the quantitative measurement of 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.

    .

  • Tested applications
    Suitable for: Sandwich ELISAmore details
  • Platform
    Microplate

Properties

  • Storage instructions
    Store at +4°C. Please refer to protocols.
  • Components 1 x 96 tests
    10X Wash Buffer PT 1 x 15ml
    50X Cell Extraction Enhancer Solution 1 x 1ml
    5X Cell Extraction Buffer PTR (ab193970) 1 x 12ml
    CREB1 (Total) Capture Antibody 1 x 3ml
    CREB1 (Total) Detector Antibody 1 x 3ml
    Lyophilized CREB1 Control Lysate 1 vial
    Plate Seal 1 unit
    SimpleStep Pre-Coated 96-Well Microplate (ab206978) 1 unit
    Stop Solution 1 x 12ml
    TMB Substrate 1 x 12ml
  • Research areas
  • Function
    This protein binds the cAMP response element (CRE), a sequence present in many viral and cellular promoters. CREB stimulates transcription on binding to the CRE. Transcription activation is enhanced by the TORC coactivators which act independently of Ser-133 phosphorylation. Implicated in synchronization of circadian rhythmicity.
  • Involvement in disease
    Defects in CREB1 may be a cause of angiomatoid fibrous histiocytoma (AFH) [MIM:612160]. A distinct variant of malignant fibrous histiocytoma that typically occurs in children and adolescents and is manifest by nodular subcutaneous growth. Characteristic microscopic features include lobulated sheets of histiocyte-like cells intimately associated with areas of hemorrhage and cystic pseudovascular spaces, as well as a striking cuffing of inflammatory cells, mimicking a lymph node metastasis. Note=A chromosomal aberration involving CREB1 is found in a patient with angiomatoid fibrous histiocytoma. Translocation t(2;22)(q33;q12) with CREB1 generates a EWSR1/CREB1 fusion gene that is most common genetic abnormality in this tumor type.
  • Sequence similarities
    Belongs to the bZIP family.
    Contains 1 bZIP domain.
    Contains 1 KID (kinase-inducible) domain.
  • Post-translational
    modifications
    Stimulated by phosphorylation. Phosphorylation of both Ser-133 and Ser-142 in the SCN regulates the activity of CREB and participates in circadian rhythm generation. Phosphorylation of Ser-133 allows CREBBP binding (By similarity). Phosphorylated upon DNA damage, probably by ATM or ATR.
    Sumoylated by SUMO1. Sumoylation on Lys-304, but not on Lys-285, is required for nuclear localization of this protein. Sumoylation is enhanced under hypoxia, promoting nuclear localization and stabilization.
  • Cellular localization
    Nucleus.
  • Information by UniProt
  • Alternative names
    • Active transcription factor CREB
    • cAMP response element binding protein 1
    • cAMP-responsive element-binding protein 1
    • CREB
    • CREB-1
    • CREB1
    • CREB1_HUMAN
    • Cyclic AMP-responsive element-binding protein 1
    • Transactivator protein
    see all
  • Database links

Applications

Our Abpromise guarantee covers the use of ab176639 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

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

  • 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 (Total) are normalized and plotted.

  • 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.

  • 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).

Protocols

References

ab176639 has not yet been referenced specifically in any publications.

Customer reviews and Q&As

There are currently no Customer reviews or Questions for ab176639.
Please use the links above to contact us or submit feedback about this product.

Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"

Sign up