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PathScan® Total 4E-BP1 Sandwich ELISA Kit #7179

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  • ELISA

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Important Ordering Details

Custom Ordering Details:

If kit quantities from the same lot are needed in unlisted sizes, contact us for processing time and pricing.

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    Supporting Data

    REACTIVITY H
    Application Key:
    • ELISA-ELISA 
    Species Cross-Reactivity Key:
    • H-Human 

    Product Information

    Product Description

    CST's PathScan® Total 4E-BP1 Sandwich ELISA Kit is a solid phase sandwich enzyme-linked immunosorbent assay (ELISA) that detects endogenous levels of 4E-BP1. A 4E-BP1 Rabbit Antibody has been coated onto the microwells. After incubation with cell lysates, 4E-BP1 (phospho and nonphospho) is captured by the coated antibody. Following extensive washing, a 4E-BP1 Mouse Detection Antibody is added to detect the captured 4E-BP1 protein. Anti-mouse IgG, HRP-linked Antibody #7076 is then used to recognize the bound detection antibody. HRP substrate, TMB, is added to develop color. The magnitude of absorbance for this developed color is proportional to the quantity of total 4E-BP1.

    *Antibodies in kit are custom formulations specific to kit.

    Protocol

    Specificity / Sensitivity

    CST's PathScan® Total 4E-BP1 Sandwich ELISA Kit #7179 detects endogenous levels of 4E-BP1. As shown in Figure 1, using CST's PathScan® Phospho-4E-BP1 (Thr37/46) Sandwich ELISA Kit #7216, a significant induction of 4E-BP1 phosphorylation at Thr37/46 is detected in serum and amino acid starved HEK-293T cells treated with insulin for 30 minutes after replenishing the amino acids. The level of total 4E-BP1 (phospho and nonphospho) remains unchanged as shown by Western analysis and by PathScan® Total 4E-BP1 Sandwich ELISA Kit #7179.
    This kit detects proteins from the indicated species, as determined through in-house testing, but may also detect homologous proteins from other species.

    Species Reactivity:

    Human

    Background

    Translation repressor protein 4E-BP1 (also known as PHAS-1) inhibits cap-dependent translation by binding to the translation initiation factor eIF4E. Hyperphosphorylation of 4E-BP1 disrupts this interaction and results in activation of cap-dependent translation (1). Both the PI3 kinase/Akt pathway and FRAP/mTOR kinase regulate 4E-BP1 activity (2,3). Multiple 4E-BP1 residues are phosphorylated in vivo (4). While phosphorylation by FRAP/mTOR at Thr37 and Thr46 does not prevent the binding of 4E-BP1 to eIF4E, it is thought to prime 4E-BP1 for subsequent phosphorylation at Ser65 and Thr70 (5).
    For Research Use Only. Not For Use In Diagnostic Procedures.
    Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
    PathScan is a registered trademark of Cell Signaling Technology, Inc.
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