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Phospho-4E-BP1 (Thr37/46) (236B4) Rabbit mAb (SignalFlex mFluor Red 780 Conjugate) #57355

    Supporting Data

    REACTIVITY H M R Mk Dm
    SENSITIVITY Endogenous
    MW (kDa)
    Source/Isotype Rabbit IgG
    Species Cross-Reactivity Key:
    • H-Human 
    • M-Mouse 
    • R-Rat 
    • Mk-Monkey 
    • Dm-D. melanogaster 

    Product Information

    Product Description

    This Cell Signaling Technology® antibody is conjugated to mFluor™ Red 780 fluorescent dye under optimal conditions and formulated at 200 µg/mL. This antibody conjugate is expected to exhibit the same species cross-reactivity as the unconjugated #2855

    Fluorescent Properties

    • ← Excitation: 629 nm ← Emission: 767 nm

    Product Usage Information

    SignalFlex™ conjugates are produced using highly validated Cell Signaling Technology® primary antibodies and conjugation methods that have been rigorously tested, ensuring high-quality conjugates and lot-to-lot consistency. These conjugates are quality control tested by size exclusion chromatography (SEC) to determine antibody integrity. However, they are not tested on specific assays.

    Optimal dilutions/concentrations should be determined by the end user. When performing flow cytometry, we recommend using an isotype control conjugate at the same concentration as the antibody conjugate.

    Storage

    Supplied in PBS (pH 7.2), less than 0.1% sodium azide, and 2 mg/mL BSA. Store at 4°C. Do not aliquot the antibody. Protect from light. Do not freeze.

    Specificity / Sensitivity

    Phospho-4E-BP1 (Thr37/46) (236B4) Rabbit mAb (SignalFlex™ mFluor™ Red 780 Conjugate) detects endogenous levels of 4E-BP1 only when phosphorylated at Thr37 and/or Thr46. This antibody may cross-react with 4E-BP2 and 4E-BP3 when phosphorylated at equivalent sites. Non-specific staining has been observed in mitotic cells by immunofluorescence.

    Species Reactivity:

    Human, Mouse, Rat, Monkey, D. melanogaster

    Source / Purification

    Monoclonal antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Thr37 and Thr46 of mouse 4E-BP1.

    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.
    Alexa Fluor is a registered trademark of Life Technologies Corporation.
    mFluor is a trademark of AAT Bioquest, Inc.
    SignalFlex is a trademark of Cell Signaling Technology, Inc.
    mFluor is manufactured by AAT Bioquest, Inc.
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