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IκBε Antibody #9249

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  • WB

Inquiry Info. # 9249

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    Product Specifications

    REACTIVITY H M R Mk
    SENSITIVITY Endogenous
    MW (kDa) 40
    SOURCE Rabbit
    Application Key:
    • WB-Western Blotting 
    Species Cross-Reactivity Key:
    • H-Human 
    • M-Mouse 
    • R-Rat 
    • Mk-Monkey 

    Product Information

    Product Description

    MW (kDa) 40
    Activity ****** The range listed in PDP for this antigen is 59-70. This does not match the most commonly identified human entries in a BLAST search (for most BLAST returns the antigen sequence matched Human IkB epsilon 199-209). The 59-70 notation does not correlate with other standard database entries for human IkB epsilon - including the uniprot enrty (http://www.uniprot.org/uniprot/O00221). For this antigen the correct notation is residues 199-209, residues 59-70 (as currently listed) is incorrect. Note Q198 has been substituted with a cysteine in the immunizing antigen (Q198C, thus 198-208?). Also note the webpage and datasheet state: "Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues near the middle of human IκBε". This information is correct and consistent with the antigen at residues 199-209. The peptide notebook will remain incorrect.

    Product Usage Information

    Application Dilution
    Western Blotting 1:1000

    Storage

    Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA and 50% glycerol. Store at –20°C. Do not aliquot the antibody.

    Protocol

    Specificity / Sensitivity

    IκBε Antibody detects endogenous levels of total IκBε protein independent of phosphorylation.

    Species Reactivity:

    Human, Mouse, Rat, Monkey

    Source / Purification

    Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues near the middle of human IκBε. Antibodies are purified by protein A and peptide affinity chromatography.

    Background

    The NF-κB/Rel transcription factors are present in the cytosol in an inactive state complexed with the inhibitory IκB proteins (1-3). Activation occurs via phosphorylation of IκBα at Ser32 and Ser36 followed by proteasome-mediated degradation that results in the release and nuclear translocation of active NF-κB (3-7). IκBα phosphorylation and resulting Rel-dependent transcription are activated by a highly diverse group of extracellular signals including inflammatory cytokines, growth factors, and chemokines. Kinases that phosphorylate IκB at these activating sites have been identified (8).
    The regulation of IκBβ and IκBε is similar to that of IκB-α. However, the phosphorylation and ubiquitin-mediated degradation of these proteins occurs with much slower kinetics (9). IKK phosphorylation of IκB-β occurs at Ser19 and Ser23, while IκBε can be phosphorylated at Ser18 and Ser22 (10).

    Alternate Names

    I-kappa-B-epsilon; IkappaBepsilon; IkB-E; IkB-epsilon; IKBE; NF-kappa-B inhibitor epsilon; NF-kappa-BIE; NFKB inhibitor epsilon; NFKBIE; nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor, epsilon

    For Research Use Only. Not for Use in Diagnostic Procedures.
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