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Phospho-NF-KappaB p105 (Ser927) Antibody #3038

Inquiry Info. # 3038

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    Product Specifications

    REACTIVITY
    SENSITIVITY
    MW (kDa) 60 C-terminal cleavage product. 105 Full-length.
    SOURCE Rabbit

    Product Information

    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.

    Specificity / Sensitivity

    Phospho-NF-KappaB p105 (Ser927) Antibody detects NF-kappaB p105 only when phosphorylated at serine 927.

    Source / Purification

    Polyclonal antibodies are produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Ser927 of human NF-kappaB p105. Antibodies are purified by protein A and peptide affinity chromatography.

    Background

    Transcription factors of the nuclear factor κB (NF-κB)/Rel family play a pivotal role in inflammatory and immune responses (1,2). There are five family members in mammals: RelA, c-Rel, RelB, NF-κB1 (p105/p50), and NF-κB2 (p100/p52). Both p105 and p100 are proteolytically processed by the proteasome to produce p50 and p52, respectively. Rel proteins bind p50 and p52 to form dimeric complexes that bind DNA and regulate transcription. In unstimulated cells, NF-κB is sequestered in the cytoplasm by IκB inhibitory proteins (3-5). NF-κB-activating agents can induce the phosphorylation of IκB proteins, targeting them for rapid degradation through the ubiquitin-proteasome pathway and releasing NF-κB to enter the nucleus where it regulates gene expression (6-8). NIK and IKKα (IKK1) regulate the phosphorylation and processing of NF-κB2 (p100) to produce p52, which translocates to the nucleus (9-11).
    Following IKK-mediated phosphorylation of p105 NF-kappaB at multiple sites (Ser921, 923, 927, and 932) on its carboxy-terminus, SCFbeta-TrCP mediated processing produces the 50 kDa active form, p50 (10,11)

    Alternate Names

    CVID12; DKFZp686C01211; DNA binding factor KBF1; DNA-binding factor KBF1; EBP-1; KBF1; MGC54151; NF-kappa-B; NF-kappa-B1; NF-kappaB; NF-kappabeta; NF-kB; NF-kB1; NFkappaB; NFKB-p105; NFKB-p50; NFKB1; NFKB1/p105; NFKB1/p50; nuclear factor kappa B subunit 1; nuclear factor kappa-B DNA binding subunit; Nuclear factor NF-kappa-B p105 subunit; Nuclear factor NF-kappa-B p50 subunit; Nuclear factor of kappa light polypeptide gene enhancer in B-cells 1; p105; p50

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