Control peptide for N2302-02. The transcription factor NFkB is widely recognized as a critical mediator of immune and inflammatory responses. In most cell types, NFkB is found in the cytoplasm where it is associated with an inhibitory protein known as IkB. An impressive variety of stimuli (tumor necrosis factor, interleukin 1, T-cell activation signals, bacterial endotoxins, viral transforming proteins, certain growth factors and reactive oxygen intermediates) lead to the rapid nuclear accumulation of NFkB by the induced phosphorylation and subsequent degradation of IkB. In the nucleus, NFkB regulates genes encoding cytokines, cytokine receptors, cell adhesion molecules, proteins involved in coagulation and genes involved in cell growth control. NFkB is thought to be an important transcriptional regulator for HIV. Growing evidence indicates that the dysregulation of NFkB may be key to a number of diseases including arthritis and other inflammatory diseases, Alzheimers disease, atherosclerosis and cancer. NFkB is formed through the association of multiple subunits, either as a homodimer or heterodimer. Subunits have been identified as p50 (NFkB1), p65 (RelA), c-Rel, RelB and p52 (NFkB2). The classic NFkB form exists as a p50-p65 heterodimer and predominates in many cell types. Many of the possible combinatorial forms of homo- and heterodimers have been identified. Growing evidence indicates that different forms of NFkB have different functions in cells. Interestingly, both the p50 and p52 subunits are derived from the precursor proteins p105 and p100 respectively. Each contain multiple copies of the so-called ankyrin repeat at their C-termini. Nuclear translocation of NFkB is confirmed by the use of electrophorectic mobility shift assays or by Immunoblot with nuclear extracts. The subunit composition of NFkB is confirmed by the use of antibodies that supershift the DNA/protein complex. Applications: Suitable for use in Antibody blocking. Other applications not tested. Recommended Dilution: Antibody Blocking: 1ug control peptide per 1ul of antiserum per assay. Optimal dilution to be determined by researcher. Storage and Stability: May be stored at 4C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20C. Aliquots are stable for at least 6 months at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Purity:
Higly purified ( 95%).
Form:
Supplied as a liquid, 0.01% sodium azide.
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