Product Information
IκBα (L35A5) Mouse mAb (Amino-terminal Antigen) #4814 is produced by immunizing mice with a GST-IκBα fusion protein corresponding the amino-terminus of human IκBα. Phospho-IκBα (Ser32/36) (5A5) Mouse mAb #9246 is produced by immunizing mice with a synthetic phosphopeptide corresponding to residues surrounding Ser32/36 of human IκBα. Total cell extracts from HeLa cells prepared without treatment serve as a negative control. Supplied in SDS Sample Buffer. Total cell extracts from HeLa cells prepared with TNF-α treatment (#2169, 20 ng/ml for 5 minutes) serve as a positive control. Supplied in SDS Sample Buffer.
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).
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STRING - Known and Predicted Protein-Protein Interactions.
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