Purified 60-70%. Peptide (CQYQAPDMDTLQIHVME) corresponding to amino acids 400 to 416 of human IKKg (1,2), which are identical to those of mouse homologue (2). Nuclear factor kappa B (NF-kB) is a ubiquitous transcription factor and an essential mediator of gene expression during activation of immune and in?ammatory responses. NF-kB mediates the expression of a great variety of genes in response to extracellular stimuli. NF-kB is associated with IkB proteins in the cell cytoplasm, which inhibit NF-kB activity. The IkB kinase (IKKa and IKKb) phosphorylates IkB and mediates NF-kB activation. A novel molecule in the IKK complex was recently identi?ed and termed IKKg/NEMO/FIP3/IKKAP1 (1-5). IKKg interacts with IKKb and is required for the activation of IKK complex and NF-kB by LPS, PMA, TNF, and IL-1 stimulation (1-4). FIP3 was also shown to bind to RIP and NIK and to mediate TNF-induced NF-kB activation(3). Applications: Suitable for use in ELISA and Western Blot.