IKK gamma-Knockout HeLa Cell Lysate

IKK-gamma, also known as NEMO or IKBKG, is a key regulatory protein with a molecular weight of approximately 46-50 kDa. Its structure is characterized by coiled-coil domains, enabling it to form a tetramer that functions as a molecular scaffold. The core biological function of Ikk-gamma is to serve as an essential regulatory subunit of the IKK kinase complex; it is responsible for receiving upstream signals and facilitating the assembly and activation of the complex. Within signaling pathways, Ikk-gamma orchestrates the activation of the canonical NF-κB pathway: upon cellular stimulation by agents such as TNFα or LPS, Ikk-gamma recognizes ubiquitination signals, leading to IKK complex activation. This, in turn, triggers the phosphorylation and subsequent degradation of the inhibitory protein IκB, ultimately releasing the NF-κB transcription factor for nuclear translocation. This process initiates the expression of genes involved in immunity, inflammation, and cell survival. Given its pivotal role, mutations in its gene can lead to immune disorders such as NEMO deficiency syndrome, and its dysregulation is intimately linked to cancer and chronic inflammatory diseases.