IKK-α is a member of the serine/threonine protein kinase family and forms a complex in the cell with IKK-βand NEMO. NF-κB transcription factors are normally held in an inactive state by the inhibitory proteins IκBs. IKK-α and IKK-β phosphorylate the IκB proteins, marking them for degradation via ubiquitination and allowing NF-κB transcription factors to go into the nucleus.
Once activated, NF-κB transcription factors regulate genes that are implicated in many important cellular processes, including immune response, inflammation, cell death, and cell proliferation.
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