Overview:

IKKgamma is a serine/threonine protein kinase that phosphorylates the I-kappa-B protein which is an inhibitor of the transcription factor NF-kappa-B complex. Phosphorylation of I-kappa-B protein triggers the degradation of the inhibitor via the ubiquitination pathway, thereby activating NF-kappa-B complex. IKKgamma forms dimers and trimers and interacts preferentially with IKKbeta but not IKKalpha (1). IKKgamma associates with activated ATM after the induction of DNA double-strand breaks (2). ATM phosphorylates serine-85 of IKKgamma to promote its ubiquitin-dependent nuclear export.

Gene Aliases:

IKBKG; AMCBX1; FIP-3; FIP3; Fip3p; IKK-gamma; IP; IP1; IP2; IPD2; NEMO

Genbank Number:

NM_003639

References:

1. Rothwarf, D. M. et al: IKK-gamma is an essential regulatory subunit of the I-kappa-B kinase complex. Nature 395: 297-300, 1998.

2. Wu, Z-H. et al: Molecular linkage between the kinase ATM and NF-kappaB signaling in response to genotoxic stimuli. Science 311: 1141-1146, 2006.