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NF-κB-Dependent and -Independent (Moonlighting) IκBα Functions in Differentiation and Cancer.

Lluís EspinosaLaura Marruecos
Published in: Biomedicines (2021)
IκBα is considered to play an almost exclusive role as inhibitor of the NF-κB signaling pathway. However, previous results have demonstrated that SUMOylation imposes a distinct subcellular distribution, regulation, NF-κB-binding affinity and function to the IκBα protein. In this review we discuss the main alterations of IκBα found in cancer and whether they are (most likely) associated with NF-κB-dependent or NF-κB-independent (moonlighting) activities of the protein.
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