The ubiquitin-proteasome system and activation of NF-κB: involvement of the ubiquitin ligase KPC1 in p105 processing and tumor suppression.
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ABSTRACT: The p50 subunit of nuclear factor-kappa B (NF-κB) is generated from processing of the p105 precursor. We identified KIP1 ubiquitination-promoting complex 1 (KPC1) as the ubiquitin (Ub) ligase mediating this process. Overexpression of KPC1 results in tumor suppression, probably due to the generation of p50-p50 homodimers. It appears that high levels of KPC1 and nuclear p50 are important for maintaining the non-malignant state.
SUBMITTER: Kravtsova-Ivantsiv Y
PROVIDER: S-EPMC4905413 | biostudies-other | 2015 Oct-Dec
REPOSITORIES: biostudies-other
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