Author: ["Susana Llanos","Paula A. Clark","Janice Rowe","Gordon Peters"]
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Abstract
The alternative product of the human INK4a/ARF locus, p14ARF, has the potential to act as a tumour suppressor by binding to and inhibiting the p53 antagonist MDM2. Current models propose that ARF function depends on its ability to sequester MDM2 in the nucleolus. Here we describe situations in which stabilization of MDM2 and p53 occur without relocalization of endogenous MDM2 from the nucleoplasm. Conversely, forms of ARF that do not accumulate in the nucleolus retain the capacity to stabilize MDM2 and p53. We therefore propose that nucleolar localization is not essential for ARF function but may enhance the availability of ARF to inhibit MDM2.Cite this article
Llanos, S., Clark, P., Rowe, J. et al. Stabilization of p53 by p14ARF without relocation of MDM2 to the nucleolus. Nat Cell Biol 3, 445–452 (2001). https://doi.org/10.1038/35074506 