IndraLab
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"For example, MDM2 can directly bind to p53 to inhibit its transcriptional activity; quickly enhance the ubiquitination and degradation of p53 through ubiquitin-E3 ligase; and promote p53 degradation by blocking p53 's transport from the nucleus to the cytoplasm XREF_BIBR XREF_BIBR."
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"102 In cells containing wild-type p53 and subjected to various stimuli, p53 normally transcribes the MDM2 gene to produce MDM2 protein, and in turn, the binding of MDM2 to p53 directly inhibits p53 function.102 Notably, MDM2 expression is abnormally upregulated in different cancer types."