IndraLab

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USP4 deubiquitinates E3_Ub_ligase. 4 / 4
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"USP4 interacts with and deubiquitylates another E3 ubiquitin ligase for p53, ARF-BP1/Mule/HUWE, leading to the stabilization of ARF-BP1 and subsequent reduction of p53 levels."
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"In contrast to USP2a, USP4 deubiquitinates and stabilizes a different E3 that ubiquitinates p53 called ARF-BP1, thereby destabilizing p53 [XREF_BIBR]."
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"USP4 also regulates p53 stability via direct deubiquitination of the E3 ARF-BP1 [179] ."
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"In the cytosol, USP4 deubiquitinates the member of many vital cell signaling pathways, e.g., NF-κB [77], TGF-β [54], Wnt/β-catenin [78], and p53 [79] as well as adenosine A2A receptor [80] and the E3 ligase TRIM21 [81]."
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