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USP9X deubiquitinates MIB1. 3 / 3
1 | 2

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"Further, in human breast cancer cell lines, USP9X deubiquitinates and stabilizes MIB1, an activator of ligand dependent canonical NOTCH1 signaling that is important for cardiac development."

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"Therefore, we postulated that nitrosylated USP9X deubiquitinates and stabilizes MIB1 in valvular interstitial cells, which potentiates the ability of a ligand producing cell to activate NOTCH on a neighboring cell."

"USP9x in turn stimulates JAG1 activity through two mechanisms: (1) through TRB3 deubiquitination and stabilization, and (2) through deubiquitination and activation of Mind Bomb 1, an E3 ligase required for JAG1 ubiquitination-mediated endocytosis and Notch activation."