IndraLab

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USP20 deubiquitinates CLSPN. 11 / 11
1 | 10

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"USP20 deubiquitinates and stabilizes Claspin."

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"USP20 deubiquitinates and stabilizes Claspin, which in turn facilitate the activation of cell-cycle checkpoint following DNA damage."

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"To determine whether USP20 directly deubiquitinates Claspin, we performed an in vitro deubiquitination assay."

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"CLASPIN was also deubiquitinated by bacterially produced GST-USP20, but not by the catalytically inactive mutant GST USP20 (C154S), in the in vitro deubiquitination assays."

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"These results revealed that USP20 mediated Claspin downregulation did not occur at the gene transcription level, just as the prior study reported that USP20 deubiquitinate and stabilize Claspin."

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"USP20 in turn deubiquitinates and stabilizes Claspin and enhances the activation of ATR-Chk1 signaling."

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"Next, we tested whether USP20 deubiquitinates Claspin."

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"These results suggest that USP20 deubiquitinates Claspin in cells."

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"Unbound USP20 is enzymatically active and mediates Claspin deubiquitination and stabilization, this way promoting Chk1 activation [49,50]."

"USP20 in turn deubiquitinates and stabilizes Claspin and enhances the activation of ATR-Chk1 signaling."

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"Taken together, these results suggest that USP20 deubiquitinates Claspin both in vitro and in vivo."