IndraLab
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"Recently, UBE2E1 was shown to autoubiquitinate itself in vitro in the presence or absence of the E3 ligase, RNF4 (30, 31), raising the possibility that OTUB1 may stabilize UBE2E1 by preventing autoubiquitination.To test the hypothesis that OTUB1 may directly inhibit UBE2E1, we assayed the autoubiquitinating activity of UBE2E1 in the presence and absence of OTUB1 in vitro."