 
            IndraLab
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                                  "The prolyl isomerase Pin1 and deubiquitinase USP21 have been suggested to stabilize Nanog in ESCs by preventing its degradation through the UPS 18,21-23. Immunoblotting analysis revealed that ectopic expression of USP21, but not Pin1, significantly enhanced the protein level of Nanog in HuH7 cells (Figure 7A)."
          
                              
          
                               
                            
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                                  "Co-immunoprecipitation assays showed that N-domain and H-domain of Nanog were required for its interaction with KLF15 (Fig. 4K)Furthermore, rescue experiments were performed in PDAC cells when USP21 is co-overexpressed with KLF15, western blot assay showed in double overexpressed KLF15- USP21 cells, the complement of USP21 restored the expression of Nanog (Fig. S6A-B)."