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An important adaptation of cells to proteasome inhibition is the induction of new proteasomes via the transcription factor Nrf1 [1,2], which is produced as a precursor bound to the endoplasmic reticulum (ER) through its amino terminus. Nrf1 was reported to require proteolytic processing to enter the nucleus [3]. Increased proteasome production is induced by low concentrations of proteasome inhibitors...
Proteasome inhibitors are widely used in the treatment of multiple myeloma and as research tools. Additionally, diminished proteasome function may contribute to neuronal dysfunction. In response to these inhibitors, cells enhance the expression of proteasome subunits by the transcription factor Nrf1. Here, we investigate the mechanisms by which decreased proteasome function triggers production of...
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