Journal
FEBS LETTERS
Volume 589, Issue 8, Pages 933-940Publisher
WILEY
DOI: 10.1016/j.febslet.2015.02.025
Keywords
Proteasome; Transcriptional regulation; Rpn4
Funding
- Ministry of Education, Culture, Sports, Science, and Technology in Japan
- Grants-in-Aid for Scientific Research [26000014] Funding Source: KAKEN
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The proteasome is an essential, 66-subunit protease that mediates ubiquitin-dependent proteolysis. The transcription factor Rpn4 regulates concerted expression of proteasome subunits to increase the proteasome by recognizing nonamer proteasome-associated control element (PACE) elements on the promoter regions. However, the genes for proteasome assembly chaperones and some of the subunits have no PACEs. Here we identified a minimal hexamer PACE-core'' sequence that responds to Rpn4. PACE-cores are found in many genes related to proteasome function including the assembly chaperones, but cannot substitute for PACE of the subunits. Our results add a new layer of complexity in transcriptional regulation of genes involved in protein degradation. (C) 2015 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
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