Proceedings of the Japan Academy, Series B
Online ISSN : 1349-2896
Print ISSN : 0386-2208
ISSN-L : 0386-2208
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Volume 94, Issue 8
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Review
  • Transcriptional regulation of the 26S proteasome by Nrf1
    Shun KOIZUMI, Jun HAMAZAKI, Shigeo MURATA
    2018 Volume 94 Issue 8 Pages 325-336
    Published: October 11, 2018
    Released on J-STAGE: October 11, 2018
    DOIhttps://doi.org/10.2183/pjab.94.021
    JOURNAL FREE ACCESS FULL-TEXT HTML
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    The 26S proteasome is a large protease complex that selectively degrades ubiquitinated proteins. It comprises 33 distinct subunits, each of which differ in function and structure, and which cannot be substituted by the other subunits. Owing to its complicated structure, the biogenesis of the 26S proteasome is elaborately regulated at the transcription, translation, and molecular assembly levels. Recent studies revealed that Nrf1 (NFE2L1) is a transcription factor that upregulates the expression of all the proteasome subunit genes in a concerted manner, especially during proteasome impairment in mammalian cells. In this review, we summarize current knowledge regarding the transcriptional regulation of the proteasome and recent findings concerning the regulation of Nrf1 transcription activity.

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