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Regulation of Proteasomal Degradation by Modulating Proteasomal Initiation Regions.


ABSTRACT: Methods for regulating the concentrations of specific cellular proteins are valuable tools for biomedical studies. Artificial regulation of protein degradation by the proteasome is receiving increasing attention. Efficient proteasomal protein degradation requires a degron with two components: a ubiquitin tag that is recognized by the proteasome and a disordered region at which the proteasome engages the substrate and initiates degradation. Here we show that degradation rates can be regulated by modulating the disordered initiation region by the binding of modifier molecules, in vitro and in vivo. These results suggest that artificial modulation of proteasome initiation is a versatile method for conditionally inhibiting the proteasomal degradation of specific proteins.

SUBMITTER: Takahashi K 

PROVIDER: S-EPMC4922138 | biostudies-literature | 2015 Nov

REPOSITORIES: biostudies-literature

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Regulation of Proteasomal Degradation by Modulating Proteasomal Initiation Regions.

Takahashi Kazunobu K   Matouschek Andreas A   Inobe Tomonao T  

ACS chemical biology 20150821 11


Methods for regulating the concentrations of specific cellular proteins are valuable tools for biomedical studies. Artificial regulation of protein degradation by the proteasome is receiving increasing attention. Efficient proteasomal protein degradation requires a degron with two components: a ubiquitin tag that is recognized by the proteasome and a disordered region at which the proteasome engages the substrate and initiates degradation. Here we show that degradation rates can be regulated by  ...[more]

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