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Structure characterization of the 26S proteasome.


ABSTRACT: In all eukaryotic cells, 26S proteasome plays an essential role in the process of ATP-dependent protein degradation. In this review, we focus on structure characterization of the 26S proteasome. Although the progress towards a high-resolution structure of the 26S proteasome has been slow, the recently solved structures of various proteasomal subcomplexes have greatly enhanced our understanding of this large machinery. In addition to having an ATP-dependent proteolytic function, the 26S proteasome is also involved in many non-proteolytic cellular activities, which are often mediated by subunits in its 19S regulatory complex. Thus, we include a detailed discussion of the structures of 19S subunits, including proteasomal ATPases, ubiquitin receptors, deubiquitinating enzymes and subunits that contain PCI domain. This article is part of a Special Issue entitled The 26S Proteasome: When degradation is just not enough!

SUBMITTER: Kim HM 

PROVIDER: S-EPMC3010250 | biostudies-literature | 2011 Feb

REPOSITORIES: biostudies-literature

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Structure characterization of the 26S proteasome.

Kim Ho Min HM   Yu Yadong Y   Cheng Yifan Y  

Biochimica et biophysica acta 20100826 2


In all eukaryotic cells, 26S proteasome plays an essential role in the process of ATP-dependent protein degradation. In this review, we focus on structure characterization of the 26S proteasome. Although the progress towards a high-resolution structure of the 26S proteasome has been slow, the recently solved structures of various proteasomal subcomplexes have greatly enhanced our understanding of this large machinery. In addition to having an ATP-dependent proteolytic function, the 26S proteasom  ...[more]

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