Nature Communications (Oct 2021)

The 20S as a stand-alone proteasome in cells can degrade the ubiquitin tag

  • Indrajit Sahu,
  • Sachitanand M. Mali,
  • Prasad Sulkshane,
  • Cong Xu,
  • Andrey Rozenberg,
  • Roni Morag,
  • Manisha Priyadarsini Sahoo,
  • Sumeet K. Singh,
  • Zhanyu Ding,
  • Yifan Wang,
  • Sharleen Day,
  • Yao Cong,
  • Oded Kleifeld,
  • Ashraf Brik,
  • Michael H. Glickman

DOI
https://doi.org/10.1038/s41467-021-26427-0
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 21

Abstract

Read online

The 20S particle is part of the 26S proteasome, but also exists as a free complex. Here, the authors outline signature activities of the 20S and combine chemical, structural, functional and proteomic assays to show that the 20S can degrade ubiquitin tags along with conjugated substrates.