Ubiquitin Chains Are Remodeled at the Proteasome by Opposing Ubiquitin Ligase and Deubiquitinating Activities

Bernat Crosas, John Hanna, Donald S. Kirkpatrick, Dan Phoebe Zhang, Yoshiko Tone, Nathaniel A A. Hathaway, Christa Buecker, David S. Leggett, Marion Schmidt, Randall W. King, Steven P P. Gygi, Daniel Finley