Solution structure of the proteasome ubiquitin receptor Rpn13

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 31 
  • Selection Criteria: structures with the lowest energy 

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This is version 1.4 of the entry. See complete history


Structure of Proteasome Ubiquitin Receptor hRpn13 and Its Activation by the Scaffolding Protein hRpn2.

Chen, X.Lee, B.H.Finley, D.Walters, K.J.

(2010) Mol Cell 38: 404-415

  • DOI: https://doi.org/10.1016/j.molcel.2010.04.019
  • Primary Citation of Related Structures:  
    2KQZ, 2KR0

  • PubMed Abstract: 

    Rpn13 is a subunit of the proteasome that serves as a receptor for both ubiquitin and Uch37, one of the proteasome's three deubiquitinating enzymes. We have determined the structure of full-length human Rpn13 (hRpn13). Unexpectedly, Rpn13's ubiquitin- and Uch37-binding domains pack against each other when it is not incorporated into the proteasome. This intramolecular interaction reduces hRpn13's affinity for ubiquitin. We find that hRpn13 binding to the proteasome scaffolding protein hRpn2/S1 abrogates its interdomain interactions, thus activating hRpn13 for ubiquitin binding. hRpn13's Uch37-binding domain, a previously unknown fold, contains nine alpha helices. We have mapped its Uch37-binding surface to a region rich in charged amino acids. Altogether, our results provide mechanistic insights into hRpn13's functional activities with Uch37 and ubiquitin and suggest that its role as a ubiquitin receptor is finely tuned for proteasome targeting.

  • Organizational Affiliation

    Department of Biochemistry, University of Minnesota, Minneapolis, MN 55455, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Proteasomal ubiquitin receptor ADRM1411Homo sapiensMutation(s): 0 
Gene Names: ADRM1GP110
UniProt & NIH Common Fund Data Resources
Find proteins for Q16186 (Homo sapiens)
Explore Q16186 
Go to UniProtKB:  Q16186
GTEx:  ENSG00000130706 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ16186
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 31 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-05-26
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2015-12-23
    Changes: Structure summary
  • Version 1.3: 2017-11-29
    Changes: Derived calculations
  • Version 1.4: 2024-05-01
    Changes: Data collection, Database references