2MUU

The Proteolytic Activity of Ubiquitin-specific Protease 28 Is Modulated by the N-terminal Domain


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 14 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


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Literature

The N-terminal ubiquitin-binding region of ubiquitin-specific protease 28 modulates its deubiquitination function: NMR structural and mechanistic insights.

Wen, Y.Shi, L.Ding, Y.Cui, R.He, W.T.Hu, H.Y.Zhang, N.

(2015) Biochem J 471: 155-165

  • DOI: https://doi.org/10.1042/BJ20150088
  • Primary Citation of Related Structures:  
    2MUU

  • PubMed Abstract: 

    The deubiquitinase ubiquitin-specific protease 28 (Usp28) contains a ubiquitin-binding region (UBR) composed of one ubiquitin-associated domain (UBA) and one ubiquitin-interacting motif (UIM) at its N-terminus. It is of interest that an additional small ubiquitin-like modifier (SUMO)-interacting motif (SIM) is located next to its UIM. To date, the functional role of the Usp28 UBR is still not understood. To elucidate the regulatory mechanism of the UBR on the full functional display of Usp28, in the present study, NMR and biochemical approaches were applied. The solution structure of Usp28 UBR was obtained, and the key residues responsible for ubiquitin and SUMO1/2 recognition were identified. In addition, we find that the ubiquitin-binding ability of Usp28 UBR was required for full enzymatic activity of Usp28, whereas binding of SUMO1/2 impaired the catalytic activity of the enzyme by competitively blocking its interactions with ubiquitin substrates. Our findings provide a first insight into understanding how the enzymatic activity of Usp28 is regulated by its non-catalytic UBR and endogenous ligands.


  • Organizational Affiliation

    Department of Analytical Chemistry, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Ubiquitin carboxyl-terminal hydrolase 28137Homo sapiensMutation(s): 0 
Gene Names: USP28KIAA1515
EC: 3.4.19.12
UniProt & NIH Common Fund Data Resources
Find proteins for Q96RU2 (Homo sapiens)
Explore Q96RU2 
Go to UniProtKB:  Q96RU2
PHAROS:  Q96RU2
GTEx:  ENSG00000048028 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ96RU2
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 14 
  • 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: 2016-04-20
    Type: Initial release