8JVL

Identification and characterization of inhibitors covalently modifying catalytic cysteine of UBE2T and blocking ubiquitin transfer


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.06 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.206 

Starting Model: experimental
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Literature

Identification and characterization of inhibitors covalently modifying catalytic cysteine of UBE2T and blocking ubiquitin transfer.

Anantharajan, J.Tan, Q.W.Fulwood, J.Sifang, W.Huang, Q.Ng, H.Q.Koh, X.Xu, W.Cherian, J.Baburajendran, N.Kang, C.Ke, Z.

(2023) Biochem Biophys Res Commun 689: 149238-149238

  • DOI: https://doi.org/10.1016/j.bbrc.2023.149238
  • Primary Citation of Related Structures:  
    8JVE, 8JVL

  • PubMed Abstract: 

    UBE2T is an E2 ubiquitin ligase critical for ubiquitination of substrate and plays important roles in many diseases. Despite the important function, UBE2T is considered as an undruggable target due to lack of a pocket for binding to small molecules with satisfied properties for clinical applications. To develop potent and specific UBE2T inhibitors, we adopted a high-throughput screening assay and two compounds-ETC-6152 and ETC-9004 containing a sulfone tetrazole scaffold were identified. Solution NMR study demonstrated the direct interactions between UBE2T and compounds in solution. Further co-crystal structures reveal the binding modes of these compounds. Both compound hydrolysation and formation of a hydrogen bond with the thiol group of the catalytic cysteine were observed. The formation of covalent complex was confirmed with mass spectrometry. As these two compounds inhibit ubiquitin transfer, our study provides a strategy to develop potent inhibitors of UBE2T.


  • Organizational Affiliation

    Experimental Drug Development Centre (EDDC), Agency for Science, Technology and Research (A*STAR), 10 Biopolis Road, #5-01, 138670, Singapore.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Ubiquitin-conjugating enzyme E2 T156Homo sapiensMutation(s): 0 
Gene Names: UBE2T
EC: 2.3.2.23
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NPD8 (Homo sapiens)
Explore Q9NPD8 
Go to UniProtKB:  Q9NPD8
PHAROS:  Q9NPD8
GTEx:  ENSG00000077152 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9NPD8
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.06 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.206 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 54.89α = 90
b = 54.89β = 90
c = 184.074γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
Aimlessdata scaling
XDSdata reduction
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Not funded--

Revision History  (Full details and data files)

  • Version 1.0: 2023-11-29
    Type: Initial release