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5XU8

Crystal structure of human USP2 in complex with ubiquitin and 6-thioguanine

Summary for 5XU8
Entry DOI10.2210/pdb5xu8/pdb
DescriptorUbiquitin carboxyl-terminal hydrolase 2, Ubiquitin-40S ribosomal protein S27a, 2-amino-1,9-dihydro-6H-purine-6-thione, ... (7 entities in total)
Functional Keywordsternary complex, esi complex, hydrolase
Biological sourceHomo sapiens (Human)
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Cellular locationCytoplasm . Isoform 4: Nucleus : O75604
Ubiquitin: Cytoplasm : P62992
Total number of polymer chains2
Total formula weight50311.30
Authors
Chou, C.Y.,Chuang, S.J. (deposition date: 2017-06-22, release date: 2018-02-28, Last modification date: 2024-11-13)
Primary citationChuang, S.J.,Cheng, S.C.,Tang, H.C.,Sun, C.Y.,Chou, C.Y.
6-Thioguanine is a noncompetitive and slow binding inhibitor of human deubiquitinating protease USP2
Sci Rep, 8:3102-3102, 2018
Cited by
PubMed Abstract: Ubiquitin-specific protease 2 (USP2) belongs to the family of deubiquitinases that can rescue protein targets from proteasomal degradation by reversing their ubiquitination. In various cancers, including prostate cancer and ovarian carcinoma, upregulation of USP2 leads to an increase in the levels of deubiquitinated substrates such as fatty acid synthase, MDM2, cyclin D1 and Aurora-A. USP2 thus plays a critical role in tumor cells' survival and therefore represents a therapeutic target. Here a leukemia drug, 6-thioguanine, was found to be a potent inhibitor of USP2. Enzyme-kinetic and X-ray crystallographic data suggest that 6-thioguanine displays a noncompetitive and slow-binding inhibitory mechanism against USP2. Our study provides a clear rationale for the clinical evaluation of 6-thioguanine for USP2-upregulated cancers.
PubMed: 29449607
DOI: 10.1038/s41598-018-21476-w
PDB entries with the same primary citation
Experimental method
X-RAY DIFFRACTION (1.81 Å)
Structure validation

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