7ms7 | pdb_00007ms7

Structure of USP5 zinc-finger ubiquitin binding domain co-crystallized with (5-((4-(4-chlorophenyl)piperidin-1-yl)sulfonyl)picolinoyl)glycine

spinqualitylabelsall models 7ms7, resolution 1.45Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 7ms7 is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.45Å Ligands: ACT, EDO, ZN, ZQ1 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function UBP5_HUMAN Cleaves linear and branched multiubiquitin polymers with a marked preference for branched polymers. Involved in unanchored 'Lys-48'-linked polyubiquitin disassembly. Binds linear and 'Lys-63'-linked polyubiquitin with a lower affinity. Knock-down of USP5 causes the accumulation of p53/TP53 and an increase in p53/TP53 transcriptional activity because the unanchored polyubiquitin that accumulates is able to compete with ubiquitinated p53/TP53 but not with MDM2 for proteasomal recognition. Publication Abstract from PubMed USP5 is a deubiquitinase that has been implicated in a range of diseases, including cancer, but no USP5-targeting chemical probe has been reported to date. Here, we present the progression of a chemical series that occupies the C-terminal ubiquitin-binding site of a poorly characterized zinc-finger ubiquitin binding domain (ZnF-UBD) of USP5 and competitively inhibits the catalytic activity of the enzyme. Exploration of the structure-activity relationship, complemented with crystallographic characterization of the ZnF-UBD bound to multiple ligands, led to the identification of 64, which binds to the USP5 ZnF-UBD with a KD of 2.8 muM and is selective over nine proteins containing structurally similar ZnF-UBD domains. 64 inhibits the USP5 catalytic cleavage of a di-ubiquitin substrate in an in vitro assay. This study provides a chemical and structural framework for the discovery of a chemical probe to delineate USP5 function in cells. Structure-Activity Relationship of USP5 Inhibitors.,Mann MK, Zepeda-Velazquez CA, Gonzalez-Alvarez H, Dong A, Kiyota T, Aman AM, Loppnau P, Li Y, Wilson B, Arrowsmith CH, Al-Awar R, Harding RJ, Schapira M J Med Chem. 2021 Oct 14. doi: 10.1021/acs.jmedchem.1c00889. PMID:34648286 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Thioesterase 3D structures

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