Usami M, Ando K, Shibuya A, Takasawa R, Yokoyama H. Crystal structures of human glyoxalase I and its complex with
TLSC702 reveal inhibitor binding mode and substrate preference.
FEBS Lett 2022;
596:1458-1467. [PMID:
35363883 DOI:
10.1002/1873-3468.14344]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/25/2022] [Accepted: 03/25/2022] [Indexed: 11/11/2022]
Abstract
Human glyoxalase I (hGLO I) is an enzyme for detoxification of methylglyoxal (MG), and has been considered an attractive target for the development of new anti-cancer drugs. In our previous report, the GLO I inhibitor TLSC702 induced apoptosis in tumor cells. Here, we determined the crystal structures of hGLO I and its complex with TLSC702. In the complex, the carboxy O atom of TLSC702 is coordinated to Zn2+ , and TLSC702 mainly shows van der Waals interaction with hydrophobic residues. In the inhibitor-unbound structure, glycerol, which has similar functional groups to MG, was bound to Zn2+ , indicating that GLO I can easily bind to MG. This study provides a structural basis to develop better anticancer drugs.
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