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Prasch H, Wolfsgruber A, Thonhofer M, Culum A, Mandl C, Weber P, Zündel M, Nasseri SA, Gonzalez Santana A, Tegl G, Nidetzky B, Gruber K, Stütz AE, Withers SG, Wrodnigg TM. Ligand-Directed Chemistry on Glycoside Hydrolases - A Proof of Concept Study. Chembiochem 2023; 24:e202300480. [PMID: 37715738 DOI: 10.1002/cbic.202300480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/11/2023] [Accepted: 09/14/2023] [Indexed: 09/18/2023]
Abstract
Selective covalent labelling of enzymes using small molecule probes has advanced the scopes of protein profiling. The covalent bond formation to a specific target is the key step of activity-based protein profiling (ABPP), a method which has become an indispensable tool for measuring enzyme activity in complex matrices. With respect to carbohydrate processing enzymes, strategies for ABPP so far involve labelling the active site of the enzyme, which results in permanent loss of activity. Here, we report in a proof of concept study the use of ligand-directed chemistry (LDC) for labelling glycoside hydrolases near - but not in - the active site. During the labelling process, the competitive inhibitor is cleaved from the probe, departs the active site and the enzyme maintains its catalytic activity. To this end, we designed a building block synthetic concept for small molecule probes containing iminosugar-based reversible inhibitors for labelling of two model β-glucosidases. The results indicate that the LDC approach can be adaptable for covalent proximity labelling of glycoside hydrolases.
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Affiliation(s)
- Herwig Prasch
- Graz University of Technology, Institute of Chemistry and Technology of Biobased Systems, Stremayrgasse 9, 8010, Graz, Austria
| | - Andreas Wolfsgruber
- Graz University of Technology, Institute of Chemistry and Technology of Biobased Systems, Stremayrgasse 9, 8010, Graz, Austria
| | - Martin Thonhofer
- Graz University of Technology, Institute of Chemistry and Technology of Biobased Systems, Stremayrgasse 9, 8010, Graz, Austria
| | - André Culum
- Graz University of Technology, Institute of Chemistry and Technology of Biobased Systems, Stremayrgasse 9, 8010, Graz, Austria
| | - Christoph Mandl
- Graz University of Technology, Institute of Chemistry and Technology of Biobased Systems, Stremayrgasse 9, 8010, Graz, Austria
| | - Patrick Weber
- Graz University of Technology, Institute of Chemistry and Technology of Biobased Systems, Stremayrgasse 9, 8010, Graz, Austria
| | - Melanie Zündel
- Graz University of Technology, Institute of Chemistry and Technology of Biobased Systems, Stremayrgasse 9, 8010, Graz, Austria
| | - Seyed A Nasseri
- University of British Columbia, Department of Chemistry, 2036 Main Mall, Vancouver, BC, V6T 1Z1, Canada
| | - Andres Gonzalez Santana
- University of British Columbia, Department of Chemistry, 2036 Main Mall, Vancouver, BC, V6T 1Z1, Canada
| | - Gregor Tegl
- Graz University of Technology, Institute of Biotechnology and Biochemical Engineering, Petersgasse 10-12/I, 8010, Graz, Austria
| | - Bernd Nidetzky
- Graz University of Technology, Institute of Biotechnology and Biochemical Engineering, Petersgasse 10-12/I, 8010, Graz, Austria
| | - Karl Gruber
- University of Graz, Institute of Molecular Bioscience, Humboldtstraße 50/III, 8010, Graz, Austria
| | - Arnold E Stütz
- Graz University of Technology, Institute of Chemistry and Technology of Biobased Systems, Stremayrgasse 9, 8010, Graz, Austria
| | - Stephen G Withers
- University of British Columbia, Department of Chemistry, 2036 Main Mall, Vancouver, BC, V6T 1Z1, Canada
| | - Tanja M Wrodnigg
- Graz University of Technology, Institute of Chemistry and Technology of Biobased Systems, Stremayrgasse 9, 8010, Graz, Austria
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