Darby, John F. orcid.org/0000-0003-2754-6348, Gilio, Amelia K., Piniello, Beatriz et al. (6 more authors) (2020) Substrate Engagement and Catalytic Mechanisms of N-Acetylglucosaminyltransferase v. ACS Catalysis. pp. 8590-8596. ISSN 2155-5435
Abstract
α-Mannoside β-1,6-N-acetylglucosaminyltransferase V (MGAT5) is a mammalian glycosyltransferase involved in complex N-glycan formation, which strongly drives cancer when overexpressed. Despite intense interest, the catalytic mechanism of MGAT5 is not known in detail, precluding therapeutic exploitation. We solved structures of MGAT5 complexed to glycosyl donor and acceptor ligands, revealing an unforeseen role for donor-induced loop rearrangements in controlling acceptor substrate engagement. QM/MM metadynamics simulations of MGAT5 catalysis highlight the key assisting role of Glu297 and reveal considerable conformational distortions imposed upon the glycosyl donor during transfer. Detailed mechanistic characterization of MGAT5 will aid inhibitor development to correct cancer-associated N-glycosylation.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 American Chemical Society |
Keywords: | carbohydrates,enzymes,glycosyltransferases,N-glycosylation,quantum mechanics/molecular mechanics |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Chemistry (York) |
Funding Information: | Funder Grant number EUROPEAN COMMISSION 322942 BBSRC (BIOTECHNOLOGY AND BIOLOGICAL SCIENCES RESEARCH COUNCIL) BB/N008332/1 THE ROYAL SOCIETY RSRP\R\210004 |
Depositing User: | Pure (York) |
Date Deposited: | 30 Sep 2020 14:30 |
Last Modified: | 25 Jan 2025 00:10 |
Published Version: | https://doi.org/10.1021/acscatal.0c02222 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1021/acscatal.0c02222 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:166211 |
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Filename: acscatal.0c02222.pdf
Description: Substrate Engagement and Catalytic Mechanisms of N‑Acetylglucosaminyltransferase V
Licence: CC-BY 2.5