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Reverse thiophosphorylase activity of a glycoside phosphorylase in the synthesis of an unnatural Manβ1,4GlcNAc library

Reverse thiophosphorylase activity of a glycoside phosphorylase in the synthesis of an unnatural Manβ1,4GlcNAc library
Reverse thiophosphorylase activity of a glycoside phosphorylase in the synthesis of an unnatural Manβ1,4GlcNAc library
β-Mannosides are ubiquitous in nature, with diverse roles in many biological processes. Notably, Manβ1,4GlcNAc a constituent of the core N-glycan in eukaryotes was recently identified as an immune activator, highlighting its potential for use in immunotherapy. Despite their biological significance, the synthesis of β-mannosidic linkages remains one of the major challenges in glycoscience. Here we present a chemoenzymatic strategy that affords a series of novel unnatural Manβ1,4GlcNAc analogues using the β-1,4-D-mannosyl-N-acetyl-D-glucosamine phosphorylase, BT1033. We show that the presence of fluorine in the GlcNAc acceptor facilitates the formation of longer β-mannan-like glycans. We also pioneer a “reverse thiophosphorylase” enzymatic activity, favouring the synthesis of longer glycans by catalysing the formation of a phosphorolysis-stable thioglycoside linkage, an approach that may be generally applicable to other phosphorylases.
1478-6524
11638-11646
Keenan, Tessa
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Hatton, Natasha E.
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Porter, Jack
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Vendeville, Jean-Baptiste
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Wheatley, David
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Ghirardello, Mattia
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Wahart, Alice. J.C.
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Ahmadipour, Sanaz
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Walton, Julia
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Galan, M. Carmen
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Linclau, Bruno
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Miller, Gavin J.
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Fascione, Martin A.
4262658b-34bc-400a-8ec8-8e2e537b2af5
Keenan, Tessa
2480c679-d88c-421b-b697-188a5fa60bcd
Hatton, Natasha E.
af7868c2-d0b2-42a9-a7cc-7532ce02eb0b
Porter, Jack
8c6d6830-ea69-4ea9-8cf3-bf5ef520236e
Vendeville, Jean-Baptiste
2cc41dac-e337-4dc1-828c-048005d515b5
Wheatley, David
259931a5-d5a7-4400-80c9-2a7e8d161a74
Ghirardello, Mattia
5d17c40e-c7d7-4ae2-8272-255402013d67
Wahart, Alice. J.C.
1d2ed5e0-3e11-400c-9b05-132ea5194ecd
Ahmadipour, Sanaz
8004d237-1325-4de9-ae1d-f2547a954739
Walton, Julia
7598bf89-4d4b-4cb9-a065-779ee7bf00d1
Galan, M. Carmen
8c06f4d9-ba6d-4c76-8199-736abab1a7e3
Linclau, Bruno
19b9cacd-b8e8-4c65-af36-6352cade84ba
Miller, Gavin J.
f4715520-c44f-4db9-82ef-c062ae8dba62
Fascione, Martin A.
4262658b-34bc-400a-8ec8-8e2e537b2af5

Keenan, Tessa, Hatton, Natasha E., Porter, Jack, Vendeville, Jean-Baptiste, Wheatley, David, Ghirardello, Mattia, Wahart, Alice. J.C., Ahmadipour, Sanaz, Walton, Julia, Galan, M. Carmen, Linclau, Bruno, Miller, Gavin J. and Fascione, Martin A. (2023) Reverse thiophosphorylase activity of a glycoside phosphorylase in the synthesis of an unnatural Manβ1,4GlcNAc library. Chemical Science, 14 (42), 11638-11646. (doi:10.1039/d3sc04169g).

Record type: Article

Abstract

β-Mannosides are ubiquitous in nature, with diverse roles in many biological processes. Notably, Manβ1,4GlcNAc a constituent of the core N-glycan in eukaryotes was recently identified as an immune activator, highlighting its potential for use in immunotherapy. Despite their biological significance, the synthesis of β-mannosidic linkages remains one of the major challenges in glycoscience. Here we present a chemoenzymatic strategy that affords a series of novel unnatural Manβ1,4GlcNAc analogues using the β-1,4-D-mannosyl-N-acetyl-D-glucosamine phosphorylase, BT1033. We show that the presence of fluorine in the GlcNAc acceptor facilitates the formation of longer β-mannan-like glycans. We also pioneer a “reverse thiophosphorylase” enzymatic activity, favouring the synthesis of longer glycans by catalysing the formation of a phosphorolysis-stable thioglycoside linkage, an approach that may be generally applicable to other phosphorylases.

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Accepted/In Press date: 28 August 2023
e-pub ahead of print date: 29 September 2023
Published date: 29 September 2023
Additional Information: Funding Information: MAF thanks UKRI (EP/X023680/1) for project grant funding. UK Research and Innovation (UKRI, Future Leaders Fellow-ship, MR/T019522/1) and the Engineering and Physical Sciences Research Council (EP/P000762/1) are thanked for project grant funding to GJM. Keele University are thanked for PhD studentship funding to AW and JP. BL thanks EPSRC core capability funding EP/K039466/1. MCG thanks Cancer Research UK (grant number C30758/A2979) and European Research Council (ERC-COG GLYCOTOOLS 648239). MAF, BL and MCG are grateful to the Industrial Biotechnology Catalyst (Innovate UK, BBSRC, EPSRC) to support the translation, development and commercialization of innovative Industrial Biotechnology processes: BB/M028941/1, BB/M02847X/1, BB/M028976/1. We thank Dr Ed Bergstrom and The York Center of Excellence in Mass Spectrometry was created thanks to a major capital investment through Science City York, supported by Yorkshire Forward with funds from the Northern Way Initiative, and subsequent support from EPSRC (EP/K039660/1; EP/M028127/1). We thank Dr Alex Heyam for discussions around the IPAP NMR experiments. Publisher Copyright: © 2023 The Royal Society of Chemistry

Identifiers

Local EPrints ID: 485395
URI: http://eprints.soton.ac.uk/id/eprint/485395
ISSN: 1478-6524
PURE UUID: d8e344e6-a2f2-4573-a930-430037aeba85
ORCID for Bruno Linclau: ORCID iD orcid.org/0000-0001-8762-0170

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Date deposited: 05 Dec 2023 17:57
Last modified: 06 Jun 2024 01:38

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Contributors

Author: Tessa Keenan
Author: Natasha E. Hatton
Author: Jack Porter
Author: Jean-Baptiste Vendeville
Author: David Wheatley
Author: Mattia Ghirardello
Author: Alice. J.C. Wahart
Author: Sanaz Ahmadipour
Author: Julia Walton
Author: M. Carmen Galan
Author: Bruno Linclau ORCID iD
Author: Gavin J. Miller
Author: Martin A. Fascione

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