Synthesis of C6-modified mannose 1-phosphates and evaluation of derived sugar nucleotides against GDP‑mannose dehydrogenase

  1. Sanaz AhmadipourORCID Logo,
  2. Alice J C Wahart,
  3. Jonathan P DolanORCID Logo,
  4. Laura BeswickORCID Logo,
  5. Chris S Hawes,
  6. Robert A FieldORCID Logo and
  7. Gavin J MillerORCID Logo

Submitting author affiliation: Keele University, Keele, United Kingdom

Beilstein Arch. 2022, 202257. https://doi.org/10.3762/bxiv.2022.57.v1

Published 04 Jul 2022

  • Preprint

Abstract

Sufferers of cystic fibrosis are at significant risk of contracting chronic bacterial lung infections. The dominant pathogen in these cases is mucoid Pseudomonas aeruginosa. Such infections are characterised by overproduction of the exopolysaccharide alginate. We present herein the design and chemoenzymatic synthesis of sugar nucleotide tools to probe a critical enzyme within alginate biosynthesis, GDP-mannose dehydrogenase (GMD). We first synthesise C6-modified glycosyl 1-phosphates, incorporating 6-amino, 6-chloro and 6-sulfhydryl groups, followed by their evaluation as substrates for enzymatic pyrophosphorylative coupling. The development of this methodology enables access to GDP 6-chloro-6-deoxy-D-mannose and its evaluation against GMD.

Keywords: Enzymatic synthesis; sugar nucleotide; chemical probe; alginate; GDP-mannose dehydrogenase; glycosyl 1-phosphate

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When a peer-reviewed version of this preprint is available, this information will be updated in the information box above. If no peer-reviewed version is available, please cite this preprint using the following information:

Ahmadipour, S.; Wahart, A. J. C.; Dolan, J. P.; Beswick, L.; Hawes, C. S.; Field, R. A.; Miller, G. J. Beilstein Arch. 2022, 202257. doi:10.3762/bxiv.2022.57.v1

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© 2022 Ahmadipour et al.; licensee Beilstein-Institut.
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