Issue 16, 2020

Biochemical characterisation of an α1,4 galactosyltransferase from Neisseria weaveri for the synthesis of α1,4-linked galactosides

Abstract

The human cell surface trisaccharide motifs globotriose and P1 antigen play key roles in infections by pathogenic bacteria, which makes them important synthetic targets as antibacterial agents. Enzymatic strategies to install the terminal α1,4-galactosidic linkage are very attractive but have only been demonstrated for a limited set of analogues. Herein, a new bacterial α1,4 galactosyltransferase from N. weaveri was cloned and produced recombinantly in E. coli BL21 (DE3) cells, followed by investigation of its substrate specificity. We demonstrate that the enzyme can tolerate galactosamine (GalN) and also 6-deoxygalactose and 6-deoxy-6-fluorogalactose as donors, and lactose and N-acetyllactosamine as acceptors, leading directly to analogues of Gb3 and P1 that are valuable chemical probes and showcase how biocatalysis can provide fast access to a number of unnatural carbohydrate analogues.

Graphical abstract: Biochemical characterisation of an α1,4 galactosyltransferase from Neisseria weaveri for the synthesis of α1,4-linked galactosides

Supplementary files

Article information

Article type
Paper
Submitted
24 Feb 2020
Accepted
30 Mar 2020
First published
30 Mar 2020

Org. Biomol. Chem., 2020,18, 3142-3148

Biochemical characterisation of an α1,4 galactosyltransferase from Neisseria weaveri for the synthesis of α1,4-linked galactosides

K. Huang, A. Marchesi, K. Hollingsworth, P. Both, A. P. Mattey, E. Pallister, H. Ledru, S. J. Charnock, M. C. Galan, W. B. Turnbull, F. Parmeggiani and S. L. Flitsch, Org. Biomol. Chem., 2020, 18, 3142 DOI: 10.1039/D0OB00407C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements