Abstract
The biosynthesis of heparan sulfate (HS) involves an array of specialized sulfotransferases. Here, we present a study aimed at engineering the substrate specificity of different HS 3-O-sulfotransferase isoforms. Based on the crystal structures, we identified a pair of amino acid residues responsible for selecting the substrates. Mutations of these residues altered the substrate specificities. Our results demonstrate the feasibility of tailoring the specificity of sulfotransferases to modify HS with desired functions.
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Acknowledgements
The authors thank G. Cohen and R. Eisenberg (University of Pennsylvania) for providing gD-1 (306t) and anti-gD antibody. We also thank H. Kohn, L.G. Pedersen and T. Hall for reviewing the manuscript. This work is supported in part by a US National Institutes of Health grant (AI50050 to J.L.) and by the Intramural Research Program of the NIH, National Institute of Environmental Health Sciences (to L.C.P.). D.X. is a recipient of a predoctoral fellowship from the American Heart Association, MidAtlantic Affiliate.
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D.X., D.S. and J.L. prepared and characterized 3-OST mutants. A.F.M. and L.C.P. performed crystallization of 3-OST-5 and subsequent data analysis. D.X., A.F.M., L.C.P. and J.L. wrote the manuscript.
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Supplementary Figures 1–4, Supplementary Tables 1–5 and Supplementary Methods (PDF 859 kb)
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Xu, D., Moon, A., Song, D. et al. Engineering sulfotransferases to modify heparan sulfate. Nat Chem Biol 4, 200–202 (2008). https://doi.org/10.1038/nchembio.66
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DOI: https://doi.org/10.1038/nchembio.66
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