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. 2011 May 13;436(Pt 2):447–455. doi: 10.1042/BJ20101059

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© 2011 The Author(s) The author(s) has paid for this article to be freely available under the terms of the Creative Commons Attribution Non-Commercial Licence (http://creativecommons.org/licenses/by-nc/2.5/) which permits unrestricted non-commercial use, distribution and reproduction in any medium, provided the original work is properly cited.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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(a) SPPS using Fmoc-protected mannosyl serine (1a) and mannosyl threonine (1b) building blocks for the evaluation of enzyme substrates of POMGnT1. (b) Synthesized peptides corresponding to portions of the amino acid sequence of α-DG are highlighted (grey, no enzymatic activity observed; black, enzymatic activity observed). (c) The glycoforms of the mannopeptide synthesized are shown with the glycosylamino acids indicated with a superscript dot; those which acted as POMGnT1 acceptor substrates are shown with a tick, whereas those which did not function are shown with a cross.