Three spacer-modified oligosaccharides (SMOs) 2, 3, and 4, ferent efficiencies. This is an indication of regioselective consisting of two nonreducing GlcNAc end groups, 0-linked chemical modification of the enzyme's extended binding by an acyclic 10-membered spacer carrying azi groups in PO- area, because the reactive carbene in each case is placed in sitions 2, 3, or 5, proved to be acceptor substrates for (1-4)-a different chemical ...
[Denton, Ross M.; An, Jie; Adeniran, Beatrice; Blake, Alexander J.; Lewis, William; Poulton, Andrew M. Journal of Organic Chemistry, 2011 , vol. 76, # 16 p. 6749 - 6767]