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Figure 2.
FIG. 2. Overlap of the unliganded O2 enzyme showing Arg-268
and adjacent residues with the observed position of acceptor
(green) and UDP (magenta) of wild-type GTA. The position of the
GalNAc residue (magenta) has been modeled after Patenaude et al.
(6) and shows severe conflicts with the Arg-268 side chain that
completely blocks the sugar residue from the active site.
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