Fig. 3: Molecular docking of the binding modes of the rare sugars tested in this study (i.e., D-tagatopyranose, L-sorbopyranose, and D-psicopyranose) to the putative covalent fructosyl intermediate of levansucrase from Bacillus subtilis CECT 39 (SacB). | npj Science of Food

Fig. 3: Molecular docking of the binding modes of the rare sugars tested in this study (i.e., D-tagatopyranose, L-sorbopyranose, and D-psicopyranose) to the putative covalent fructosyl intermediate of levansucrase from Bacillus subtilis CECT 39 (SacB).

From: Tailoring the natural rare sugars D-tagatose and L-sorbose to produce novel functional carbohydrates

Fig. 3

. Both the sugars and representative amino acid side chains from the SacB active site are shown as sticks model; potential H bonds are indicated by black dashed lines and putative interactions of -OH1 from D-tagatopyranose or -OH5 from L-sorbopyranose are shown as cyan dashed lines. The distinct stereochemistry of C5 of D-psicopyranose does not permit the fructosylation reaction to proceed (see the text for further details).

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