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. Author manuscript; available in PMC: 2018 Jan 11.
Published in final edited form as: Biochem Soc Trans. 2016 Feb;44(1):129–142. doi: 10.1042/BST20150200

Figure 1.

Figure 1

Structures of (A) GT-A-fold nucleotide-diphosphate-sugar transferase SpsA from Bacillus subtilis (PDB ID 1QGQ) [26] and (B) GT-B-fold bacteriophage T4 β-glucosyltransferase (PDB ID 1JG7) [27]. The magnesium cation (green sphere) and UDP (stick model) in the active site are shown.