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Active site of QdtA from T. thermosaccharolyticum (PDB code 4O9G). A close-up view of the QdtA active site with dTDP-4-keto-6-deoxyglucose bound is displayed in (a). A superposition of the QdtA and FdtA active sites is presented in (b). Those residues belonging to QdtA or FdtA are colored in purple (and teal) or white, respectively. The top and bottom amino acid labels refer to QdtA and FdtA, respectively.
