5XIA:
reference: Structures of D-xylose isomerase from Arthrobacter strain B3728 containing the inhibitors xylitol and D-sorbitol at 2.5 A and 2.3 A resolution, respectively., Henrick K, Collyer CA, Blow DM, J Mol Biol 1989 Jul 5;208(1):129-57. PMID: 2769749

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