5ZQJ:
reference: Structure-based protein engineering of bacterial beta-xylosidase to increase the production yield of xylobiose from xylose., Hong S, Kyung M, Jo I, Kim YR, Ha NC, Biochem Biophys Res Commun. 2018 Jun 27;501(3):703-710. doi:, 10.1016/j.bbrc.2018.05.051. PMID: 29752942

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