4EKJ:
reference: The accessory domain changes the accessibility and molecular topography of the catalytic interface in monomeric GH39 beta-xylosidases., Santos CR, Polo CC, Correa JM, Simao Rde C, Seixas FA, Murakami MT, Acta Crystallogr D Biol Crystallogr. 2012 Oct;68(Pt 10):1339-45. Epub 2012 Sep, 18. PMID: 22993088

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