2NLR:
reference: The crystal structure of a 2-fluorocellotriosyl complex of the Streptomyces lividans endoglucanase CelB2 at 1.2 A resolution., Sulzenbacher G, Mackenzie LF, Wilson KS, Withers SG, Dupont C, Davies GJ, Biochemistry 1999 Apr 13;38(15):4826-33. PMID: 10200171

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