2RFW:
reference: Crystal structures of Melanocarpus albomyces cellobiohydrolase Cel7B in complex with cello-oligomers show high flexibility in the substrate binding., Parkkinen T, Koivula A, Vehmaanpera J, Rouvinen J, Protein Sci. 2008 Aug;17(8):1383-94. Epub 2008 May 21. PMID: 18499583

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