2YIK:
reference: Structure of the catalytic domain of the Clostridium thermocellum cellulase CelT., Kesavulu MM, Tsai JY, Lee HL, Liang PH, Hsiao CD, Acta Crystallogr D Biol Crystallogr. 2012 Mar;68(Pt 3):310-20. Epub 2012 Feb 14. PMID: 22349233

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