3GTN:
reference: Crystallization and crystallographic analysis of Bacillus subtilis xylanase C., St John FJ, Godwin DK, Preston JF, Pozharski E, Hurlbert JC, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2009 May 1;65(Pt, 5):499-503. Epub 2009 Apr 24. PMID: 19407387

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