2GFI:
reference: Structure of Debaryomyces castellii CBS 2923 phytase., Ragon M, Hoh F, Aumelas A, Chiche L, Moulin G, Boze H, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2009 Apr 1;65(Pt, 4):321-6. Epub 2009 Mar 25. PMID: 19342770

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