2DZD:
reference: Structure of the biotin carboxylase domain of pyruvate carboxylase from Bacillus thermodenitrificans., Kondo S, Nakajima Y, Sugio S, Sueda S, Islam MN, Kondo H, Acta Crystallogr D Biol Crystallogr. 2007 Aug;63(Pt 8):885-90. Epub 2007, Jul 17. PMID: 17642515

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