2YXG:
reference: Structure of dihydrodipicolinate synthase from Methanocaldococcus jannaschii., Padmanabhan B, Strange RW, Antonyuk SV, Ellis MJ, Hasnain SS, Iino H, Agari Y, Bessho Y, Yokoyama S, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2009 Dec 1;65(Pt, 12):1222-6. Epub 2009 Nov 27. PMID: 20054116

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