1YXC:
reference: The crystal structures of native and (S)-lysine-bound dihydrodipicolinate synthase from Escherichia coli with improved resolution show new features of biological significance., Dobson RC, Griffin MD, Jameson GB, Gerrard JA, Acta Crystallogr D Biol Crystallogr. 2005 Aug;61(Pt 8):1116-24. Epub 2005, Jul 20. PMID: 16041077

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