1UC9:
reference: Crystal structure of a lysine biosynthesis enzyme, LysX, from Thermus thermophilus HB8., Sakai H, Vassylyeva MN, Matsuura T, Sekine S, Gotoh K, Nishiyama M, Terada T, Shirouzu M, Kuramitsu S, Vassylyev DG, Yokoyama S, J Mol Biol 2003 Sep 19;332(3):729-40. PMID: 12963379

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