3NEK:
reference: Structural underpinnings of nitrogen regulation by the prototypical nitrogen-responsive transcriptional factor NrpR., Wisedchaisri G, Dranow DM, Lie TJ, Bonanno JB, Patskovsky Y, Ozyurt SA, Sauder JM, Almo SC, Wasserman SR, Burley SK, Leigh JA, Gonen T, Structure. 2010 Nov 10;18(11):1512-21. PMID: 21070950

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