1DPR:
reference: Structures of the apo- and the metal ion-activated forms of the diphtheria tox repressor from Corynebacterium diphtheriae., Schiering N, Tao X, Zeng H, Murphy JR, Petsko GA, Ringe D, Proc Natl Acad Sci U S A 1995 Oct 10;92(21):9843-50. PMID: 7568230

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