6D57:
reference: Functional insights into the interplay between DNA interaction and metal coordination in ferric uptake regulators., Sarvan S, Charih F, Askoura M, Butcher J, Brunzelle JS, Stintzi A, Couture JF, Sci Rep. 2018 May 8;8(1):7140. doi: 10.1038/s41598-018-25157-6. PMID: 29739988

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