4FZP:
reference: A protein engineered to bind uranyl selectively and with femtomolar affinity., Zhou L, Bosscher M, Zhang C, Ozcubukcu S, Zhang L, Zhang W, Li CJ, Liu J, Jensen MP, Lai L, He C, Nat Chem. 2014 Mar;6(3):236-41. doi: 10.1038/nchem.1856. Epub 2014 Jan 26. PMID: 24557139

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