1FD2:
reference: Site-directed mutagenesis of Azotobacter vinelandii ferredoxin I: [Fe-S] cluster-driven protein rearrangement., Martin AE, Burgess BK, Stout CD, Cash VL, Dean DR, Jensen GM, Stephens PJ, Proc Natl Acad Sci U S A 1990 Jan;87(2):598-602. PMID: 2153958

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