1IR0:
reference: Atomic resolution structures of oxidized [4Fe-4S] ferredoxin from Bacillus thermoproteolyticus in two crystal forms: systematic distortion of [4Fe-4S] cluster in the protein., Fukuyama K, Okada T, Kakuta Y, Takahashi Y, J Mol Biol 2002 Feb 1;315(5):1155-66. PMID: 11827483

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