1AYF:
reference: New aspects of electron transfer revealed by the crystal structure of a truncated bovine adrenodoxin, Adx(4-108)., Muller A, Muller JJ, Muller YA, Uhlmann H, Bernhardt R, Heinemann U, Structure 1998 Mar 15;6(3):269-80. PMID: 9551550

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