1YFD:
reference: A new tyrosyl radical on Phe208 as ligand to the diiron center in Escherichia coli ribonucleotide reductase, mutant R2-Y122H. Combined x-ray diffraction and EPR/ENDOR studies., Kolberg M, Logan DT, Bleifuss G, Potsch S, Sjoberg BM, Graslund A, Lubitz W, Lassmann G, Lendzian F, J Biol Chem 2005 Mar 25;280(12):11233-46. Epub 2005 Jan 5. PMID: 15634667

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