1MXR:
reference: Displacement of the tyrosyl radical cofactor in ribonucleotide reductase obtained by single-crystal high-field EPR and 1.4-A x-ray data., Hogbom M, Galander M, Andersson M, Kolberg M, Hofbauer W, Lassmann G, Nordlund P, Lendzian F, Proc Natl Acad Sci U S A 2003 Mar 18;100(6):3209-14. PMID: 12624184

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