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. Author manuscript; available in PMC: 2013 Nov 1.
Published in final edited form as: Coord Chem Rev. 2012 Apr 5;256(21-22):2478–2487. doi: 10.1016/j.ccr.2012.03.032

Fig. 12.

Fig. 12

Proposed redox pathways in E. coli ribonucleotide reductases. It is not known whether W48 is involved in the pathway of E. coli RNR. Arrows show proposed hole migration pathways.