Structural basis for activation of class Ib ribonucleotide reductase.
Boal, A.K., Cotruvo, J.A., Stubbe, J., Rosenzweig, A.C.(2010) Science 329: 1526-1530
- PubMed: 20688982 
- DOI: 10.1126/science.1190187
- Primary Citation of Related Structures:  
3N37, 3N38, 3N39, 3N3A, 3N3B - PubMed Abstract: 
The class Ib ribonucleotide reductase of Escherichia coli can initiate reduction of nucleotides to deoxynucleotides with either a Mn(III)2-tyrosyl radical (Y•) or a Fe(III)2-Y• cofactor in the NrdF subunit. Whereas Fe(III)2-Y• can self-assemble from Fe(II)2-NrdF and O2, activation of Mn(II)2-NrdF requires a reduced flavoprotein, NrdI, proposed to form the oxidant for cofactor assembly by reduction of O2 ...