Crystal structures of oxidized dinuclear manganese centres in Mn-substituted class I ribonucleotide reductase from Escherichia coli: carboxylate shifts with implications for O2 activation and radical generation.
Hogbom, M., Andersson, M.E., Nordlund, P.(2001) J Biol Inorg Chem 6: 315-323
- PubMed: 11315567 
- DOI: 10.1007/s007750000205
- Primary Citation of Related Structures:  
1JPR, 1JQC - PubMed Abstract: 
The di-iron carboxylate proteins constitute a diverse class of non-heme iron enzymes performing a multitude of redox reactions. These reactions usually involve high-valent Fe-oxo species and are thought to be controlled by carboxylate shifts. Owing to their short lifetime, the intermediate structures have so far escaped structural characterization by X-ray crystallography ...