Conversion of an Electron-Transfer Protein into an Oxygen Binding Protein:  The Axial Cytochrome <i>b</i><sub>5</sub> Mutant with an Unusually High O<sub>2</sub> Affinity

Conversion of an Electron-Transfer Protein into an Oxygen Binding Protein:  The Axial Cytochrome <i>b</i><sub>5</sub> Mutant with an Unusually High O<sub>2</sub> Affinity