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Electron capture at the iron-oxygen centre in single crystals of oxymyoglobin studied by electron spin resonance
Biochimica Et Biophysica Acta
|August 21, 1978
Abstract:
Exposure of single crystals of oxy-myoglobin to 60Co gamma-rays at 77 K results in electron addition to the Fe-O2 units. The resulting ESR spectrum has been analysed to give the principal values and directions for the g-tensor of this unit. The results suggest that the dioxygen ligand is strongly tilted, the direction of tilt being close to one of the bisectors of the N-Fe-N bond angles. Possible reasons for this orientation are discussed.