Determination of the metal ion separation and energies of the three lowest electronic states of dimanganese (II,II) complexes and enzymes: catalase and liver arginase.

@article{Khangulov1995DeterminationOT,
  title={Determination of the metal ion separation and energies of the three lowest electronic states of dimanganese (II,II) complexes and enzymes: catalase and liver arginase.},
  author={Sergei V. Khangulov and P J Pessiki and Vladimir V. Barynin and David E. Ash and G Charles Dismukes},
  journal={Biochemistry},
  year={1995},
  volume={34 6},
  pages={2015-25}
}
The dimanganese (II,II) catalase from Thermus thermophilus, MnCat(II,II), arginase from rat liver, Arg(II,II), and several dimanganese(II,II) compounds, LMn2XY2, which are functional catalase mimics, all possess a pair of coupled Mn(II) ions in their catalytic sites. For each of these, we have measured by EPR spectroscopy the relative energies separating the three lowest electronic states (singlet, triplet, and quintet), described a general method for extracting the individual spectra for these… CONTINUE READING