New Biological Paramagnetic Center: Octahedrally Coordinated Nickel(III) in the Methanogenic Bacteria

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Science  18 Jun 1982:
Vol. 216, Issue 4552, pp. 1324-1325
DOI: 10.1126/science.216.4552.1324


Methanobacterium bryantii was grown in medium supplemented with nickel-61, an isotope with a nuclear spin of 3/2. The appearance of nuclear hyperfine structure in the electron paramagnetic resonance spectrum of a cell extract identified a previously observed signal as nickel(III) in an environment of octahedral coordination with rhombic distortions.