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EPR studies on radical enzymes are reviewed under the aspects of the information that they can provide and of the techniques that are used. An overview of organic radicals derived from amino acids, modified amino acids, and cofactors is given and g tensor data are compiled. The information accessible from a spectroscopic point of view is contrasted with the information required to understand enzyme...
This short review compiles high-field electron paramagnetic resonance (EPR) and electron nuclear double resonance (ENDOR) studies on different intermediate amino acid radicals, which emerge in wild-type and mutant class I ribonucleotide reductase (RNR) both in the reaction of protein subunit R2 with molecular oxygen, which generates the essential tyrosyl radical, and in the catalytic reaction, which...
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