Oxidation of (horse) hemoglobin by copper: an intermediate detected by electron spin resonance

DOI: 10.1021/bi00585a005 Authors: Joseph M. Rifkind Abstract: The oxidation of horse hemoglobin by Cu(II) has been followed by the changes in the electron spin resonance spectra of copper. By stopped-flow and freeze-quenching techniques, it is shown that the...

The pathway of electrons through QH2:cytochrome c oxidoreductase studied by pre-steady-state kinetics

DOI: 10.1016/0005-2728(82)90276-6 Authors: S. de Vries, Simon P. J. Albracht, J.A. Berden, E.C. Slater Abstract: N/A

Mechanism of Assembly of the Dimanganese-Tyrosyl Radical Cofactor of Class Ib Ribonucleotide Reductase: Enzymatic Generation of Superoxide Is Required for Tyrosine Oxidation via a Mn(III)Mn(IV) Intermediate

DOI: 10.1021/ja312457t Authors: Joseph A. Cotruvo, Troy A. Stich, R. David Britt, JoAnne Stubbe Abstract: Ribonucleotide reductases (RNRs) utilize radical chemistry to reduce nucleotides to deoxynucleotides in all organisms. In the class Ia and Ib RNRs, this reaction...

Reductive half-reaction of xanthine oxidase with xanthine. Observation of a spectral intermediate attributable to the molybdenum center in the reaction of enzyme with xanthine.

DOI: 10.1016/s0021-9258(18)54112-0 Authors: J.H. Kim, Russ Hille Abstract: The reductive half-reaction of xanthine oxidase with substoichiometric concentrations of xanthine and 1-methylxanthine at pH 10 and 8.5 has been examined by UV-visible stopped-flow and...

Dioxygen Activation at Non-Heme Diiron Centers:  Characterization of Intermediates in a Mutant Form of Toluene/o-Xylene Monooxygenase Hydroxylase

DOI: 10.1021/ja062762l Authors: Leslie J. Murray, Ricardo García‐Serres, Sunil Naik, Boi Hanh Huynh, Stephen J. Lippard Abstract: We report the generation and characterization of an intermediate in a mutant form of the toluene/o-xylene monooxygenase hydroxylase...