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Robert L. Osborne, Ph.D.

Affiliations: 
University of South Carolina, Columbia, SC 
Area:
Bio-inorganic, bio-physical, and bio-organic chemistry; spectroscopy and mechanisms of action of dioxygen- and peroxide-activating heme iron enzymes and model systems; cytochrome P-450; magnetic circular dichroism spectroscopy
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"Robert Osborne"
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John H. Dawson grad student 2006 University of South Carolina
 (Spectroscopic, kinetic, and mechanistic studies of the peroxide-dependent oxidative dehalogenation of halophenols catalyzed by heme proteins: From globins to peroxidases.)

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Publications

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Davydov R, Osborne RL, Shanmugam M, et al. (2010) Probing the oxyferrous and catalytically active ferryl states of Amphitrite ornata dehaloperoxidase by cryoreduction and EPR/ENDOR spectroscopy. Detection of compound I. Journal of the American Chemical Society. 132: 14995-5004
Osborne RL, Coggins MK, Raner GM, et al. (2009) The mechanism of oxidative halophenol dehalogenation by Amphitrite ornata dehaloperoxidase is initiated by H2O2 binding and involves two consecutive one-electron steps: role of ferryl intermediates. Biochemistry. 48: 4231-8
Vetter SW, Terentis AC, Osborne RL, et al. (2009) Replacement of the axial histidine heme ligand with cysteine in nitrophorin 1: spectroscopic and crystallographic characterization. Journal of Biological Inorganic Chemistry : Jbic : a Publication of the Society of Biological Inorganic Chemistry. 14: 179-91
Davydov R, Osborne RL, Kim SH, et al. (2008) EPR and ENDOR studies of cryoreduced compounds II of peroxidases and myoglobin. Proton-coupled electron transfer and protonation status of ferryl hemes. Biochemistry. 47: 5147-55
Gruia F, Ionascu D, Kubo M, et al. (2008) Low-frequency dynamics of Caldariomyces fumago chloroperoxidase probed by femtosecond coherence spectroscopy. Biochemistry. 47: 5156-67
Gruia F, Ionascu D, Kubo M, et al. (2008) Low-frequency dynamics of Caldariomyces fumago chloroperoxidase probed by femtosecond coherence spectroscopy (Biochemistry (2008) 47, 18, (5156-5167)) Biochemistry. 47: 9344
Osborne RL, Coggins MK, Terner J, et al. (2007) Caldariomyces fumago chloroperoxidase catalyzes the oxidative dehalogenation of chlorophenols by a mechanism involving two one-electron steps. Journal of the American Chemical Society. 129: 14838-9
Osborne RL, Coggins MK, Walla M, et al. (2007) Horse heart myoglobin catalyzes the H2O2-dependent oxidative dehalogenation of chlorophenols to DNA-binding radicals and quinones. Biochemistry. 46: 9823-9
Osborne RL, Sumithran S, Coggins MK, et al. (2006) Spectroscopic characterization of the ferric states of Amphitrite ornata dehaloperoxidase and Notomastus lobatus chloroperoxidase: His-ligated peroxidases with globin-like proximal and distal properties. Journal of Inorganic Biochemistry. 100: 1100-8
Osborne RL, Raner GM, Hager LP, et al. (2006) C. fumago chloroperoxidase is also a dehaloperoxidase: oxidative dehalogenation of halophenols. Journal of the American Chemical Society. 128: 1036-7
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