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Showing 1 to 7 of 7 for “"mcd spectroscopy"”.
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Characterization of metal sites. I. In molybdoenzymes and their model systems, and, II. On silver electrode surfaces
… use of optical and magnetic circular dichroism (MCD) spectroscopy. MCD spectra were obtained for (MOCl$\sb4$) $\sp-$ (M = Cr, and Mo) and (WOCl$\sb4$(H$\sb2$O)) $\sp-$ compounds. All of the spectra display temperature and field dependence consistent with a paramagnetic ground state. The two …
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Magneto-optical studies of RirA and cytochrome cd1
… reconstituted with an ironsulphur cluster. EPR spectroscopy combined with iron and sulphide assays suggests that the protein binds a [4Fe-4S] or [3Fe-4S] cluster per monomer. Cytochrome cd1 is a homodimeric nitrite reductase found in denitrifying bacteria. Each monomer binds a heme c that …
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Magneto-optical spectroscopic studies of multi-heme enzymes
… resonance (EPR) and magnetic circular dichroism (MCD) spectroscopies. Rebinding of tyrosine to the d1-heme, and loss of the bound product occurs concomitantly with a switch back to bis-histidinyl ligation at the c-heme at a rate of ~ 0.24 min−1 at pH 6.50. However, this does not represent a return …
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Magneto-optical spectroscopic studies of multi-heme enzymes
… resonance (EPR) and magnetic circular dichroism (MCD) spectroscopies. Rebinding of tyrosine to the d1-heme, and loss of the bound product occurs concomitantly with a switch back to bis-histidinyl ligation at the c-heme at a rate of ~ 0.24 min−1 at pH 6.50. However, this does not represent a return …
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Stabilizing Degenerate Dopants in Colloidal Semiconductor Nanocrystals
… Chapter 4 applies magnetic circular dichroism (MCD) spectroscopy to identify classical cyclotron splittings in plasmonic semiconductor nanocrystals, and compares their magnetic signatures with those exhibited by plasmonic metal nanoparticles. We demonstrate that the sign of the MCD signal is …
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Spectroscopic investigation of nitrogenase: EPR and MCD studies of the FeMo cofactor and the P-cluster
… binding and reduction of nitrogenase. EPR spectroscopy is used here to observe intermediate states generated by different substrates. Two different spin states (S=3/2 and S=1/2) were exhibited for each substrate, which may result from different binding of the substrate to the cofactor …
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Investigation of the Structure and Kinetics of Heme-Containing Proteins Using Magnetic Circular Dichroism and Rapid-Scan, Stopped-Flow Spectroscopy
… proteins, magnetic circular dichroism (MCD) spectrophotometry was used to determine structural aspects of different heme-containing proteins. </p> <p> In part one of this dissertation, two projects highlight the kinetics of reacting thiolate-ligated heme proteins with different …