منابع مشابه
Electron Flow through Proteins.
Electron transfers in photosynthesis and respiration commonly occur between metal-containing cofactors that are separated by large molecular distances. Employing laser flash-quench triggering methods, we have shown that 20-Å, coupling-limited Fe(II) to Ru(III) and Cu(I) to Ru(III) electron tunneling in Ru-modified cytochromes and blue copper proteins can occur on the microsecond timescale both ...
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Metalloproteins often contain metal centers that are paramagnetic in some functional state of the protein; hence electron paramagnetic resonance (EPR) spectroscopy can be a powerful tool for studying protein structure and function. Dipolar spectroscopy allows the determination of the dipole-dipole interactions between metal centers in protein complexes, revealing the structural arrangement of d...
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E.p.r. is a spectroscopic technique that probes the environment of a paramagnetic centre by defining tlie size and shape of the magnetic moment produced by the unpaired electron. and by characterizing any magnetic fields which might be produced by the parent molecule in the vicinity of the paramagnetic centre. In the context of our interests, these unpaired electrons are found either in selecte...
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The close functional interplay between the prosthetic group and the polypeptide chain in redox enzymes is the theme of this paper, and re— presents a natural extension of the well established regulation exerted by the protein mojety on the ligand binding properties of hemoglobins and other oxygen carriers. Two relevant examples are discussed: in the first one (azurin) the mole— cular mechanism ...
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1. Cytochrome spectra of liver and heart mitochondria incubated under various conditions are presented to compare the effects of antimycin, colletotrichin and 2-heptyl-4-hydroxyquinoline N-oxide (HQNO) additions. 2. Under aerobic conditions, in State 4, in the presence of uncoupler or in the presence of cyanide, all three inhibitors caused oxidation of cytochromes c and cl, but different change...
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ژورنال
عنوان ژورنال: Chemical Reviews
سال: 2013
ISSN: 0009-2665,1520-6890
DOI: 10.1021/cr4004715