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MITCHELL MEDAL LECTUREDistinct properties of semiquinone species detected at the ubiquinol oxidation Qo site of cytochrome bc1 and their mechanistic implicationsPreparation and electron paramagnetic resonance characterization of spin labeled monoderivatives of horse cytochrome c.De novo design of a D2-symmetrical protein that reproduces the diheme four-helix bundle in cytochrome bc1.Visualizing changes in electron distribution in coupled chains of cytochrome bc(1) by modifying barrier for electron transfer between the FeS cluster and heme c(1).An electronic bus bar lies in the core of cytochrome bc1Fixing the Q cycle.Mitochondrial Disease-related Mutation G167P in Cytochrome b of Rhodobacter capsulatus Cytochrome bc1 (S151P in Human) Affects the Equilibrium Distribution of [2Fe-2S] Cluster and Generation of Superoxide.Tuning of Hemes b Equilibrium Redox Potential Is Not Required for Cross-Membrane Electron Transfer.Demonstration of short-lived complexes of cytochrome c with cytochrome bc1 by EPR spectroscopy: implications for the mechanism of interprotein electron transfer.Mitochondrial disease-related mutations at the cytochrome b-iron-sulfur protein (ISP) interface: Molecular effects on the large-scale motion of ISP and superoxide generation studied in Rhodobacter capsulatus cytochrome bc1.Atomistic determinants of co-enzyme Q reduction at the Qi-site of the cytochrome bc1 complexTriplet state of the semiquinone-Rieske cluster as an intermediate of electronic bifurcation catalyzed by cytochrome bc1.Metastable radical state, nonreactive with oxygen, is inherent to catalysis by respiratory and photosynthetic cytochromes bc1/b6f.Back-reactions, short-circuits, leaks and other energy wasteful reactions in biological electron transfer: redox tuning to survive life in O(2).Fusing proteins as an approach to study bioenergetic enzymes and processes.Cytochrome bc1-cy fusion complexes reveal the distance constraints for functional electron transfer between photosynthesis components.Soluble variants of Rhodobacter capsulatus membrane-anchored cytochrome cy are efficient photosynthetic electron carriers.Role of the PEWY glutamate in hydroquinone-quinone oxidation-reduction catalysis in the Qo Site of cytochrome bc1.Resilience of Rhodobacter sphaeroides cytochrome bc1 to heme c1 ligation changes.Enzymatic activities of isolated cytochrome bc₁-like complexes containing fused cytochrome b subunits with asymmetrically inactivated segments of electron transfer chains.Molecular organization of cytochrome c2 near the binding domain of cytochrome bc1 studied by electron spin-lattice relaxation enhancementIdentifying involvement of Lys251/Asp252 pair in electron transfer and associated proton transfer at the quinone reduction site of Rhodobacter capsulatus cytochrome bc1.Fusing two cytochromes b of Rhodobacter capsulatus cytochrome bc1 using various linkers defines a set of protein templates for asymmetric mutagenesis.Magnetic interactions sense changes in distance between heme b(L) and the iron-sulfur cluster in cytochrome bc(1).Electronic connection between the quinone and cytochrome C redox pools and its role in regulation of mitochondrial electron transport and redox signalingDiscrimination between two possible reaction sequences that create potential risk of generation of deleterious radicals by cytochrome bc₁. Implications for the mechanism of superoxide production.Quinone and non-quinone redox couples in Complex III.Hybrid fusions show that inter-monomer electron transfer robustly supports cytochrome bc1 function in vivo.Exposing the complex III Qo semiquinone radical.Catalytically-relevant electron transfer between two hemes bL in the hybrid cytochrome bc1-like complex containing a fusion of Rhodobacter sphaeroides and capsulatus cytochromes b.Controlling the functionality of cytochrome c(1) redox potentials in the Rhodobacter capsulatus bc(1) complex through disulfide anchoring of a loop and a beta-branched amino acid near the heme-ligating methionine.Spectroscopic and oxidation-reduction properties of Rhodobacter capsulatus cytochrome c1 and its M183K and M183H variants.Role of acidic and aromatic amino acids in Rhodobacter capsulatus cytochrome c1. A site-directed mutagenesis study.Key role of water in proton transfer at the Qo-site of the cytochrome bc1 complex predicted by atomistic molecular dynamics simulations.Reversible redox energy coupling in electron transfer chains.Novel cyanide inhibition at cytochrome c1 of Rhodobacter capsulatus cytochrome bc1.Mitochondrial complex III and related bc-complexes.Direct observation of redox-linked histidine protonation changes in the iron-sulfur protein of the cytochrome bc1 complex by ATR-FTIR spectroscopy.De novo design of a redox-active minimal rubredoxin mimic.
P50
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P50
description
researcher, ORCID id # 0000-0002-1637-2365
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
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Artur Osyczka
@hsb
Artur Osyczka
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P214
P1153
7004724922
P1412
P1559
Artur Osyczka
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P21
P214
P27
P31
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P496
0000-0002-1637-2365
P735
P7859
viaf-311412677