Sökning: "proton reduction"
Visar resultat 1 - 5 av 112 avhandlingar innehållade orden proton reduction.
1. Choreography of a proton pump : Studies of charge-transfer reactions in cytochrome c oxidase
Sammanfattning : In the last step of cellular respiration, electrons from metabolites are transferred to molecular oxygen, mediated by the enzyme complexes of the respiratory chain. Some of these enzyme complexes couple these redox reactions to formation of an electrochemical proton gradient across the cell membrane. The proton gradient is used e.g. LÄS MER
2. Iron Carbonyl Clusters as Proton Reduction Catalysts
Sammanfattning : Abstract – The mixed-valence triiron complexes [Fe3(CO)7-x(PPh3)x(µ-edt)2] (x = 0, 1, 2; edt = SCH2CH2S) and [Fe3(CO)5(κ2-diphosphine)(µ-edt)2] (diphosphine = dppv, dppe, dppb, dppn) have been prepared and structurally characterized. In comparison to the diiron complex [Fe2(CO)6(µ-edt)], [Fe3(CO)7(µ-edt)2] catalyzes proton reduction at 0. LÄS MER
3. Electron and proton transfer in cytochrome c oxidase
Sammanfattning : This doctoral thesis describes results from studies on the mechanisms by which the enzyme cytochrome c oxidase catalyses the reduction of oxygen to water. Cytochrome c oxidase is the last integral enzyme complex of the socalled respiratory chain in the mitochondrial inner membrane (plasma membrane of bacteria). LÄS MER
4. Molecular Approaches to Photochemical Solar Energy Conversion : Towards Synthetic Catalysts for Water Oxidation and Proton Reduction
Sammanfattning : A molecular system capable of photoinduced water splitting is an attractive approach to solar energy conversion. This thesis deals with the functional characterization of molecular building blocks for the three principal functions of such a molecular system: Photoinduced accumulative charge separation, catalytic water oxidation, and catalytic proton reduction. LÄS MER
5. Nitric Oxide Reductase from Paracoccus denitrificans : A Proton Transfer Pathway from the “Wrong” Side
Sammanfattning : Denitrification is an anaerobic process performed by several soil bacteria as an alternative to aerobic respiration. A key-step in denitrification (the N-N-bond is made) is catalyzed by nitric oxide reductase (NOR); 2NO + 2e- + 2H+ → N2O + H2O. LÄS MER