Sökning: "cytochrome c oxidase"

Visar resultat 21 - 25 av 63 avhandlingar innehållade orden cytochrome c oxidase.

1. 21. Synthesis of hemes found in heme-copper oxidases of Bacillus subtilis

   Författare :Mimmi Throne-Holst; Biologiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Microbiology; Biologi; Biology; heme biosynthesis; respiratory oxidase; cytochrome; bacteriology; virology; mycology; Mikrobiologi; bakteriologi; virologi; mykologi;

   Sammanfattning : The last step of aerobic respiration, the reduction of dioxygen to water, is catalysed by terminal oxidases. These oxidases can be divided into two unrelated families, the heme-copper oxidases and the cytochrome bd-type oxidases. These enzymes contain two or more heme molecules as prosthetic groups. LÄS MER

3. 22. Proton transfer across and along biological membranes

   Författare :Johan Berg; Peter Brzezinski; Artur Osyczka; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; biological membranes; cardiolipin; cytochrome bo3; cytochrome c oxidase; energy conversion; fluorescence correlation spectroscopy FCS ; localized coupling; mitochondria; proton transfer; Rcf1; respiration; single-enzyme measurement; Biochemistry; biokemi;

   Sammanfattning : Proton-transfer reactions belong to the most prevalent reactions in the biosphere and make life on Earth possible, as they are central to energy conversion. In most known organisms, protons are translocated from one side of a membrane to the other, which generates an electrochemical gradient that drives ATP synthesis. LÄS MER

4. 23. Role of respiratory supercomplexes : Electronic connection between complexes III and IV

   Författare :Agnes Moe; Peter Brzezinski; James A. Letts; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; electron transfer; cytochrome c oxidase; cytochrome bc1; respiratory supercomplex; bioenergetics; membrane protein; biokemi; Biochemistry;

   Sammanfattning : In the final step of cellular respiration, electrons are transferred through the respiratory chain to reduce molecular oxygen to water. The energy released in this chain is used to maintain a proton electrochemical gradient across the cell membrane, which is used, for example, by the ATP synthase to produce ATP. LÄS MER

5. 24. Molecular machinery of a membrane-bound proton pump : Studies of charge transfer reactions in cytochrome c oxidase

   Författare :Emelie Svahn; Peter Brzezinski; Ville Kaila; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; membrane protein; respiration; redox reaction; cytochrome aa3; cytochrome c oxidase; Biochemistry; biokemi;

   Sammanfattning : In cellular respiration, electron transfer from the breakdown of foodstuff is coupled to the formation of an electrochemical proton gradient. This is accomplished through proton translocation by respiratory complexes, and the proton gradient is subsequently used e.g. to drive ATP production. LÄS MER

7. 25. Control Mechanisms of Electron and Proton Transfer in Cytochrome c Oxidase

   Författare :Martin Karpefors; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Cytochrome c oxidase is a remarkable molecular machine that is bound in the inner mitochondrial membrane or in the cell membrane of bacteria. Using the free energy that is released when electrons from foodstuff are transferred to molecular oxygen, protons are translocated from the inner to the outer side of the membrane. LÄS MER