Cytochrome bc1 complexes of microorganisms.
نویسندگان
چکیده
منابع مشابه
Cytochrome bc1 complexes of microorganisms.
The cytochrome bc1 complex is the most widely occurring electron transfer complex capable of energy transduction. Cytochrome bc1 complexes are found in the plasma membranes of phylogenetically diverse photosynthetic and respiring bacteria, and in the inner mitochondrial membrane of all eucaryotic cells. In all of these species the bc1 complex transfers electrons from a low-potential quinol to a...
متن کاملCrystallization of cytochrome bc1 complex.
Complex III (cytochrome bc1 particle; ubiquinol:ferricytochrome c oxidoreductase, EC 1.10.2.2) was purified from beef heart mitochondria by a combination of hydrophobic interaction and affinity chromatography. By washing the complex with detergent on the hydrophobic interaction column, phospholipids were effectively depleted; 7 mol of cardiolipin per mol of cytochrome c1 was retained in the fin...
متن کاملCytochrome bc1-cy fusion complexes reveal the distance constraints for functional electron transfer between photosynthesis components.
Photosynthetic (Ps) growth of purple non-sulfur bacteria such as Rhodobacter capsulatus depends on the cyclic electron transfer (ET) between the ubihydroquinone (QH2): cytochrome (cyt) c oxidoreductases (cyt bc1 complex), and the photochemical reaction centers (RC), mediated by either a membrane-bound (cyt c(y)) or a freely diffusible (cyt c2) electron carrier. Previously, we constructed a func...
متن کاملThe cytochrome bc1 complex: function in the context of structure.
The bc1 complexes are intrinsic membrane proteins that catalyze the oxidation of ubihydroquinone and the reduction of cytochrome c in mitochondrial respiratory chains and bacterial photosynthetic and respiratory chains. The bc1 complex operates through a Q-cycle mechanism that couples electron transfer to generation of the proton gradient that drives ATP synthesis. Genetic defects leading to mu...
متن کاملRelative Orientation of the Hemes of the Cytochrome bc1 Complexes from Rhodobacter sphaeroides, Rhodospirillum rubrum, and Beef Heart Mitochondria
From the ‡Laboratoire de Bioénergétique et Ingénierie des Protéines CNRS UPR 9036, Institut de Biologie Structurale et Microbiologie, 31 Chemin Joseph Aiguier, F-13402 Marseille Cedex 20, ¶Section de Bioénergétique, Département de Biologie Cellulaire et Moléculaire, CEA Saclay, F-91191 Gif sur Yvette Cedex, and iCEA/Cadarache, DSV-DEVMLaboratoire de Bioénergétique Cellulaire, F-13108 Saint Paul...
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ژورنال
عنوان ژورنال: Microbiological Reviews
سال: 1990
ISSN: 0146-0749
DOI: 10.1128/mmbr.54.2.101-129.1990