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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Trumpower, Bernard L. Conte, Laura Zara, Vincenzo |
| Description | Author Affiliation: Zara V ( Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Prov.le Lecce-Monteroni, I-73100 Lecce, Italy. vincenzo.zara@unile.it) |
| Abstract | The mitochondrial respiratory chain is composed of four different protein complexes that cooperate in electron transfer and proton pumping across the inner mitochondrial membrane. The cytochrome $bc_{1}$ complex, or complex III, is a component of the mitochondrial respiratory chain. This review will focus on the biogenesis of the $bc_{1}$ complex in the mitochondria of the yeast Saccharomyces cerevisiae. In wild type yeast mitochondrial membranes the major part of the cytochrome $bc_{1}$ complex was found in association with one or two copies of the cytochrome c oxidase complex. The analysis of several yeast mutant strains in which single genes or pairs of genes encoding $bc_{1}$ subunits had been deleted revealed the presence of a common set of $bc_{1}$ sub-complexes. These sub-complexes are represented by the central core of the $bc_{1}$ complex, consisting of cytochrome b bound to subunit 7 and subunit 8, by the two core proteins associated with each other, by the Rieske protein associated with subunit 9, and by those deriving from the unexpected interaction of each of the two core proteins with cytochrome $c_{1}.$ Furthermore, a higher molecular mass sub-complex is that composed of cytochrome b, cytochrome $c_{1},$ core protein 1 and 2, subunit 6, subunit 7 and subunit 8. The identification and characterization of all these sub-complexes may help in defining the steps and the molecular events leading to $bc_{1}$ assembly in yeast mitochondria. |
| ISSN | 00063002 |
| Journal | Biochimica et Biophysica Acta (BBA) - Reviews on Cancer |
| Issue Number | 1 |
| Volume Number | 1793 |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2009-01-01 |
| Publisher Place | Netherlands |
| Access Restriction | Open |
| Subject Keyword | Electron Transport Complex III Chemistry Metabolism Saccharomyces Cerevisiae Proteins Saccharomyces Cerevisiae Animals Genetics Mitochondrial Membranes Models, Biological Models, Molecular Protein Conformation Biochemistry |
| Content Type | Text |
| Resource Type | Article |
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