Mitochondria are the site where oxidative phosphorylations (OXPHOSs) take place. Fusion and fission reactions allow them to change their overall morphology, which ranges from networks of elongated and branched filaments to collections of small individual organelles. It is assumed that mitochondrial bioenergetics and dynamics are linked and that mitochondrial morphology reflects their functional status. This review shows that the links between mitochondrial dynamics and bioenergetics are complex and that mitochondrial deficiencies are not systematically associated to fragmentation. In mammals, mitochondrial fragmentation is observed upon inhibition of OXPHOS with drugs, but not in most cellular models with OXPHOS deficits of genetic origin. In yeast, mitochondrial biogenesis and filament interconnectivity augment with increasing respiratory capacity, but mutation or inhibition of the respiratory chain does not provoke major morphological changes. Significant structural and morphological alterations appear restricted to mutation of genes involved in assembly or function of the F(1)F(0)-ATP-synthase. Finally, ex vivo studies (in mammals) and in vitro studies (in yeast) confirm the essential role of the inner membrane potential for mitochondrial fusion.
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Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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Site | Modification | Modifier | Source | Reference |
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Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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