Nsiah-Sefaa 2016 Biosci Rep: Difference between revisions

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|abstract=Mitochondria provide the main source of energy to eukaryotic cells, oxidizing fats and sugars to generate ATP. Mitochondrial fatty acid ฮฒ-oxidation (FAO) and oxidative phosphorylation (OXPHOS) are two metabolic pathways which are central to this process. Defects in these pathways can result in diseases of the brain, skeletal muscle, heart and liver, affecting approximately 1 in 5000 live births. There are no effective therapies for these disorders, with quality of life severely reduced for most patients. The pathology underlying many aspects of these diseases is not well understood; for example, it is not clear why some patients with primary FAO deficiencies exhibit secondary OXPHOS defects. However, recent findings suggest that physical interactions exist between FAO and OXPHOS proteins, and that these interactions are critical for both FAO and OXPHOS function. Here, we review our current understanding of the interactions between FAO and OXPHOS proteins and how defects in these two metabolic pathways contribute to mitochondrial disease pathogenesis.
|abstract=Mitochondria provide the main source of energy to eukaryotic cells, oxidizing fats and sugars to generate ATP. Mitochondrial fatty acid ฮฒ-oxidation (FAO) and oxidative phosphorylation (OXPHOS) are two metabolic pathways which are central to this process. Defects in these pathways can result in diseases of the brain, skeletal muscle, heart and liver, affecting approximately 1 in 5000 live births. There are no effective therapies for these disorders, with quality of life severely reduced for most patients. The pathology underlying many aspects of these diseases is not well understood; for example, it is not clear why some patients with primary FAO deficiencies exhibit secondary OXPHOS defects. However, recent findings suggest that physical interactions exist between FAO and OXPHOS proteins, and that these interactions are critical for both FAO and OXPHOS function. Here, we review our current understanding of the interactions between FAO and OXPHOS proteins and how defects in these two metabolic pathways contribute to mitochondrial disease pathogenesis.
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}}
== Correction: FADH<sub>2</sub> and S-pathway ==
[[[[File:Nsiah-Sefaa 2016 Bioscie Reports CORRECTION.png|600px|right]]
ย 
{{Template:Correction FADH2 and S-pathway}}
::::* [[Complex II ambiguities]]
:::: [[[[File:Nsiah-Sefaa 2016 Bioscie Reports CORRECTION.png|600px]]
ย 
:::: A commonly found error on FADH<sub>2</sub> in the S-pathway requires correction. For clarification, see page 48 in [[Gnaiger_2020_BEC_MitoPathways |Gnaiger (2020)]]
::::* Quote (p 48): "Theย  substrateย  ofย  CIIย  isย  succinate,ย  whichย  isย  oxidizedย  formingย  fumarateย  while reducing flavin adenine dinucleotide FAD to FADH<sub>2</sub>, with further electron transfer to the quinone pool. Whereas reduced NADH is a substrate of Complex I linked to dehydrogenases of the TCA cycle and mt-matrix upstream of CI,ย  reducedย  FADH<sub>2</sub> is a product of Complex II with downstream electron flow from CII to Q."
ย 
:::::: Gnaiger E (2020) Mitochondrial pathways and respiratory control. An introduction to OXPHOS analysis. 5th ed. Bioenerg Commun 2020.2. https://doi.org/10.26124/bec:2020-0002
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Revision as of 13:46, 19 March 2023

Publications in the MiPMap
Nsiah-Sefaa A, McKenzie M (2016) Combined defects in oxidative phosphorylation and fatty acid ฮฒ-oxidation in mitochondrial disease. Biosci Rep 36:e00313. doi: 10.1042/BSR20150295

ยป PMID: 26839416 Open Access

Nsiah-Sefaa A, McKenzie M (2016) Biosci Rep

Abstract: Mitochondria provide the main source of energy to eukaryotic cells, oxidizing fats and sugars to generate ATP. Mitochondrial fatty acid ฮฒ-oxidation (FAO) and oxidative phosphorylation (OXPHOS) are two metabolic pathways which are central to this process. Defects in these pathways can result in diseases of the brain, skeletal muscle, heart and liver, affecting approximately 1 in 5000 live births. There are no effective therapies for these disorders, with quality of life severely reduced for most patients. The pathology underlying many aspects of these diseases is not well understood; for example, it is not clear why some patients with primary FAO deficiencies exhibit secondary OXPHOS defects. However, recent findings suggest that physical interactions exist between FAO and OXPHOS proteins, and that these interactions are critical for both FAO and OXPHOS function. Here, we review our current understanding of the interactions between FAO and OXPHOS proteins and how defects in these two metabolic pathways contribute to mitochondrial disease pathogenesis.

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Nsiah-Sefaa 2016 Bioscie Reports CORRECTION.png

Correction: FADH2 and Complex II

Ambiguity alert.png
FADH2 is shown as the substrate feeding electrons into Complex II (CII). This is wrong and requires correction - for details see Gnaiger (2024).
Gnaiger E (2024) Complex II ambiguities โ€• FADH2 in the electron transfer system. J Biol Chem 300:105470. https://doi.org/10.1016/j.jbc.2023.105470 - ยปBioblast linkยซ


Labels: MiParea: mt-Medicine 





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