A key role of the EMC complex for mitochondrial respiration and quiescence in fission yeasts DOI Creative Commons
Modesto Berraquero, Víctor A. Tallada, Juan Jiménez

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Дек. 17, 2024

Abstract In eukaryotes, oxygen consumption is mainly driven by the respiratory activity of mitochondria, which generates most cellular energy that sustains life. This parameter provides direct information about mitochondrial all aerobic biological systems. Using Seahorse analyzer instrument, we show here deletion oca3/emc2 gene ( oca3Δ ) encoding Emc2 subunit ER membrane complex (EMC), a conserved chaperone/insertase aids protein biogenesis in ER, severely affects rates and quiescence survival Schizosaccharomyces pombe yeast cells. Remarkably, defects mutation (EMC dysfunction) rescued synergistically disruption ergosterol biosynthesis erg5Δ) action fluidizing agent tween 20, suggesting role fluidity sterols composition respiration fission yeast.

Язык: Английский

Understanding Coenzyme Q DOI
Ying Wang, Noah Lilienfeldt, Siegfried Hekimi

и другие.

Physiological Reviews, Год журнала: 2024, Номер 104(4), С. 1533 - 1610

Опубликована: Окт. 1, 2024

Coenzyme Q (CoQ), also known as ubiquinone, comprises a benzoquinone head group and long isoprenoid side chain. It is thus extremely hydrophobic resides in membranes. best for its complex function an electron transporter the mitochondrial transport chain (ETC) but required several other crucial cellular processes. In fact, CoQ appears to be central entire redox balance of cell. Remarkably, structure therefore properties have not changed from bacteria vertebrates. metazoans, it synthesized all cells found most, maybe all, biological nutritional supplement, mostly because involvement with antioxidant defenses. However, whether there any health benefit oral consumption well established. Here we review redox-active molecule ETC enzymatic systems, role prooxidant reactive oxygen species generation, separate mechanisms. We biosynthesis, which particularly extreme hydrophobicity, consequences primary secondary deficiency, including human patients. Primary deficiency rare inborn condition due mutation biosynthetic genes. Secondary much more common, accompanies variety pathological conditions, disorders aging. this context, discuss importance, great difficulty, alleviating by supplementation.

Язык: Английский

Процитировано

9

4-Hydroxybenzoic acid rescues multisystemic disease and perinatal lethality in a mouse model of mitochondrial disease DOI Creative Commons

Julia Corral-Sarasa,

Juan Manuel Martinez Galvez, Pilar González-García

и другие.

Cell Reports, Год журнала: 2024, Номер 43(5), С. 114148 - 114148

Опубликована: Май 1, 2024

pathogenic variant induces cardiac insufficiency and neurodevelopmental delay in mice d Consequently, with Coq2 mutations exhibit perinatal lethality 4HB stimulates mitochondrial metabolism human cells COQ2 defects rescues multisystemic disease prevents the A252V model

Язык: Английский

Процитировано

5

Modelling the human Coenzyme Q deficiency in Drosophila melanogaster. DOI Creative Commons
Daniel J.M. Fernández‐Ayala, Sandra Jiménez-Gancedo,

Ignacio Guerra

и другие.

Free Radical Biology and Medicine, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0

Mitochondrial-ER Contact Sites and Tethers Influence the Biosynthesis and Function of Coenzyme Q DOI Creative Commons
Noelle Alexa Novales, Hadar Meyer,

Yeynit Asraf

и другие.

Contact, Год журнала: 2025, Номер 8

Опубликована: Янв. 1, 2025

Coenzyme Q (CoQ) is an essential redox-active lipid that plays a major role in the electron transport chain, driving mitochondrial ATP synthesis. In Saccharomyces cerevisiae (yeast), CoQ biosynthesis occurs exclusively matrix via large protein-lipid complex, synthome, comprised of itself, late-stage CoQ-intermediates, and polypeptides Coq3-Coq9 Coq11. Coq11 suggested to act as negative modulator synthome assembly synthesis, its deletion enhances Coq polypeptide content, produces enlarged restores respiration mutants lacking chaperone polypeptide, Coq10. The resides specific niches within inner membrane, termed domains, are often located adjacent endoplasmic reticulum-mitochondria encounter structure (ERMES). Loss ERMES destabilizes renders less efficient. Here we show COQ11 suppresses respiratory deficient phenotype select mutants, results repair reorganization domains. Given ER-mitochondrial contact sites coordinate biosynthesis, used Split-MAM (Mitochondrial Associated Membrane) artificial tether consisting site reporter, evaluate effects membrane tethers on both wild-type mutant yeast strains. Overall, this work identifies novel suppressor phenotypes associated with indicates ER-mitochondria influence content turnover, highlighting regulating homeostasis.

Язык: Английский

Процитировано

0

Corynebacterium glutamicum: vom Umami-Geschmack zur Bioökonomie DOI Creative Commons
Michael Bott, Volker F. Wendisch

BIOspektrum, Год журнала: 2025, Номер 31(1), С. 14 - 17

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

0

A Key Role of the EMC Complex for Mitochondrial Respiration and Quiescence in Fission Yeasts DOI
Modesto Berraquero, Víctor A. Tallada, Juan Jiménez

и другие.

Yeast, Год журнала: 2025, Номер unknown

Опубликована: Март 14, 2025

ABSTRACT In eukaryotes, oxygen consumption is mainly driven by the respiratory activity of mitochondria, which generates most cellular energy that sustains life. This parameter provides direct information about mitochondrial all aerobic biological systems. Using Seahorse analyzer instrument, we show here deletion oca3/emc2 gene ( oca3Δ ) encoding Emc2 subunit ER membrane complex (EMC), a conserved chaperone/insertase aids protein biogenesis in ER, severely affects rates and quiescence survival Schizosaccharomyces pombe yeast cells. Remarkably, defect mutation (EMC dysfunction) rescued synergistically disruption ergosterol biosynthesis erg5Δ) action fluidizing agent tween 20, suggesting role fluidity sterol composition respiration fission yeast.

Язык: Английский

Процитировано

0

Complete Enzyme Clustering Enhances Coenzyme Q Biosynthesis via Substrate Channeling DOI Creative Commons
D. I. C. Wang, Andrea Gottinger, Jinki Jeong

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2025, Номер unknown

Опубликована: Май 28, 2025

Abstract Metabolons - transient assemblies of sequential metabolic enzymes facilitate the reactions multi-step pathways, yet, how they mechanistically bolster flux remains unknown. Here, we investigate molecular determinants metabolon formation in coenzyme Q (CoQ) biosynthesis using coarse-grained dynamics simulations and biochemical experiments. We show that COQ forms at critical region a phase transition, where both clustering exhibit coordinated sigmoidal responses to changes protein-protein interaction strength. These complete metabolons enable substrate channeling between enzymes, leading crucial enhancement CoQ production efficiency. Selectively disrupting interactions randomly shuffling network demonstrate protein-proximity rather than fine structure clusters is imperative for channeling. Grounded experiment simulation, these findings provide framework understanding organization function across diverse pathways.

Язык: Английский

Процитировано

0

Primary Coenzyme Q10 Deficiency-Related Ataxias DOI Open Access
Piervito Lopriore,

Marco Vista,

Alessandra Tessa

и другие.

Journal of Clinical Medicine, Год журнала: 2024, Номер 13(8), С. 2391 - 2391

Опубликована: Апрель 19, 2024

Cerebellar ataxia is a neurological syndrome characterized by the imbalance (e.g., truncal ataxia, gait ataxia) and incoordination of limbs while executing task (dysmetria), caused dysfunction cerebellum or its connections. It frequently associated with other signs cerebellar dysfunction, including abnormal eye movements, dysmetria, kinetic tremor, dysarthria, and/or dysphagia. Among so-termed mitochondrial ataxias, variants in genes encoding steps coenzyme Q10 biosynthetic pathway represent common cause autosomal recessive primary deficiencies (PCoQD)s. PCoQD potentially treatable condition; therefore, correct timely diagnosis essential. After brief presentation illustrative case an Italian woman this condition (due to novel homozygous nonsense mutation

Язык: Английский

Процитировано

2

The Ubiquitous and Multifaceted Coenzyme Q DOI Creative Commons
Luca Tiano, Plácido Navas

Antioxidants, Год журнала: 2024, Номер 13(10), С. 1261 - 1261

Опубликована: Окт. 17, 2024

Coenzyme Q

Язык: Английский

Процитировано

2

AlphaFold Structure Analysis of COQ2 as Key Component of the Coenzyme Q Synthesis Complex DOI Open Access

María de los Ángeles Vargas-Pérez,

Damien P. Devos, Guillermo López‐Lluch

и другие.

Опубликована: Март 14, 2024

Coenzyme Q (CoQ) is a lipidic compound widely distributed in nature with crucial functions metabolism, protection against oxidative damage and ferroptosis, other processes. CoQ biosynthesis conserved complex pathway involving several proteins. COQ2 member of the UbiA family transmembrane prenyltransferases that catalyzes condensation head tail precursors CoQ, key step process because its product first intermediate will be modified by next component synthesis process. Mutations this protein have been linked to primary deficiency humans, rare disease predominantly affecting organs high energy demand. The reaction catalyzed mechanism are still unknown. Here we aimed at clarifying exploring possible substrate binding sites using strategy based on homology, comprising identification ligand-bound homologs solved structures available Protein Data Bank (PDB) their subsequent structural superposition AlphaFold predicted model for COQ2. results highlight some residues located central cavity or matrix loops may involved interaction, them mutated patients. Furthermore, analyze modifications introduced pathogenic mutations found humans. These findings shed new light understanding function and, thus, pathogenicity deficiency.

Язык: Английский

Процитировано

1