Cox7a1 controls skeletal muscle physiology and heart regeneration through complex IV dimerization.
Dev Cell
; 59(14): 1824-1841.e10, 2024 Jul 22.
Article
en En
| MEDLINE
| ID: mdl-38701784
ABSTRACT
The oxidative phosphorylation (OXPHOS) system is intricately organized, with respiratory complexes forming super-assembled quaternary structures whose assembly mechanisms and physiological roles remain under investigation. Cox7a2l, also known as Scaf1, facilitates complex III and complex IV (CIII-CIV) super-assembly, enhancing energetic efficiency in various species. We examined the role of Cox7a1, another Cox7a family member, in supercomplex assembly and muscle physiology. Zebrafish lacking Cox7a1 exhibited reduced CIV2 formation, metabolic alterations, and non-pathological muscle performance decline. Additionally, cox7a1-/- hearts displayed a pro-regenerative metabolic profile, impacting cardiac regenerative response. The distinct phenotypic effects of cox7a1-/- and cox7a2l-/- underscore the diverse metabolic and physiological consequences of impaired supercomplex formation, emphasizing the significance of Cox7a1 in muscle maturation within the OXPHOS system.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Fosforilación Oxidativa
/
Regeneración
/
Pez Cebra
/
Complejo IV de Transporte de Electrones
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Músculo Esquelético
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Proteínas de Pez Cebra
/
Corazón
Límite:
Animals
Idioma:
En
Revista:
Dev Cell
Asunto de la revista:
EMBRIOLOGIA
Año:
2024
Tipo del documento:
Article
País de afiliación:
España