An evidence based hypothesis on the existence of two pathways of mitochondrial crista formation.
Elife
; 52016 11 16.
Article
em En
| MEDLINE
| ID: mdl-27849155
ABSTRACT
Metabolic function and architecture of mitochondria are intimately linked. More than 60 years ago, cristae were discovered as characteristic elements of mitochondria that harbor the protein complexes of oxidative phosphorylation, but how cristae are formed, remained an open question. Here we present experimental results obtained with yeast that support a novel hypothesis on the existence of two molecular pathways that lead to the generation of lamellar and tubular cristae. Formation of lamellar cristae depends on the mitochondrial fusion machinery through a pathway that is required also for homeostasis of mitochondria and mitochondrial DNA. Tubular cristae are formed via invaginations of the inner boundary membrane by a pathway independent of the fusion machinery. Dimerization of the F1FO-ATP synthase and the presence of the MICOS complex are necessary for both pathways. The proposed hypothesis is suggested to apply also to higher eukaryotes, since the key components are conserved in structure and function throughout evolution.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Saccharomyces cerevisiae
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Proteínas de Ligação ao GTP
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ATPases Mitocondriais Próton-Translocadoras
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Proteínas de Saccharomyces cerevisiae
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Proteínas Mitocondriais
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Membranas Mitocondriais
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GTP Fosfo-Hidrolases
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Mitocôndrias
Idioma:
En
Revista:
Elife
Ano de publicação:
2016
Tipo de documento:
Article
País de afiliação:
Alemanha