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Mechanism of protein biosynthesis in mammalian mitochondria.


ABSTRACT: Protein synthesis in mammalian mitochondria produces 13 proteins that are essential subunits of the oxidative phosphorylation complexes. This review provides a detailed outline of each phase of mitochondrial translation including initiation, elongation, termination, and ribosome recycling. The roles of essential proteins involved in each phase are described. All of the products of mitochondrial protein synthesis in mammals are inserted into the inner membrane. Several proteins that may help bind ribosomes to the membrane during translation are described, although much remains to be learned about this process. Mutations in mitochondrial or nuclear genes encoding components of the translation system often lead to severe deficiencies in oxidative phosphorylation, and a summary of these mutations is provided. This article is part of a Special Issue entitled: Mitochondrial Gene Expression.

SUBMITTER: Christian BE 

PROVIDER: S-EPMC3314146 | biostudies-literature | 2012 Sep-Oct

REPOSITORIES: biostudies-literature

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Mechanism of protein biosynthesis in mammalian mitochondria.

Christian Brooke E BE   Spremulli Linda L LL  

Biochimica et biophysica acta 20111207 9-10


Protein synthesis in mammalian mitochondria produces 13 proteins that are essential subunits of the oxidative phosphorylation complexes. This review provides a detailed outline of each phase of mitochondrial translation including initiation, elongation, termination, and ribosome recycling. The roles of essential proteins involved in each phase are described. All of the products of mitochondrial protein synthesis in mammals are inserted into the inner membrane. Several proteins that may help bind  ...[more]

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