Pathways shaping the mitochondrial inner membrane

Mitochondria are complex organelles with two membranes. Their architecture is determined by characteristic folds of the inner membrane, termed cristae. Recent studies in yeast and other organisms led to the identification of four major pathways that cooperate to shape cristae membranes. These includ...

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Main Authors: Till Klecker, Benedikt Westermann
Format: Article
Language:English
Published: The Royal Society 2021-12-01
Series:Open Biology
Subjects:
Online Access:https://royalsocietypublishing.org/doi/10.1098/rsob.210238
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author Till Klecker
Benedikt Westermann
author_facet Till Klecker
Benedikt Westermann
author_sort Till Klecker
collection DOAJ
description Mitochondria are complex organelles with two membranes. Their architecture is determined by characteristic folds of the inner membrane, termed cristae. Recent studies in yeast and other organisms led to the identification of four major pathways that cooperate to shape cristae membranes. These include dimer formation of the mitochondrial ATP synthase, assembly of the mitochondrial contact site and cristae organizing system (MICOS), inner membrane remodelling by a dynamin-related GTPase (Mgm1/OPA1), and modulation of the mitochondrial lipid composition. In this review, we describe the function of the evolutionarily conserved machineries involved in mitochondrial cristae biogenesis with a focus on yeast and present current models to explain how their coordinated activities establish mitochondrial membrane architecture.
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spelling doaj.art-75ecfe2df5b849dc9bd84ff4db1fee072023-04-28T11:06:27ZengThe Royal SocietyOpen Biology2046-24412021-12-01111210.1098/rsob.210238Pathways shaping the mitochondrial inner membraneTill Klecker0Benedikt Westermann1Institut für Zellbiologie, Universität Bayreuth, 95440 Bayreuth, GermanyInstitut für Zellbiologie, Universität Bayreuth, 95440 Bayreuth, GermanyMitochondria are complex organelles with two membranes. Their architecture is determined by characteristic folds of the inner membrane, termed cristae. Recent studies in yeast and other organisms led to the identification of four major pathways that cooperate to shape cristae membranes. These include dimer formation of the mitochondrial ATP synthase, assembly of the mitochondrial contact site and cristae organizing system (MICOS), inner membrane remodelling by a dynamin-related GTPase (Mgm1/OPA1), and modulation of the mitochondrial lipid composition. In this review, we describe the function of the evolutionarily conserved machineries involved in mitochondrial cristae biogenesis with a focus on yeast and present current models to explain how their coordinated activities establish mitochondrial membrane architecture.https://royalsocietypublishing.org/doi/10.1098/rsob.210238ATP synthasecristaeMgm1MICOSmitochondrial lipidsSaccharomyces cerevisiae
spellingShingle Till Klecker
Benedikt Westermann
Pathways shaping the mitochondrial inner membrane
Open Biology
ATP synthase
cristae
Mgm1
MICOS
mitochondrial lipids
Saccharomyces cerevisiae
title Pathways shaping the mitochondrial inner membrane
title_full Pathways shaping the mitochondrial inner membrane
title_fullStr Pathways shaping the mitochondrial inner membrane
title_full_unstemmed Pathways shaping the mitochondrial inner membrane
title_short Pathways shaping the mitochondrial inner membrane
title_sort pathways shaping the mitochondrial inner membrane
topic ATP synthase
cristae
Mgm1
MICOS
mitochondrial lipids
Saccharomyces cerevisiae
url https://royalsocietypublishing.org/doi/10.1098/rsob.210238
work_keys_str_mv AT tillklecker pathwaysshapingthemitochondrialinnermembrane
AT benediktwestermann pathwaysshapingthemitochondrialinnermembrane