Universität zu Köln

Edwards, Ruairidh, Gerlich, Sarah and Tokatlidis, Kostas ORCID: 0000-0001-6295-8183 (2020). The biogenesis of mitochondrial intermembrane space proteins. Biol. Chem., 401 (6-7). S. 737 - 748. BERLIN: WALTER DE GRUYTER GMBH. ISSN 1437-4315

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Abstract

The mitochondrial intermembrane space (IMS) houses a large spectrum of proteins with distinct and -critical functions. Protein import into this mitochondrial sub-compartment is underpinned by an intriguing variety of pathways, many of which are still poorly understood. The constricted volume of the IMS and the topological segregation by the inner membrane cristae into a bulk area surrounded by the boundary inner membrane and the lumen within the cristae is an important factor that adds to the complexity of the protein import, folding and assembly processes. We discuss the main import pathways into the IMS, but also how IMS proteins are degraded or even retro-translocated to the cytosol in an integrated network of interactions that is necessary to maintain a healthy balance of IMS proteins under physiological and cellular stress conditions. We conclude this review by highlighting new and exciting perspectives in this area with a view to develop a better understanding of yet unknown, likely unconventional import pathways, how presequence-less proteins can be targeted and the basis for dual localisation in the IMS and the cytosol. Such knowledge is critical to understanding the dynamic changes of the IMS -proteome in response to stress, and particularly important for-maintaining optimal mitochondrial fitness.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Edwards, Ruairidh UNSPECIFIED UNSPECIFIED UNSPECIFIED Gerlich, Sarah UNSPECIFIED UNSPECIFIED UNSPECIFIED Tokatlidis, Kostas UNSPECIFIED orcid.org/0000-0001-6295-8183 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-334776
DOI:	10.1515/hsz-2020-0114
Journal or Publication Title:	Biol. Chem.
Volume:	401
Number:	6-7
Page Range:	S. 737 - 748
Date:	2020
Publisher:	WALTER DE GRUYTER GMBH
Place of Publication:	BERLIN
ISSN:	1437-4315
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language DISULFIDE RELAY SYSTEM; CYTOCHROME-C PEROXIDASE; AAA PROTEASE YME1; INNER MEMBRANE; ELECTRON-TRANSFER; OUTER-MEMBRANE; FUNCTIONAL-ANALYSIS; APOCYTOCHROME-C; IMPORT; YEAST Multiple languages Biochemistry & Molecular Biology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/33477