title: The role of mitochondria in cellular iron-sulfur protein biogenesis: mechanisms, connected processes, and diseases.
abstract: Iron-sulfur (Fe/S) clusters belong to the most ancient protein cofactors in life, and fulfill functions in electron transport, enzyme catalysis, homeostatic regulation, and sulfur activation. The synthesis of Fe/S clusters and their insertion into apoproteins requires almost 30 proteins in the mitochondria and cytosol of eukaryotic cells. This review summarizes our current biochemical knowledge of mitochondrial Fe/S protein maturation. Because this pathway is essential for various extramitochondrial processes, we then explain how mitochondria contribute to the mechanism of cytosolic and nuclear Fe/S protein biogenesis, and to other connected processes including nuclear DNA replication and repair, telomere maintenance, and transcription. We next describe how the efficiency of mitochondria to assemble Fe/S proteins is used to regulate cellular iron homeostasis. Finally, we briefly summarize a number of mitochondrial "Fe/S diseases" in which various biogenesis components are functionally impaired owing to genetic mutations. The thorough understanding of the diverse biochemical disease phenotypes helps with testing the current working model for the molecular mechanism of Fe/S protein biogenesis and its connected processes.
authors.affiliation: Institut für Zytobiologie, Philipps-Universität Marburg, 35032 Marburg, Germany.
authors.forename: Oliver
authors.initials: O
authors.lastname: Stehling
authors.forename: Roland
authors.initials: R
authors.lastname: Lill
mesh_terms: D004261:DNA Replication / Q000502:physiology*; D006706:Homeostasis / Q000502:physiology*; D007501:Iron / Q000378:metabolism*; D007506:Iron-Sulfur Proteins / Q000096:biosynthesis*; D008928:Mitochondria / Q000378:metabolism / Q000502:physiology*; D008957:Models, Genetic
chemical_list: D007506:Iron-Sulfur Proteins; D007501:Iron
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