ArticleThe Journal of biological chemistry2011
Specialized function of yeast Isa1 and Isa2 proteins in the maturation of mitochondrial [4Fe-4S] proteins.
Article in The Journal of biological chemistry, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 82 papers.
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Who cites it
82 citing papers in PubMed, 171 citations in OpenAlex.
- Iron-sulfur cluster biogenesis and regulation of intracellular iron homeostasis in Escherichia coli.Metallomics : integrated biometal science · 2025Review
- The cytochrome oxidase defect in ISC-depleted yeast is caused by impaired iron-sulfur cluster maturation of the mitoribosome assembly factor Rsm22.FEBS letters · 2025Article
- Deficits in mitochondrial dynamics and iron balance result in templated insertions.Nature communications · 2025Article
- Riboflavin drives nucleotide biosynthesis and iron-sulfur metabolism to promote acute myeloid leukemia.bioRxiv : the preprint server for biology · 2025Article
- Isa2p is essential inJournal of biosciences · 2025Article
- Defects in the Maturation of Mitochondrial Iron-Sulfur Proteins: Biophysical Investigation of the MMDS3 Causing Gly104Cys Variant of IBA57.International journal of molecular sciences · 2024Article
- Iron-sulfur protein odyssey: exploring their cluster functional versatility and challenging identification.Metallomics : integrated biometal science · 2024Review
- Unexpected divergence in magnetoreceptor MagR from robin and pigeon linked to two sequence variations.Zoological research · 2024Article
- Recent progress of methods for cuproptosis detection.Frontiers in molecular biosciences · 2024Review
- Essentiality of theInternational journal of molecular sciences · 2023Article
- Towards magnetism in pigeon MagR: Iron- and iron-sulfur binding work indispensably and synergistically.Zoological research · 2023Article
- Mössbauer-based molecular-level decomposition of the Saccharomyces cerevisiae ironome, and preliminary characterization of isolated nuclei.Metallomics : integrated biometal science · 2022Article
- Assembly of the Multi-Subunit CytochromeInternational journal of molecular sciences · 2022Review
- Mammalian iron sulfur cluster biogenesis and human diseases.IUBMB life · 2022Article
- Recent Advances in the Elucidation of Frataxin Biochemical Function Open Novel Perspectives for the Treatment of Friedreich's Ataxia.Frontiers in neuroscience · 2022Review
- A pathogenic role for histone H3 copper reductase activity in a yeast model of Friedreich's ataxia.Science advances · 2021Article
- Characterization and Reconstitution of Human Lipoyl Synthase (LIAS) Supports ISCA2 and ISCU as Primary Cluster Donors and an Ordered Mechanism of Cluster Assembly.International journal of molecular sciences · 2021Article
- Biogenesis of Iron-Sulfur Clusters and Their Role in DNA Metabolism.Frontiers in cell and developmental biology · 2021Review
- [4Fe-4S] cluster trafficking mediated byThe Journal of biological chemistry · 2020Article
- The Arabidopsis Mitochondrial Glutaredoxin GRXS15 Provides [2Fe-2S] Clusters for ISCA-Mediated [4Fe-4S] Cluster Maturation.International journal of molecular sciences · 2020Article
22 more citing papers are in PubMed but not listed here.
Corrections and comments
- Erratum issued
Authors and funding
5 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Most eukaryotes contain iron-sulfur cluster (ISC) assembly proteins related to Saccharomyces cerevisiae Isa1 and Isa2. We show here that Isa1 but not Isa2 can be functionally replaced by the bacterial relatives IscA, SufA, and ErpA. The specific function of these "A-type" ISC proteins within the framework of mitochondrial and bacterial Fe/S protein biogenesis is still unresolved. In a comprehensive in vivo analysis, we show that S. cerevisiae Isa1 and Isa2 form a complex that is required for maturation of mitochondrial [4Fe-4S] proteins, including aconitase and homoaconitase. In contrast, Isa1-Isa2 were dispensable for the generation of mitochondrial [2Fe-2S] proteins and cytosolic [4Fe-4S] proteins. Targeting of bacterial [2Fe-2S] and [4Fe-4S] ferredoxins to yeast mitochondria further supported this specificity. Isa1 and Isa2 proteins are shown to bind iron in vivo, yet the Isa1-Isa2-bound iron was not needed as a donor for de novo assembly of the [2Fe-2S] cluster on the general Fe/S scaffold proteins Isu1-Isu2. Upon depletion of the ISC assembly factor Iba57, which specifically interacts with Isa1 and Isa2, or in the absence of the major mitochondrial [4Fe-4S] protein aconitase, iron accumulated on the Isa proteins. These results suggest that the iron bound to the Isa proteins is required for the de novo synthesis of [4Fe-4S] clusters in mitochondria and for their insertion into apoproteins in a reaction mediated by Iba57. Taken together, these findings define Isa1, Isa2, and Iba57 as a specialized, late-acting ISC assembly subsystem that is specifically dedicated to the maturation of mitochondrial [4Fe-4S] proteins.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.