Cited by 152Metalloenzymes and iron-sulfur proteinsMitochondrial Function and PathologyNeurological diseases and metabolism

Inhibition of Fe-S cluster biosynthesis decreases mitochondrial iron export: Evidence that Yfh1p affects Fe-S cluster synthesis

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Chen, Opal S., Hemenway, Shawn, Kaplan, Jerry·2002·Proceedings of the National Academy of Sciences

Abstract

Decreased expression of Yfh1p in the budding yeast, Saccharomyces cerevisiae , and the orthologous human gene frataxin results in respiratory deficiency and mitochondrial iron accumulation. The absence of Yfh1p decreases mitochondrial iron export. We demonstrate that decreased expression of Nfs1p, the yeast cysteine desulfurase that plays a central role in Fe-S cluster synthesis, also results in mitochondrial iron accumulation due to decreased export of mitochondrial iron. In the absence of Yfh1p, activity of Fe-S-containing enzymes (aconitase, succinate dehydrogenase) is decreased, whereas the activity of a non-Fe-S-containing enzyme (malate dehydrogenase) is unaffected. Aconitase protein was abundant even though the activity of aconitase was decreased in both aerobic and anaerobic conditions. These results demonstrate a direct role of Yfh1p in the formation of Fe-S clusters and indicate that mitochondrial iron export requires Fe-S cluster biosynthesis.

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Authors
Chen, O. S., Hemenway, S., & Kaplan, J.
Affiliations
University of Utah (US)
Venue
Proceedings of the National Academy of Sciences
Published
2002-09-09
Volume
99
Issue
19
Pages
12321-12326
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2039280518
Cited by
152
References
31
Citations by year
2026: 1 · 2025: 1 · 2024: 3 · 2023: 3 · 2022: 1 · 2021: 8 · 2020: 5 · 2019: 4 · 2018: 2 · 2017: 5 · 2015: 2 · 2014: 5 · 2013: 8 · 2012: 7
FWCI
16.64
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK 52380, R01DK052380)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Metalloenzymes and iron-sulfur proteins
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Neuroscience › Neurology › Neurological diseases and metabolism
Keywords
frataxin, iron-sulfur cluster assembly, mitochondrial iron accumulation, Saccharomyces cerevisiae, aconitase, succinate dehydrogenase, malate dehydrogenase, respiratory deficiency, cysteine desulfurase
MeSH terms
Frataxin, Aconitate Hydratase, Biological Transport, Active, Carrier Proteins, Fungal Proteins, Humans, Iron, Iron-Sulfur Proteins, Mitochondria, Oxidation-Reduction, RNA, Fungal, RNA, Messenger, Saccharomyces cerevisiae, Sulfurtransferases, Mitochondrial Proteins, Saccharomyces cerevisiae Proteins, Iron-Binding Proteins

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