Biochemistry (Moscow)

, Volume 81, Issue 10, pp 1066–1080 | Cite as

Iron-sulfur clusters in mitochondrial metabolism: Multifaceted roles of a simple cofactor

Review

Abstract

Iron-sulfur metabolism is essential for cellular function and is a key process in mitochondria. In this review, we focus on the structure and assembly of mitochondrial iron-sulfur clusters and their roles in various metabolic processes that occur in mitochondria. Iron-sulfur clusters are crucial in mitochondrial respiration, in which they are required for the assembly, stability, and function of respiratory complexes I, II, and III. They also serve important functions in the citric acid cycle, DNA metabolism, and apoptosis. Whereas the identification of iron-sulfur containing proteins and their roles in numerous aspects of cellular function has been a long-standing research area, that in mitochondria is comparatively recent, and it is likely that their roles within mitochondria have been only partially revealed. We review the status of the field and provide examples of other cellular iron-sulfur proteins to highlight their multifarious roles.

Key words

iron-sulfur clusters iron-sulfur metabolism mitochondria respiration citric acid cycle DNA metabolism 

Abbreviations

BN-PAGE

blue native polyacrylamide gel electrophoresis

cI-III

respiratory complexes I-III

CIA

cytosolic iron-sulfur protein assembly

ETC

electron transport chain

Fe-S

iron-sulfur

IRE

iron-responsive elements

IRP

ironregulatory protein

ISCs

iron-sulfur clusters

ISP

iron-sulfur protein

mtDNA

mitochondrial DNA

Q

ubiquinone

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© Pleiades Publishing, Ltd. 2016

Authors and Affiliations

  1. 1.Department of Biology and BiochemistryBirzeit UniversityBirzeitPalestine
  2. 2.Department of Biochemistry and Molecular Biology and Center for Mitochondrial Science and MedicineMichigan State UniversityEast LansingUSA

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