1
|
Vallières C, Benoit O, Guittet O, Huang ME, Lepoivre M, Golinelli-Cohen MP, Vernis L. Iron-sulfur protein odyssey: exploring their cluster functional versatility and challenging identification. Metallomics 2024; 16:mfae025. [PMID: 38744662 PMCID: PMC11138216 DOI: 10.1093/mtomcs/mfae025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 04/22/2024] [Indexed: 05/16/2024]
Abstract
Iron-sulfur (Fe-S) clusters are an essential and ubiquitous class of protein-bound prosthetic centers that are involved in a broad range of biological processes (e.g. respiration, photosynthesis, DNA replication and repair and gene regulation) performing a wide range of functions including electron transfer, enzyme catalysis, and sensing. In a general manner, Fe-S clusters can gain or lose electrons through redox reactions, and are highly sensitive to oxidation, notably by small molecules such as oxygen and nitric oxide. The [2Fe-2S] and [4Fe-4S] clusters, the most common Fe-S cofactors, are typically coordinated by four amino acid side chains from the protein, usually cysteine thiolates, but other residues (e.g. histidine, aspartic acid) can also be found. While diversity in cluster coordination ensures the functional variety of the Fe-S clusters, the lack of conserved motifs makes new Fe-S protein identification challenging especially when the Fe-S cluster is also shared between two proteins as observed in several dimeric transcriptional regulators and in the mitoribosome. Thanks to the recent development of in cellulo, in vitro, and in silico approaches, new Fe-S proteins are still regularly identified, highlighting the functional diversity of this class of proteins. In this review, we will present three main functions of the Fe-S clusters and explain the difficulties encountered to identify Fe-S proteins and methods that have been employed to overcome these issues.
Collapse
Affiliation(s)
- Cindy Vallières
- Université Paris-Saclay, Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Gif-sur-Yvette cedex 91198, France
| | - Orane Benoit
- Université Paris-Saclay, Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Gif-sur-Yvette cedex 91198, France
| | - Olivier Guittet
- Université Paris-Saclay, Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Gif-sur-Yvette cedex 91198, France
| | - Meng-Er Huang
- Université Paris-Saclay, Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Gif-sur-Yvette cedex 91198, France
| | - Michel Lepoivre
- Université Paris-Saclay, Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Gif-sur-Yvette cedex 91198, France
| | - Marie-Pierre Golinelli-Cohen
- Université Paris-Saclay, Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Gif-sur-Yvette cedex 91198, France
| | - Laurence Vernis
- Université Paris-Saclay, Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Gif-sur-Yvette cedex 91198, France
| |
Collapse
|
2
|
Burger N, Mittenbühler MJ, Xiao H, Shin S, Bozi LHM, Wei S, Sprenger HG, Sun Y, Zhu Y, Darabedian N, Petrocelli JJ, Muro PL, Che J, Chouchani ET. A comprehensive landscape of the zinc-regulated human proteome. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.04.574225. [PMID: 38260676 PMCID: PMC10802333 DOI: 10.1101/2024.01.04.574225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Zinc is an essential micronutrient that regulates a wide range of physiological processes, principally through Zn 2+ binding to protein cysteine residues. Despite being critical for modulation of protein function, for the vast majority of the human proteome the cysteine sites subject to regulation by Zn 2+ binding remain undefined. Here we develop ZnCPT, a comprehensive and quantitative mapping of the zinc-regulated cysteine proteome. We define 4807 zinc-regulated protein cysteines, uncovering protein families across major domains of biology that are subject to either constitutive or inducible modification by zinc. ZnCPT enables systematic discovery of zinc-regulated structural, enzymatic, and allosteric functional domains. On this basis, we identify 52 cancer genetic dependencies subject to zinc regulation, and nominate malignancies sensitive to zinc-induced cytotoxicity. In doing so, we discover a mechanism of zinc regulation over Glutathione Reductase (GSR) that drives cell death in GSR-dependent lung cancers. We provide ZnCPT as a resource for understanding mechanisms of zinc regulation over protein function.
Collapse
|
3
|
Tsutsumi E, Niwa S, Takeda R, Sakamoto N, Okatsu K, Fukai S, Ago H, Nagao S, Sekiguchi H, Takeda K. Structure of a putative immature form of a Rieske-type iron-sulfur protein in complex with zinc chloride. Commun Chem 2023; 6:190. [PMID: 37689761 PMCID: PMC10492824 DOI: 10.1038/s42004-023-01000-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 08/30/2023] [Indexed: 09/11/2023] Open
Abstract
Iron-sulfur clusters are prosthetic groups of proteins involved in various biological processes. However, details of the immature state of the iron-sulfur cluster into proteins have not yet been elucidated. We report here the first structural analysis of the Zn-containing form of a Rieske-type iron-sulfur protein, PetA, from Thermochromatium tepidum (TtPetA) by X-ray crystallography and small-angle X-ray scattering analysis. The Zn-containing form of TtPetA was indicated to be a dimer in solution. The zinc ion adopts a regular tetra-coordination with two chloride ions and two cysteine residues. Only a histidine residue in the cluster-binding site exhibited a conformational difference from the [2Fe-2S] containing form. The Zn-containing structure indicates that the conformation of the cluster binding site is already constructed and stabilized before insertion of [2Fe-2S]. The binding mode of ZnCl2, similar to the [2Fe-2S] cluster, suggests that the zinc ions might be involved in the insertion of the [2Fe-2S] cluster.
Collapse
Affiliation(s)
- Erika Tsutsumi
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Satomi Niwa
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Ryota Takeda
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Natsuki Sakamoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Kei Okatsu
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Shuya Fukai
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Hideo Ago
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo, 679-5148, Japan
| | - Satoshi Nagao
- Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo, 679-5198, Japan
| | - Hiroshi Sekiguchi
- Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo, 679-5198, Japan
| | - Kazuki Takeda
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan.
| |
Collapse
|
4
|
Mitochondrial De Novo Assembly of Iron–Sulfur Clusters in Mammals: Complex Matters in a Complex That Matters. INORGANICS 2022. [DOI: 10.3390/inorganics10030031] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/10/2022] Open
Abstract
Iron–sulfur clusters (Fe–S or ISC) are essential cofactors that function in a wide range of biological pathways. In mammalian cells, Fe–S biosynthesis primarily relies on mitochondria and involves a concerted group of evolutionary-conserved proteins forming the ISC pathway. In the early stage of the ISC pathway, the Fe–S core complex is required for de novo assembly of Fe–S. In humans, the Fe–S core complex comprises the cysteine desulfurase NFS1, the scaffold protein ISCU2, frataxin (FXN), the ferredoxin FDX2, and regulatory/accessory proteins ISD11 and Acyl Carrier Protein (ACP). In recent years, the field has made significant advances in unraveling the structure of the Fe–S core complex and the mechanism underlying its function. Herein, we review the key recent findings related to the Fe–S core complex and its components. We highlight some of the unanswered questions and provide a model of the Fe–S assembly within the complex. In addition, we briefly touch on the genetic diseases associated with mutations in the Fe–S core complex components.
Collapse
|
5
|
Fujishiro T, Nakamura R, Kunichika K, Takahashi Y. Structural diversity of cysteine desulfurases involved in iron-sulfur cluster biosynthesis. Biophys Physicobiol 2022; 19:1-18. [PMID: 35377584 PMCID: PMC8918507 DOI: 10.2142/biophysico.bppb-v19.0001] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 02/02/2022] [Indexed: 12/04/2022] Open
Abstract
Cysteine desulfurases are pyridoxal-5'-phosphate (PLP)-dependent enzymes that mobilize sulfur derived from the l-cysteine substrate to the partner sulfur acceptor proteins. Three cysteine desulfurases, IscS, NifS, and SufS, have been identified in ISC, NIF, and SUF/SUF-like systems for iron-sulfur (Fe-S) cluster biosynthesis, respectively. These cysteine desulfurases have been investigated over decades, providing insights into shared/distinct catalytic processes based on two types of enzymes (type I: IscS and NifS, type II: SufS). This review summarizes the insights into the structural/functional varieties of bacterial and eukaryotic cysteine desulfurases involved in Fe-S cluster biosynthetic systems. In addition, an inactive cysteine desulfurase IscS paralog, which contains pyridoxamine-5'-phosphate (PMP), instead of PLP, is also described to account for its hypothetical function in Fe-S cluster biosynthesis involving this paralog. The structural basis for cysteine desulfurase functions will be a stepping stone towards understanding the diversity and evolution of Fe-S cluster biosynthesis.
Collapse
Affiliation(s)
- Takashi Fujishiro
- Department of Biochemistry and Moecular Biology, Graduate School of Science and Engineering, Saitama University
| | - Ryosuke Nakamura
- Department of Biochemistry and Moecular Biology, Graduate School of Science and Engineering, Saitama University
| | - Kouhei Kunichika
- Department of Biochemistry and Moecular Biology, Graduate School of Science and Engineering, Saitama University
| | - Yasuhiro Takahashi
- Department of Biochemistry and Moecular Biology, Graduate School of Science and Engineering, Saitama University
| |
Collapse
|
6
|
Abstract
Iron–sulfur (Fe–S) clusters are protein cofactors of a multitude of enzymes performing essential biological functions. Specialized multi-protein machineries present in all types of organisms support their biosynthesis. These machineries encompass a scaffold protein on which Fe–S clusters are assembled and a cysteine desulfurase that provides sulfur in the form of a persulfide. The sulfide ions are produced by reductive cleavage of the persulfide, which involves specific reductase systems. Several other components are required for Fe–S biosynthesis, including frataxin, a key protein of controversial function and accessory components for insertion of Fe–S clusters in client proteins. Fe–S cluster biosynthesis is thought to rely on concerted and carefully orchestrated processes. However, the elucidation of the mechanisms of their assembly has remained a challenging task due to the biochemical versatility of iron and sulfur and the relative instability of Fe–S clusters. Nonetheless, significant progresses have been achieved in the past years, using biochemical, spectroscopic and structural approaches with reconstituted system in vitro. In this paper, we review the most recent advances on the mechanism of assembly for the founding member of the Fe–S cluster family, the [2Fe2S] cluster that is the building block of all other Fe–S clusters. The aim is to provide a survey of the mechanisms of iron and sulfur insertion in the scaffold proteins by examining how these processes are coordinated, how sulfide is produced and how the dinuclear [2Fe2S] cluster is formed, keeping in mind the question of the physiological relevance of the reconstituted systems. We also cover the latest outcomes on the functional role of the controversial frataxin protein in Fe–S cluster biosynthesis.
Collapse
|
7
|
Maio N, Jain A, Rouault TA. Mammalian iron-sulfur cluster biogenesis: Recent insights into the roles of frataxin, acyl carrier protein and ATPase-mediated transfer to recipient proteins. Curr Opin Chem Biol 2020; 55:34-44. [PMID: 31918395 PMCID: PMC7237328 DOI: 10.1016/j.cbpa.2019.11.014] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 11/20/2019] [Accepted: 11/30/2019] [Indexed: 12/31/2022]
Abstract
The recently solved crystal structures of the human cysteine desulfurase NFS1, in complex with the LYR protein ISD11, the acyl carrier protein ACP, and the main scaffold ISCU, have shed light on the molecular interactions that govern initial cluster assembly on ISCU. Here, we aim to highlight recent insights into iron-sulfur (Fe-S) cluster (ISC) biogenesis in mammalian cells that have arisen from the crystal structures of the core ISC assembly complex. We will also discuss how ISCs are delivered to recipient proteins and the challenges that remain in dissecting the pathways that deliver clusters to numerous Fe-S recipient proteins in both the mitochondrial matrix and cytosolic compartments of mammalian cells.
Collapse
Affiliation(s)
- Nunziata Maio
- Molecular Medicine Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 9000 Rockville Pike, Bethesda, MD 20892, USA
| | - Anshika Jain
- Molecular Medicine Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 9000 Rockville Pike, Bethesda, MD 20892, USA
| | - Tracey A Rouault
- Molecular Medicine Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 9000 Rockville Pike, Bethesda, MD 20892, USA.
| |
Collapse
|
8
|
Lin CW, McCabe JW, Russell DH, Barondeau DP. Molecular Mechanism of ISC Iron-Sulfur Cluster Biogenesis Revealed by High-Resolution Native Mass Spectrometry. J Am Chem Soc 2020; 142:6018-6029. [PMID: 32131593 DOI: 10.1021/jacs.9b11454] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Iron-sulfur (Fe-S) clusters are ubiquitous protein cofactors that are required for many important biological processes including oxidative respiration, nitrogen fixation, and photosynthesis. Biosynthetic pathways assemble Fe-S clusters with different iron-to-sulfur stoichiometries and distribute these clusters to appropriate apoproteins. In the ISC pathway, the pyridoxal 5'-phosphate-dependent cysteine desulfurase enzyme IscS provides sulfur to the scaffold protein IscU, which templates the Fe-S cluster assembly. Despite their functional importance, mechanistic details for cluster synthesis have remained elusive. Recent advances in native mass spectrometry (MS) have allowed proteins to be preserved in native-like structures and support applications in the investigation of protein structure, dynamics, ligand interactions, and the identification of protein-associated intermediates. Here, we prepared samples under anaerobic conditions and then applied native MS to investigate the molecular mechanism for Fe-S cluster synthesis. This approach was validated by the high agreement between native MS and traditional visible circular dichroism spectroscopic assays. Time-dependent native MS experiments revealed potential iron- and sulfur-based intermediates that decay as the [2Fe-2S] cluster signal developed. Additional experiments establish that (i) Zn(II) binding stabilizes IscU and protects the cysteine residues from oxidation, weakens the interactions between IscU and IscS, and inhibits Fe-S cluster biosynthesis; and (ii) Fe(II) ions bind to the IscU active site cysteine residues and another lower affinity binding site and promote the intermolecular sulfur transfer reaction from IscS to IscU. Overall, these results support an iron-first model for Fe-S cluster synthesis and highlight the power of native MS in defining protein-associated intermediates and elucidating mechanistic details of enzymatic processes.
Collapse
Affiliation(s)
- Cheng-Wei Lin
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| | - Jacob W McCabe
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| | - David H Russell
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| | - David P Barondeau
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| |
Collapse
|
9
|
Bagwe-Parab S, Kaur G. Molecular targets and therapeutic interventions for iron induced neurodegeneration. Brain Res Bull 2020; 156:1-9. [DOI: 10.1016/j.brainresbull.2019.12.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 12/14/2019] [Accepted: 12/17/2019] [Indexed: 01/17/2023]
|
10
|
Lewis BE, Mason Z, Rodrigues AV, Nuth M, Dizin E, Cowan JA, Stemmler TL. Unique roles of iron and zinc binding to the yeast Fe-S cluster scaffold assembly protein "Isu1". Metallomics 2019; 11:1820-1835. [PMID: 31532427 DOI: 10.1039/c9mt00172g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Mitochondrial Fe-S cluster biosynthesis is accomplished within yeast utilizing the biophysical attributes of the "Isu1" scaffold assembly protein. As a member of a highly homologous protein family, Isu1 has sequence conservation between orthologs and a conserved ability to assemble [2Fe-2S] clusters. Regardless of species, scaffold orthologs have been shown to exist in both "disordered" and "structured" conformations, a structural architecture that is directly related to conformations utilized during Fe-S cluster assembly. During assembly, the scaffold helps direct the delivery and utilization of Fe(ii) and persulfide substrates to produce [2Fe-2S] clusters, however Zn(ii) binding alters the activity of the scaffold while at the same time stabilizes the protein in its structured state. Additional studies confirm Zn binds to the scaffold's Cys rich active site, and has an impact on the protein's ability to make Fe-S clusters. Understanding the interplay between Fe(ii) and Zn(ii) binding to Isu1 in vitro may help clarify metal loading events that occur during Fe-S cluster assembly in vivo. Here we determine the metal : protein stoichiometry for Isu1 Zn and Fe binding to be 1 : 1 and 2 : 1, respectively. As expected, while Zn binding shifts the Isu1 to its structured state, folding is not influenced by Fe(ii) binding. X-ray absorption spectroscopy (XAS) confirms Zn(ii) binds to the scaffold's cysteine rich active site but Fe(ii) binds at a location distinct from the active site. XAS results show Isu1 binding initially of either Fe(ii) or Zn(ii) does not significantly perturb the metal site structure of alternate metal. XAS confirmed that four scaffold orthologs bind iron as high-spin Fe(ii) at a site composed of ca. 6 oxygen and nitrogen nearest neighbor ligands. Finally, in our report Zn binding dramatically reduces the Fe-S cluster assembly activity of Isu1 even in the presence of frataxin. Given the Fe-binding activity we report for Isu1 and its orthologs here, a possible mechanism involving Fe(ii) transport to the scaffold's active site during cluster assembly has been considered.
Collapse
Affiliation(s)
- Brianne E Lewis
- Department of Pharmaceutical Science, Wayne State University, Detroit, MI 48201, USA.
| | - Zachary Mason
- Department of Pharmaceutical Science, Wayne State University, Detroit, MI 48201, USA.
| | - Andria V Rodrigues
- Department of Pharmaceutical Science, Wayne State University, Detroit, MI 48201, USA.
| | - Manunya Nuth
- Department of Chemistry, The Ohio State University, Columbus, OH 43210, USA
| | - Eric Dizin
- Department of Chemistry, The Ohio State University, Columbus, OH 43210, USA
| | - J A Cowan
- Department of Chemistry, The Ohio State University, Columbus, OH 43210, USA
| | - Timothy L Stemmler
- Department of Pharmaceutical Science, Wayne State University, Detroit, MI 48201, USA.
| |
Collapse
|
11
|
Gervason S, Larkem D, Mansour AB, Botzanowski T, Müller CS, Pecqueur L, Le Pavec G, Delaunay-Moisan A, Brun O, Agramunt J, Grandas A, Fontecave M, Schünemann V, Cianférani S, Sizun C, Tolédano MB, D'Autréaux B. Physiologically relevant reconstitution of iron-sulfur cluster biosynthesis uncovers persulfide-processing functions of ferredoxin-2 and frataxin. Nat Commun 2019; 10:3566. [PMID: 31395877 PMCID: PMC6687725 DOI: 10.1038/s41467-019-11470-9] [Citation(s) in RCA: 106] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 07/04/2019] [Indexed: 12/16/2022] Open
Abstract
Iron-sulfur (Fe-S) clusters are essential protein cofactors whose biosynthetic defects lead to severe diseases among which is Friedreich's ataxia caused by impaired expression of frataxin (FXN). Fe-S clusters are biosynthesized on the scaffold protein ISCU, with cysteine desulfurase NFS1 providing sulfur as persulfide and ferredoxin FDX2 supplying electrons, in a process stimulated by FXN but not clearly understood. Here, we report the breakdown of this process, made possible by removing a zinc ion in ISCU that hinders iron insertion and promotes non-physiological Fe-S cluster synthesis from free sulfide in vitro. By binding zinc-free ISCU, iron drives persulfide uptake from NFS1 and allows persulfide reduction into sulfide by FDX2, thereby coordinating sulfide production with its availability to generate Fe-S clusters. FXN stimulates the whole process by accelerating persulfide transfer. We propose that this reconstitution recapitulates physiological conditions which provides a model for Fe-S cluster biosynthesis, clarifies the roles of FDX2 and FXN and may help develop Friedreich's ataxia therapies.
Collapse
Affiliation(s)
- Sylvain Gervason
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette cedex, France
| | - Djabir Larkem
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette cedex, France
| | - Amir Ben Mansour
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette cedex, France
| | - Thomas Botzanowski
- Laboratoire de Spectrométrie de Masse BioOrganique, Université de Strasbourg, CNRS, IPHC UMR 7178, 67000, Strasbourg, France
| | - Christina S Müller
- Fachbreich Physik, Technische Universität Kaiserslautern, Erwin-Schrödinger-Str. 56, 67663, Kaiserslautern, Germany
| | - Ludovic Pecqueur
- Laboratoire de Chimie des Processus Biologiques, Collège de France, Sorbonne Université, CNRS UMR 8229, PSL Research University, 11 place Marcelin Berthelot, 75005, Paris, France
| | - Gwenaelle Le Pavec
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette cedex, France
| | - Agnès Delaunay-Moisan
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette cedex, France
| | - Omar Brun
- Departament de Química Orgànica i IBUB, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, E-08028, Barcelona, Spain
| | - Jordi Agramunt
- Departament de Química Orgànica i IBUB, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, E-08028, Barcelona, Spain
| | - Anna Grandas
- Departament de Química Orgànica i IBUB, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, E-08028, Barcelona, Spain
| | - Marc Fontecave
- Laboratoire de Chimie des Processus Biologiques, Collège de France, Sorbonne Université, CNRS UMR 8229, PSL Research University, 11 place Marcelin Berthelot, 75005, Paris, France
| | - Volker Schünemann
- Fachbreich Physik, Technische Universität Kaiserslautern, Erwin-Schrödinger-Str. 56, 67663, Kaiserslautern, Germany
| | - Sarah Cianférani
- Laboratoire de Spectrométrie de Masse BioOrganique, Université de Strasbourg, CNRS, IPHC UMR 7178, 67000, Strasbourg, France
| | - Christina Sizun
- Institut de Chimie des Substances Naturelles, CNRS, Université Paris Saclay, 91190, Gif-sur-Yvette, France
| | - Michel B Tolédano
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette cedex, France
| | - Benoit D'Autréaux
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette cedex, France.
| |
Collapse
|
12
|
Das D, Patra S, Bridwell-Rabb J, Barondeau DP. Mechanism of frataxin "bypass" in human iron-sulfur cluster biosynthesis with implications for Friedreich's ataxia. J Biol Chem 2019; 294:9276-9284. [PMID: 30975898 PMCID: PMC6556584 DOI: 10.1074/jbc.ra119.007716] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 04/10/2019] [Indexed: 11/06/2022] Open
Abstract
In humans, mitochondrial iron-sulfur cluster biosynthesis is an essential biochemical process mediated by the assembly complex consisting of cysteine desulfurase (NFS1), LYR protein (ISD11), acyl-carrier protein (ACP), and the iron-sulfur cluster assembly scaffold protein (ISCU2). The protein frataxin (FXN) is an allosteric activator that binds the assembly complex and stimulates the cysteine desulfurase and iron-sulfur cluster assembly activities. FXN depletion causes loss of activity of iron-sulfur-dependent enzymes and the development of the neurodegenerative disease Friedreich's ataxia. Recently, a mutation that suppressed the loss of the FXN homolog in Saccharomyces cerevisiae was identified that encodes an amino acid substitution equivalent to the human variant ISCU2 M140I. Here, we developed iron-sulfur cluster synthesis and transfer functional assays and determined that the human ISCU2 M140I variant can substitute for FXN in accelerating the rate of iron-sulfur cluster formation on the monothiol glutaredoxin (GRX5) acceptor protein. Incorporation of both FXN and the M140I substitution had an additive effect, suggesting an acceleration of distinct steps in iron-sulfur cluster biogenesis. In contrast to the canonical role of FXN in stimulating the formation of [2Fe-2S]-ISCU2 intermediates, we found here that the M140I substitution in ISCU2 promotes the transfer of iron-sulfur clusters to GRX5. Together, these results reveal an unexpected mechanism that replaces FXN-based stimulation of the iron-sulfur cluster biosynthetic pathway and suggest new strategies to overcome the loss of cellular FXN that may be relevant to the development of therapeutics for Friedreich's ataxia.
Collapse
Affiliation(s)
- Deepika Das
- From the Department of Chemistry, Texas A & M University, College Station, Texas 77842
| | - Shachin Patra
- From the Department of Chemistry, Texas A & M University, College Station, Texas 77842
| | | | - David P Barondeau
- From the Department of Chemistry, Texas A & M University, College Station, Texas 77842
| |
Collapse
|
13
|
Fox NG, Yu X, Feng X, Bailey HJ, Martelli A, Nabhan JF, Strain-Damerell C, Bulawa C, Yue WW, Han S. Structure of the human frataxin-bound iron-sulfur cluster assembly complex provides insight into its activation mechanism. Nat Commun 2019; 10:2210. [PMID: 31101807 PMCID: PMC6525205 DOI: 10.1038/s41467-019-09989-y] [Citation(s) in RCA: 100] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 04/05/2019] [Indexed: 12/13/2022] Open
Abstract
The core machinery for de novo biosynthesis of iron-sulfur clusters (ISC), located in the mitochondria matrix, is a five-protein complex containing the cysteine desulfurase NFS1 that is activated by frataxin (FXN), scaffold protein ISCU, accessory protein ISD11, and acyl-carrier protein ACP. Deficiency in FXN leads to the loss-of-function neurodegenerative disorder Friedreich's ataxia (FRDA). Here the 3.2 Å resolution cryo-electron microscopy structure of the FXN-bound active human complex, containing two copies of the NFS1-ISD11-ACP-ISCU-FXN hetero-pentamer, delineates the interactions of FXN with other component proteins of the complex. FXN binds at the interface of two NFS1 and one ISCU subunits, modifying the local environment of a bound zinc ion that would otherwise inhibit NFS1 activity in complexes without FXN. Our structure reveals how FXN facilitates ISC production through stabilizing key loop conformations of NFS1 and ISCU at the protein-protein interfaces, and suggests how FRDA clinical mutations affect complex formation and FXN activation.
Collapse
Affiliation(s)
- Nicholas G Fox
- Structural Genomics Consortium, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, OX3 7DQ, UK
- Merck & Co, 2000 Galloping Hill Rd, Kenilworth, NJ, 07033, USA
| | - Xiaodi Yu
- Discovery Sciences, Worldwide Research and Development, Pfizer Inc., Eastern Point Road, Groton, CT, 06340, USA
- SMPS, Janssen Research and Development, 1400 McKean Rd, Spring House, PA, 19477, USA
| | - Xidong Feng
- Discovery Sciences, Worldwide Research and Development, Pfizer Inc., Eastern Point Road, Groton, CT, 06340, USA
| | - Henry J Bailey
- Structural Genomics Consortium, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, OX3 7DQ, UK
| | - Alain Martelli
- Rare Disease Research Unit, Worldwide Research and Development, Pfizer Inc., 610 Main Street, Cambridge, MA, 02139, USA
| | - Joseph F Nabhan
- Rare Disease Research Unit, Worldwide Research and Development, Pfizer Inc., 610 Main Street, Cambridge, MA, 02139, USA
| | - Claire Strain-Damerell
- Structural Genomics Consortium, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, OX3 7DQ, UK
| | - Christine Bulawa
- Rare Disease Research Unit, Worldwide Research and Development, Pfizer Inc., 610 Main Street, Cambridge, MA, 02139, USA
| | - Wyatt W Yue
- Structural Genomics Consortium, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, OX3 7DQ, UK.
| | - Seungil Han
- Discovery Sciences, Worldwide Research and Development, Pfizer Inc., Eastern Point Road, Groton, CT, 06340, USA.
| |
Collapse
|
14
|
Puglisi R, Pastore A. The role of chaperones in iron-sulfur cluster biogenesis. FEBS Lett 2018; 592:4011-4019. [PMID: 30194723 PMCID: PMC6506825 DOI: 10.1002/1873-3468.13245] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 09/03/2018] [Accepted: 09/05/2018] [Indexed: 11/10/2022]
Abstract
Iron–sulfur cluster biogenesis is a complex process mediated by numerous proteins among which two from bacteria chaperones, called HscB and HscA in bacteria. They are highly conserved up to eukaryotes and homologous to DnaJ and DnaK, respectively, but with specific differences. As compared with other chaperones, HscB and HscA have escaped attention and relatively little is known about their functions. After briefly introducing the various chaperone families, we reviewed here the current structural and functional knowledge HscA and HscB and on their role in cluster formation. We critically evaluated the literature and highlighted the weak aspects which will require more attention in the future. We sincerely hope that this study will inspire new interest on this important and interesting system.
Collapse
Affiliation(s)
- Rita Puglisi
- UK Dementia Research Institute at King's College London, London, UK.,The Wohl Institute at King's College London, London, UK
| | - Annalisa Pastore
- UK Dementia Research Institute at King's College London, London, UK.,The Wohl Institute at King's College London, London, UK.,Department of Molecular Medicine, University of Pavia, Pavia, Italy
| |
Collapse
|
15
|
NMR as a Tool to Investigate the Processes of Mitochondrial and Cytosolic Iron-Sulfur Cluster Biosynthesis. Molecules 2018; 23:molecules23092213. [PMID: 30200358 PMCID: PMC6205161 DOI: 10.3390/molecules23092213] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 08/03/2018] [Accepted: 08/20/2018] [Indexed: 12/15/2022] Open
Abstract
Iron-sulfur (Fe-S) clusters, the ubiquitous protein cofactors found in all kingdoms of life, perform a myriad of functions including nitrogen fixation, ribosome assembly, DNA repair, mitochondrial respiration, and metabolite catabolism. The biogenesis of Fe-S clusters is a multi-step process that involves the participation of many protein partners. Recent biophysical studies, involving X-ray crystallography, nuclear magnetic resonance (NMR) spectroscopy, mass spectrometry (MS), and small angle X-ray scattering (SAXS), have greatly improved our understanding of these steps. In this review, after describing the biological importance of iron sulfur proteins, we focus on the contributions of NMR spectroscopy has made to our understanding of the structures, dynamics, and interactions of proteins involved in the biosynthesis of Fe-S cluster proteins.
Collapse
|