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Schüren AO, Ridgway BM, Di Salvo F, Carella LM, Gramm VK, Metzger E, Doctorovich F, Rentschler E, Schünemann V, Ruschewitz U, Klein A. Structural insight into halide-coordinated [Fe 4S 4X nY 4-n] 2- clusters (X, Y = Cl, Br, I) by XRD and Mössbauer spectroscopy. Dalton Trans 2023; 52:1277-1290. [PMID: 36621931 DOI: 10.1039/d2dt03203a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Iron sulphur halide clusters [Fe4S4Br4]2- and [Fe4S4X2Y2]2- (X, Y = Cl, Br, I) were obtained in excellent yields (77 to 78%) and purity from [Fe(CO)5], elemental sulphur, I2 and benzyltrimethylammonium (BTMA+) iodide, bromide and chloride. Single crystals of (BTMA)2[Fe4S4Br4] (1), (BTMA)2[Fe4S4Br2Cl2] (2), (BTMA)2[Fe4S4Cl2I2] (3), and (BTMA)2[Fe4S4Br2I2] (4) were isostructural to the previously reported (BTMA)2[Fe4S4I4] (5) (monoclinic, Cc). Instead of the chloride cubane cluster [Fe4S4Cl4]2-, we found the prismane-shaped cluster (BTMA)3[Fe6S6Cl6] (6) (P1̄). 57Fe Mössbauer spectroscopy indicates complete delocalisation with Fe2.5+ oxidation states for all iron atoms. Magnetic measurements showed small χMT values at 298 K ranging from 1.12 to 1.54 cm3 K mol-1, indicating the dominant antiferromagnetic exchange interactions. With decreasing temperature, the χMT values decreased to reach a plateau at around 100 K. From about 20 K, the values drop significantly. Fitting the data in the Heisenberg-Dirac-van Vleck (HDvV) as well as the Heisenberg Double Exchange (HDE) formalism confirmed the delocalisation and antiferromagnetic coupling assumed from Mössbauer spectroscopy.
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Affiliation(s)
- Andreas O Schüren
- Universität zu Köln, Mathematisch-Naturwissenschaftliche Fakultät, Department für Chemie, Institut für Anorganische Chemie, Greinstraße 6, D-50939 Köln, Germany. .,INQUIMAE-CONICET-Universidad de Buenos Aires, Intendente Güiraldes 2160, Pabellón 2, Piso 3, C1428EGA, Buenos Aires, Argentina
| | - Benjamin M Ridgway
- INQUIMAE-CONICET-Universidad de Buenos Aires, Intendente Güiraldes 2160, Pabellón 2, Piso 3, C1428EGA, Buenos Aires, Argentina
| | - Florencia Di Salvo
- INQUIMAE-CONICET-Universidad de Buenos Aires, Intendente Güiraldes 2160, Pabellón 2, Piso 3, C1428EGA, Buenos Aires, Argentina.,Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Inorgánica, Analítica y Química Física, Intendente Güiraldes 2160, Pabellón 2, Piso 3, C1428EGA, Buenos Aires, Argentina
| | - Luca M Carella
- Johannes Gutenberg Universität Mainz, Department Chemie, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Verena K Gramm
- Universität zu Köln, Mathematisch-Naturwissenschaftliche Fakultät, Department für Chemie, Institut für Anorganische Chemie, Greinstraße 6, D-50939 Köln, Germany.
| | - Elisa Metzger
- TU Kaiserlautern Department of Physics, 67663 Kaiserlautern, Germany
| | - Fabio Doctorovich
- INQUIMAE-CONICET-Universidad de Buenos Aires, Intendente Güiraldes 2160, Pabellón 2, Piso 3, C1428EGA, Buenos Aires, Argentina.,Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Inorgánica, Analítica y Química Física, Intendente Güiraldes 2160, Pabellón 2, Piso 3, C1428EGA, Buenos Aires, Argentina
| | - Eva Rentschler
- Johannes Gutenberg Universität Mainz, Department Chemie, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Volker Schünemann
- TU Kaiserlautern Department of Physics, 67663 Kaiserlautern, Germany
| | - Uwe Ruschewitz
- Universität zu Köln, Mathematisch-Naturwissenschaftliche Fakultät, Department für Chemie, Institut für Anorganische Chemie, Greinstraße 6, D-50939 Köln, Germany.
| | - Axel Klein
- Universität zu Köln, Mathematisch-Naturwissenschaftliche Fakultät, Department für Chemie, Institut für Anorganische Chemie, Greinstraße 6, D-50939 Köln, Germany.
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Zanello P. The competition between chemistry and biology in assembling iron–sulfur derivatives. Molecular structures and electrochemistry. Part V. {[Fe4S4](SCysγ)4} proteins. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2016.10.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Frielingsdorf S, Fritsch J, Schmidt A, Hammer M, Löwenstein J, Siebert E, Pelmenschikov V, Jaenicke T, Kalms J, Rippers Y, Lendzian F, Zebger I, Teutloff C, Kaupp M, Bittl R, Hildebrandt P, Friedrich B, Lenz O, Scheerer P. Reversible [4Fe-3S] cluster morphing in an O2-tolerant [NiFe] hydrogenase. Nat Chem Biol 2014; 10:378-85. [DOI: 10.1038/nchembio.1500] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Accepted: 03/13/2014] [Indexed: 12/27/2022]
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Liaw WF, Homg YC, Ou DS, Lee GH, Peng SM. Reactivity offac-[PPN][Fe(CO)3(TePh)3]: Structure of Fe2(μTePh)2(NO)4. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.199300057] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Characterization of a unique [FeS] cluster in the electron transfer chain of the oxygen tolerant [NiFe] hydrogenase from Aquifex aeolicus. Proc Natl Acad Sci U S A 2011; 108:6097-102. [PMID: 21444783 DOI: 10.1073/pnas.1100610108] [Citation(s) in RCA: 136] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Iron-sulfur clusters are versatile electron transfer cofactors, ubiquitous in metalloenzymes such as hydrogenases. In the oxygen-tolerant Hydrogenase I from Aquifex aeolicus such electron "wires" form a relay to a diheme cytb, an integral part of a respiration pathway for the reduction of O(2) to water. Amino acid sequence comparison with oxygen-sensitive hydrogenases showed conserved binding motifs for three iron-sulfur clusters, the nature and properties of which were unknown so far. Electron paramagnetic resonance spectra exhibited complex signals that disclose interesting features and spin-coupling patterns; by redox titrations three iron-sulfur clusters were identified in their usual redox states, a [3Fe4S] and two [4Fe4S], but also a unique high-potential (HP) state was found. On the basis of (57)Fe Mössbauer spectroscopy we attribute this HP form to a superoxidized state of the [4Fe4S] center proximal to the [NiFe] site. The unique environment of this cluster, characterized by a surplus cysteine coordination, is able to tune the redox potentials and make it compliant with the [4Fe4S](3+) state. It is actually the first example of a biological [4Fe4S] center that physiologically switches between 3+, 2+, and 1+ oxidation states within a very small potential range. We suggest that the (1 + /2+) redox couple serves the classical electron transfer reaction, whereas the superoxidation step is associated with a redox switch against oxidative stress.
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Wang R, Xu W, Zhang J, Li L. A new hexanuclear iron-selenium nitrosyl cluster: primary exploration of the preparation methods, structure, and spectroscopic and electrochemical properties. Inorg Chem 2010; 49:4814-9. [PMID: 20459063 DOI: 10.1021/ic9014509] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new hexanuclear iron-selenium nitrosyl cluster, [(n-Bu)(4)N](2)[Fe(6)Se(6)(NO)(6)] (1), and a hexanuclear iron-sulfur nitrosyl cluster, [(n-Bu)(4)N](2)[Fe(6)S(6)(NO)(6)] (2), were synthesized by the solvent-thermal reactions of [(n-Bu)(4)N][Fe(CO)(3)NO] with selenium or sulfur in methanol, while a tetranuclear iron-sulfur nitrosyl cluster, (Me(4)N)[Fe(4)S(3)(NO)(7)] (3), was also prepared by the solvent-thermal reaction of FeCl(2).4H(2)O with thiourea in the presence of (CH(3))(4)NCl, NaNO(2), and methanol. Complexes 1-3 were characterized by IR, UV-vis, (1)H NMR, electrochemistry, and single-crystal X-ray diffraction analysis. IR spectra of complexes 1 and 2 show the characteristic NO stretching frequencies at 1694 and 1698 cm(-1), respectively, while the absorptions of complex 3 appear at 1799, 1744, and 1710 cm(-1). The UV-vis spectra of complexes 1-3 show different bands in the range of 259-562 nm, which are assigned to the transitions between orbitals delocalized over the Fe-S cluster, the ligand-to-metal charge transfer, pi*(NO)-d(Fe), and the metal-to-ligand charge transfer, d(Fe)-pi*(NO). Single-crystal X-ray structural analysis reveals that complex 1 crystallizes in the monoclinic P2(1)/n space group with two molecules per unit cell. Two parallel "chair-shaped" structures, consisting of three iron and three selenium atoms, are connected by Fe-Se bonds with an average distance of 2.341 A; each iron center is bonded to three selenium atoms and a nitrogen atom from the nitrosyl ligand with a pseudotetrahedral center geometry. Cyclic voltammograms of complexes 1 and 2 display two cathodic and three anodic current peaks with an unusually strong cathodic peak. Further electrochemical investigations demonstrated that the intensity of the unusually strong peak is a result of at least three processes. One is the quasi-reversible reduction, and the other two are from an irreversible electrochemical process, in which the compound goes through a typical electron transfer and chemical reaction mechanism. Compound 3 shows three quasi-reversible reductions.
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Affiliation(s)
- Rongming Wang
- Department of Chemistry and Biochemistry, California State University, Long Beach, 1250 Bellflower Boulevard, Long Beach, California 90840, USA.
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Gámiz-Hernández AP, Galstyan AS, Knapp EW. Understanding Rubredoxin Redox Potentials: Role of H-Bonds on Model Complexes. J Chem Theory Comput 2009; 5:2898-908. [DOI: 10.1021/ct900328c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ana Patricia Gámiz-Hernández
- Institute of Chemistry and Biochemistry, Department of Biology, Chemistry, and Pharmacy, Freie Universität Berlin, Fabeckstrasse 36a, D-14195 Berlin, Germany
| | - Artur S. Galstyan
- Institute of Chemistry and Biochemistry, Department of Biology, Chemistry, and Pharmacy, Freie Universität Berlin, Fabeckstrasse 36a, D-14195 Berlin, Germany
| | - Ernst-Walter Knapp
- Institute of Chemistry and Biochemistry, Department of Biology, Chemistry, and Pharmacy, Freie Universität Berlin, Fabeckstrasse 36a, D-14195 Berlin, Germany
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Ballmann J, Sun X, Dechert S, Schneider B, Meyer F. A convenient ligand exchange pathway to [2Fe–2S] ferredoxin analogues. Dalton Trans 2009:4908-17. [DOI: 10.1039/b901242g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Ballmann J, Dechert S, Bill E, Ryde U, Meyer F. Secondary Bonding Interactions in Biomimetic [2Fe−2S] Clusters. Inorg Chem 2008; 47:1586-96. [DOI: 10.1021/ic702095a] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Joachim Ballmann
- Institut für Anorganische Chemie, Georg-August-Universität, Tammannstrasse 4, D-37077 Göttingen, Germany, Max-Planck-Institut für Bioanorganische Chemie, Stiftstrasse 34-36, D-45470 Mülheim an der Ruhr, Germany, and Department of Theoretical Chemistry, Lund University, Chemical Centre, S-22100 Lund, Sweden
| | - Sebastian Dechert
- Institut für Anorganische Chemie, Georg-August-Universität, Tammannstrasse 4, D-37077 Göttingen, Germany, Max-Planck-Institut für Bioanorganische Chemie, Stiftstrasse 34-36, D-45470 Mülheim an der Ruhr, Germany, and Department of Theoretical Chemistry, Lund University, Chemical Centre, S-22100 Lund, Sweden
| | - Eckhard Bill
- Institut für Anorganische Chemie, Georg-August-Universität, Tammannstrasse 4, D-37077 Göttingen, Germany, Max-Planck-Institut für Bioanorganische Chemie, Stiftstrasse 34-36, D-45470 Mülheim an der Ruhr, Germany, and Department of Theoretical Chemistry, Lund University, Chemical Centre, S-22100 Lund, Sweden
| | - Ulf Ryde
- Institut für Anorganische Chemie, Georg-August-Universität, Tammannstrasse 4, D-37077 Göttingen, Germany, Max-Planck-Institut für Bioanorganische Chemie, Stiftstrasse 34-36, D-45470 Mülheim an der Ruhr, Germany, and Department of Theoretical Chemistry, Lund University, Chemical Centre, S-22100 Lund, Sweden
| | - Franc Meyer
- Institut für Anorganische Chemie, Georg-August-Universität, Tammannstrasse 4, D-37077 Göttingen, Germany, Max-Planck-Institut für Bioanorganische Chemie, Stiftstrasse 34-36, D-45470 Mülheim an der Ruhr, Germany, and Department of Theoretical Chemistry, Lund University, Chemical Centre, S-22100 Lund, Sweden
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Dey A, Jenney FE, Adams MWW, Babini E, Takahashi Y, Fukuyama K, Hodgson KO, Hedman B, Solomon EI. Solvent tuning of electrochemical potentials in the active sites of HiPIP versus ferredoxin. Science 2007; 318:1464-8. [PMID: 18048692 DOI: 10.1126/science.1147753] [Citation(s) in RCA: 144] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
A persistent puzzle in the field of biological electron transfer is the conserved iron-sulfur cluster motif in both high potential iron-sulfur protein (HiPIP) and ferredoxin (Fd) active sites. Despite this structural similarity, HiPIPs react oxidatively at physiological potentials, whereas Fds are reduced. Sulfur K-edge x-ray absorption spectroscopy uncovers the substantial influence of hydration on this variation in reactivity. Fe-S covalency is much lower in natively hydrated Fd active sites than in HiPIPs but increases upon water removal; similarly, HiPIP covalency decreases when unfolding exposes an otherwise hydrophobically shielded active site to water. Studies on model compounds and accompanying density functional theory calculations support a correlation of Fe-S covalency with ease of oxidation and therefore suggest that hydration accounts for most of the difference between Fd and HiPIP reduction potentials.
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Affiliation(s)
- Abhishek Dey
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA
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11
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12
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Influence of charged microenvironment on redox potential and diffusion coefficient of [Fe4S4(SPh)4](NBu4)2 in DMF and inside CTAB film on electrode surface. J CHEM SCI 2005. [DOI: 10.1007/bf02708295] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Venkateswara Rao P, Holm RH. Synthetic Analogues of the Active Sites of Iron−Sulfur Proteins. Chem Rev 2004; 104:527-59. [PMID: 14871134 DOI: 10.1021/cr020615+] [Citation(s) in RCA: 412] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- P Venkateswara Rao
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA
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Kaiser JT, Clausen T, Bourenkow GP, Bartunik HD, Steinbacher S, Huber R. Crystal structure of a NifS-like protein from Thermotoga maritima: implications for iron sulphur cluster assembly. J Mol Biol 2000; 297:451-64. [PMID: 10715213 DOI: 10.1006/jmbi.2000.3581] [Citation(s) in RCA: 122] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
NifS-like proteins are ubiquitous, homodimeric, proteins which belong to the alpha-family of pyridoxal-5'-phoshate dependent enzymes. They are proposed to donate elementary sulphur, generated from cysteine, via a cysteinepersulphide intermediate during iron sulphur cluster biosynthesis, an important albeit not well understood process. Here, we report on the crystal structure of a NifS-like protein from the hyperthermophilic bacterium Thermotoga maritima (tmNifS) at 2.0 A resolution. The tmNifS is structured into two domains, the larger bearing the pyridoxal-5'-phosphate-binding active site, the smaller hosting the active site cysteine in the middle of a highly flexible loop, 12 amino acid residues in length. Once charged with sulphur the loop could possibly deliver S(0) directly to regions far remote from the protein. Based on the three-dimensional structures of the native as well as the substrate complexed form and on spectrophotometric results, a mechanism of sulphur activation is proposed. The His99, which stacks on top of the pyridoxal-5'-phosphate co-factor, is assigned a crucial role during the catalytic cycle by acting as an acid-base catalyst and is believed to have a pK(a) value depending on the co-factor redox state.
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Affiliation(s)
- J T Kaiser
- Max-Planck-Institut für Biochemie, Abteilung Strukturforschung, Am Klopferspitz 18a, Martinsried, D-82152, Germany
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Nakamoto M, Fukaishi K, Tagata T, Kambayashi H, Tanaka K. Determination of Basicity of Core X and Terminal Y Ligands (X, Y = S and Se) of Reduced, Oxidized, and Super-Oxidized Forms of [Fe4X4(YAd)4]2−(Ad = 1-Adamantyl) in Aqueous Solutions. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1999. [DOI: 10.1246/bcsj.72.407] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Segal BM, Hoveyda HR, Holm RH. Terminal Ligand Assignments Based on Trends in Metal−Ligand Bond Lengths of Cubane-Type [Fe4S4]2+,+ Clusters. Inorg Chem 1998. [DOI: 10.1021/ic980092h] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- B. M. Segal
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
| | - H. R. Hoveyda
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
| | - R. H. Holm
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
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Melnik, M, Vančová, V, Ondrejkovičová, I, E.Holloway, C. STRUCTURAL ASPECTS OF IRON COORDINATION COMPOUNDS : PART Π: DIMERIC AND OLIGOMERIC DERIVATIVES. REV INORG CHEM 1998. [DOI: 10.1515/revic.1998.18.1-2.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Le Pape L, Lamotte B, Mouesca JM, Rius G. Paramagnetic States of Four Iron−Four Sulfur Clusters. 2. Proton ENDOR Study of a 1+ State in an Asymmetrical Cluster. J Am Chem Soc 1997. [DOI: 10.1021/ja963350n] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Laurent Le Pape
- Contribution from the Département de Recherche Fondamentale sur la Matière Condensée, SCIB/SCPM, C.E.A./Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
| | - Bernard Lamotte
- Contribution from the Département de Recherche Fondamentale sur la Matière Condensée, SCIB/SCPM, C.E.A./Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
| | - Jean-Marie Mouesca
- Contribution from the Département de Recherche Fondamentale sur la Matière Condensée, SCIB/SCPM, C.E.A./Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
| | - Gérard Rius
- Contribution from the Département de Recherche Fondamentale sur la Matière Condensée, SCIB/SCPM, C.E.A./Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
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Le Pape L, Lamotte B, Mouesca JM, Rius G. Paramagnetic States of Four Iron−Four Sulfur Clusters. 1. EPR Single-Crystal Study of 3+ and 1+ Clusters of an Asymmetrical Model Compound and General Model for the Interpretation of the g-Tensors of These Two Redox States. J Am Chem Soc 1997. [DOI: 10.1021/ja963349o] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Laurent Le Pape
- Contribution from the Département de Recherche Fondamentale sur la Matière Condensée, SCIB/SCPM, C.E.A./Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
| | - Bernard Lamotte
- Contribution from the Département de Recherche Fondamentale sur la Matière Condensée, SCIB/SCPM, C.E.A./Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
| | - Jean-Marie Mouesca
- Contribution from the Département de Recherche Fondamentale sur la Matière Condensée, SCIB/SCPM, C.E.A./Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
| | - Gérard Rius
- Contribution from the Département de Recherche Fondamentale sur la Matière Condensée, SCIB/SCPM, C.E.A./Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
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Van Strijdonck GPF, Ten Have PTJH, Peiters MC, Van Der Lindenm JGM, Steggerda JJ, Nolte RJM. Subsite-Specific Reactions of a Cyclotriveratrylene [4Fe-4S] Cluster Complex. ACTA ACUST UNITED AC 1997. [DOI: 10.1002/cber.19971300819] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Iron-sulfur clusters: fascinating magnetic structures at the heart of ubiquitous proteins. ACTA ACUST UNITED AC 1997. [DOI: 10.1016/s1251-8069(99)80015-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Abstract
It was demonstrated that salicylic acid (SA) not only binds to catalase from differentiated higher plants and plant cell suspension cultures but also to those of fungi and animals. SA bound specifically to iron-containing enzymes, such as catalase, aconitase, lipoxidase and peroxidase, while not to iron-free plant enzymes. On the grounds of these experiments, the claim is further challenged that SA is a signalling compound and second messenger in plants that activates plant defense-related genes through elevated H2O2 levels by specifically inhibiting catalase activity. SA may just function as a phytoalexin.
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Affiliation(s)
- M Rüffer
- Lehrstuhl für Pharmazeutische Biologie, Ludwig-Maximilians-Universität München, Germany
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Beinert H, Kennedy MC. 19th Sir Hans Krebs lecture. Engineering of protein bound iron-sulfur clusters. A tool for the study of protein and cluster chemistry and mechanism of iron-sulfur enzymes. EUROPEAN JOURNAL OF BIOCHEMISTRY 1989; 186:5-15. [PMID: 2598939 DOI: 10.1111/j.1432-1033.1989.tb15170.x] [Citation(s) in RCA: 182] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
An increasing number of iron-sulfur (Fe-S) proteins are found in which the Fe-S cluster is not involved in net electron transfer, as it is in the majority of Fe-S proteins. Most of the former are (de)hydratases, of which the most extensively studied is aconitase. Approaches are described and discussed by which the Fe-S cluster of this enzyme could be brought into states of different structure, ligation, oxidation and isotope composition. The species, so obtained, provided the basis for spectroscopic and chemical investigations. Results from studies by protein chemistry, EPR, Mössbauer, 1H, 2H and 57Fe electron-nuclear double resonance spectroscopy are described. Conclusions, which bear on the electronic structure of the Fe-S cluster, enzyme-substrate interaction and the enzymatic mechanism, were derived from a synopsis of the recent work described here and of previous contributions from several laboratories. These conclusions are discussed and summarized in a final section.
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Affiliation(s)
- H Beinert
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee 53226
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McDermott AE, Yachandra VK, Guiles RD, Sauer K, Klein MP, Parrett KG, Golbeck JH. EXAFS structural study of FX, the low-potential Fe-S center in photosystem I. Biochemistry 1989; 28:8056-9. [PMID: 2690931 DOI: 10.1021/bi00446a013] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
We present iron extended X-ray absorption fine structure (EXAFS) spectra of a photosystem I core preparation containing FX, the very low potential iron-sulfur cluster in photosystem I. The preparation lacks FA and FB. The amplitude of Fe-Fe backscattering in the EXAFS spectrum indicates that FX may be a [4Fe-4S] cluster and is not a [2Fe-2S] cluster or clusters.
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Affiliation(s)
- A E McDermott
- Laboratory of Chemical Biodynamics, Lawrence Berkeley Laboratory, University of California, Berkeley 94720
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Nakamoto M, Tanaka K, Tanaka T. Redox-Linked Protonation of [Fe4X4(YR)4]2−(X,Y=S and Se; R=n-C12H25and C6H4-p-t-Bu) in Aqueous Solutions. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1988. [DOI: 10.1246/bcsj.61.4099] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Zanello P. Electrochemistry of metal-sulfur clusters: stereochemical consequences of thermodynamically characterized redox changes. Coord Chem Rev 1988. [DOI: 10.1016/0010-8545(88)80024-9] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Kent TA, Emptage MH, Merkle H, Kennedy MC, Beinert H, Münck E. Mössbauer studies of aconitase. Substrate and inhibitor binding, reaction intermediates, and hyperfine interactions of reduced 3Fe and 4Fe clusters. J Biol Chem 1985. [DOI: 10.1016/s0021-9258(18)88861-5] [Citation(s) in RCA: 78] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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31
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Garner CD, Nicholson JR, Clegg W. in-situ-Herstellung von 2-Sulfidophenolat-Liganden durch kupferkatalysierte Sauerstoffeinschiebung in Thiophenolat; Struktur von [PPh4]2[Mo2O5(SC6H4O)2]. Angew Chem Int Ed Engl 1984. [DOI: 10.1002/ange.19840961208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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