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Ashirbaev SS, Brás NF, Frei P, Liu K, Moser S, Zipse H. Redox-Mediated Amination of Pyrogallol-Based Polyphenols. Chemistry 2024; 30:e202303783. [PMID: 38029366 DOI: 10.1002/chem.202303783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 11/28/2023] [Accepted: 11/29/2023] [Indexed: 12/01/2023]
Abstract
Flavonoids are known to covalently modify amyloidogenic peptides by amination reactions. The underlying coupling process between polyphenols and N-nucleophiles is assessed by several in vitro and in silico approaches. The coupling reaction involves a sequence of oxidative dearomatization, amination, and reductive amination (ODARA) reaction steps. The C6-regioselectivity of the product is confirmed by crystallographic analysis. Under aqueous conditions, the reaction of baicalein with lysine derivatives yields C-N coupling as well as hydrolysis products of transient imine intermediates. The observed C-N coupling reactions work best for flavonoids combining a pyrogallol substructure with an electron-withdrawing group attached to the C4a-position. Thermodynamic properties such as bond dissociation energies also highlight the key role of pyrogallol units for the antioxidant ability. Combining the computed electronic properties and in vitro antioxidant assays suggests that the studied pyrogallol-containing flavonoids act by various radical-scavenging mechanisms working in synergy. Multivariate analysis indicates that a small number of descriptors for transient intermediates of the ODARA process generates a model with excellent performance (r=0.93) for the prediction of cross-coupling yields. The same model has been employed to predict novel antioxidant flavonoid-based molecules as potential covalent inhibitors, opening a new avenue to the design of therapeutically relevant anti-amyloid compounds.
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Affiliation(s)
- Salavat S Ashirbaev
- Department of Chemistry, Ludwig Maximilian University of Munich, Butenandtstraße 5-13, 81377, Munich, Germany
| | - Natércia F Brás
- Department of Chemistry, Ludwig Maximilian University of Munich, Butenandtstraße 5-13, 81377, Munich, Germany
- LAQV, REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre s/n, 4169-007, Porto, Portugal
| | - Patricia Frei
- Department of Pharmacy, Ludwig Maximilian University of Munich, Butenandtstraße 5-13, 81377, Munich, Germany
| | - Kuangjie Liu
- Department of Chemistry, Ludwig Maximilian University of Munich, Butenandtstraße 5-13, 81377, Munich, Germany
| | - Simone Moser
- Institute of Pharmacy, University of Innsbruck, Innrain 80-13, 6020, Innsbruck, Austria
| | - Hendrik Zipse
- Department of Chemistry, Ludwig Maximilian University of Munich, Butenandtstraße 5-13, 81377, Munich, Germany
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2
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Hedtke T, Mende M, Steenbock H, Brinckmann J, Menzel M, Hoehenwarter W, Pietzsch M, Groth T, Schmelzer CEH. Fabrication of Insoluble Elastin by Enzyme-Free Cross-Linking. Macromol Biosci 2023; 23:e2300203. [PMID: 37441796 DOI: 10.1002/mabi.202300203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/05/2023] [Accepted: 07/07/2023] [Indexed: 07/15/2023]
Abstract
Elastin is an essential extracellular matrix protein that enables tissues and organs such as arteries, lungs, and skin, which undergo continuous deformation, to stretch and recoil. Here, an approach to fabricating artificial elastin with close-to-native molecular and mechanical characteristics is described. Recombinantly produced tropoelastin are polymerized through coacervation and allysine-mediated cross-linking induced by pyrroloquinoline quinone (PQQ). A technique that allows the recovery and repeated use of PQQ for protein cross-linking by covalent attachment to magnetic Sepharose beads is developed. The produced material closely resembles natural elastin in its molecular, biochemical, and mechanical properties, enabled by the occurrence of the cross-linking amino acids desmosine, isodesmosine, and merodesmosine. It possesses elevated resistance against tryptic proteolysis, and its Young's modulus ranging between 1 and 2 MPa is similar to that of natural elastin. The approach described herein enables the engineering of mechanically resilient, elastin-like materials for biomedical applications.
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Affiliation(s)
- Tobias Hedtke
- Department of Biological and Macromolecular Materials, Fraunhofer Institute for Microstructure of Materials and Systems IMWS, 06120, Halle (Saale), Germany
- Institute of Pharmacy, Faculty of Natural Sciences I, Martin Luther University Halle-Wittenberg, Halle (Saale), 06120, Halle (Saale), Germany
| | - Mathias Mende
- Institute of Pharmacy, Faculty of Natural Sciences I, Martin Luther University Halle-Wittenberg, Halle (Saale), 06120, Halle (Saale), Germany
| | - Heiko Steenbock
- Institute of Virology and Cell Biology, University of Lübeck, 23562, Lübeck, Germany
| | - Jürgen Brinckmann
- Institute of Virology and Cell Biology, University of Lübeck, 23562, Lübeck, Germany
- Department of Dermatology, University of Lübeck, 23538, Lübeck, Germany
| | - Matthias Menzel
- Department of Biological and Macromolecular Materials, Fraunhofer Institute for Microstructure of Materials and Systems IMWS, 06120, Halle (Saale), Germany
| | - Wolfgang Hoehenwarter
- Proteome Analytics Research Group, Leibniz Institute for Plant Biochemistry, 06120, Halle (Saale), Germany
| | - Markus Pietzsch
- Institute of Pharmacy, Faculty of Natural Sciences I, Martin Luther University Halle-Wittenberg, Halle (Saale), 06120, Halle (Saale), Germany
- Institute of Applied Dermatopharmacy at the Martin Luther University Halle-Wittenberg (IADP), 06120, Halle (Saale), Germany
| | - Thomas Groth
- Institute of Pharmacy, Faculty of Natural Sciences I, Martin Luther University Halle-Wittenberg, Halle (Saale), 06120, Halle (Saale), Germany
- Interdisciplinary Center of Materials Science, Martin Luther University Halle-Wittenberg, 06120, Halle (Saale), Germany
| | - Christian E H Schmelzer
- Department of Biological and Macromolecular Materials, Fraunhofer Institute for Microstructure of Materials and Systems IMWS, 06120, Halle (Saale), Germany
- Institute of Pharmacy, Faculty of Natural Sciences I, Martin Luther University Halle-Wittenberg, Halle (Saale), 06120, Halle (Saale), Germany
- Institute of Applied Dermatopharmacy at the Martin Luther University Halle-Wittenberg (IADP), 06120, Halle (Saale), Germany
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Bio-inspired lanthanum-ortho-quinone catalysis for aerobic alcohol oxidation: semi-quinone anionic radical as redox ligand. Nat Commun 2022; 13:428. [PMID: 35058479 PMCID: PMC8776754 DOI: 10.1038/s41467-022-28102-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 01/04/2022] [Indexed: 11/29/2022] Open
Abstract
Oxidation reactions are fundamental transformations in organic synthesis and chemical industry. With oxygen or air as terminal oxidant, aerobic oxidation catalysis provides the most sustainable and economic oxidation processes. Most aerobic oxidation catalysis employs redox metal as its active center. While nature provides non-redox metal strategy as in pyrroloquinoline quinone (PQQ)-dependent methanol dehydrogenases (MDH), such an effective chemical version is unknown. Inspired by the recently discovered rare earth metal-dependent enzyme Ln-MDH, here we show that an open-shell semi-quinone anionic radical species in complexing with lanthanum could serve as a very efficient aerobic oxidation catalyst under ambient conditions. In this catalyst, the lanthanum(III) ion serves only as a Lewis acid promoter and the redox process occurs exclusively on the semiquinone ligand. The catalysis is initiated by 1e--reduction of lanthanum-activated ortho-quinone to a semiquinone-lanthanum complex La(SQ-.)2, which undergoes a coupled O-H/C-H (PCHT: proton coupled hydride transfer) dehydrogenation for aerobic oxidation of alcohols with up to 330 h−1 TOF. A decade ago the first rare-earth-metal dependent enzyme was discovered, in which a non-redox lanthanide ion is central in the active site of a methanol dehydrogenase. Inspired by this discovery, here the authors show that an open-shell semi-quinone anionic radical species, complexed with lanthanum, could serve as a very efficient aerobic oxidation catalyst under ambient conditions.
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Chukwubuikem A, Berger C, Mady A, Rosenbaum MA. Role of phenazine-enzyme physiology for current generation in a bioelectrochemical system. Microb Biotechnol 2021; 14:1613-1626. [PMID: 34000093 PMCID: PMC8313257 DOI: 10.1111/1751-7915.13827] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 04/14/2021] [Accepted: 04/27/2021] [Indexed: 02/06/2023] Open
Abstract
Pseudomonas aeruginosa produces phenazine-1-carboxylic acid (PCA) and pyocyanin (PYO), which aid its anaerobic survival by mediating electron transfer to distant oxygen. These natural secondary metabolites are being explored in biotechnology to mediate electron transfer to the anode of bioelectrochemical systems. A major challenge is that only a small fraction of electrons from microbial substrate conversion is recovered. It remained unclear whether phenazines can re-enter the cell and thus, if the electrons accessed by the phenazines arise mainly from cytoplasmic or periplasmic pathways. Here, we prove that the periplasmic glucose dehydrogenase (Gcd) of P. aeruginosa and P. putida is involved in the reduction of natural phenazines. PYO displayed a 60-fold faster enzymatic reduction than PCA; PCA was, however, more stable for long-term electron shuttling to the anode. Evaluation of a Gcd knockout and overexpression strain showed that up to 9% of the anodic current can be designated to this enzymatic reaction. We further assessed phenazine uptake with the aid of two molecular biosensors, which experimentally confirm the phenazines' ability to re-enter the cytoplasm. These findings significantly advance the understanding of the (electro) physiology of phenazines for future tailoring of phenazine electron discharge in biotechnological applications.
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Affiliation(s)
- Anthony Chukwubuikem
- Bio Pilot PlantLeibniz Institute for Natural Product Research and Infection Biology – Hans‐Knöll‐Institute (HKI)JenaGermany
- Faculty of Biological SciencesFriedrich Schiller University (FSU)JenaGermany
| | - Carola Berger
- Faculty of Biological SciencesFriedrich Schiller University (FSU)JenaGermany
| | - Ahmed Mady
- Faculty of Biological SciencesFriedrich Schiller University (FSU)JenaGermany
| | - Miriam A. Rosenbaum
- Bio Pilot PlantLeibniz Institute for Natural Product Research and Infection Biology – Hans‐Knöll‐Institute (HKI)JenaGermany
- Faculty of Biological SciencesFriedrich Schiller University (FSU)JenaGermany
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Thorve PR, Maji B. Deaminative Olefination of Methyl N-Heteroarenes by an Amine Oxidase Inspired Catalyst. Org Lett 2021; 23:542-547. [DOI: 10.1021/acs.orglett.0c04060] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pradip Ramdas Thorve
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
| | - Biplab Maji
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
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6
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Thorve PR, Maji B. Aerobic primary and secondary amine oxidation cascade by a copper amine oxidase inspired catalyst. Catal Sci Technol 2021. [DOI: 10.1039/d0cy01764g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A CAO inspired catalyst catalyzed the cascade aerobic oxidation of primary and secondary amines for the synthesis of quinazolin-4(3H)-one core in high yields. Like the natural CAOs, a copper ion improves the o-quinone cofactor's catalytic activity.
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Affiliation(s)
- Pradip Ramdas Thorve
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur 741246
- India
| | - Biplab Maji
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur 741246
- India
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7
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Ghosh S, Dhanasingh, I, Ryu J, Kim SW, Lee SH. Crystal Structure of Cytochrome cL from the Aquatic Methylotrophic Bacterium Methylophaga aminisulfidivorans MP T. J Microbiol Biotechnol 2020; 30:1261-1271. [PMID: 32627749 PMCID: PMC9728263 DOI: 10.4014/jmb.2006.06029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 06/29/2020] [Accepted: 07/01/2020] [Indexed: 12/15/2022]
Abstract
Cytochrome cL (CytcL) is an essential protein in the process of methanol oxidation in methylotrophs. It receives an electron from the pyrroloquinoline quinone (PQQ) cofactor of methanol dehydrogenase (MDH) to produce formaldehyde. The direct electron transfer mechanism between CytcL and MDH remains unknown due to the lack of structural information. To help gain a better understanding of the mechanism, we determined the first crystal structure of heme c containing CytcL from the aquatic methylotrophic bacterium Methylophaga aminisulfidivorans MPT at 2.13 Å resolution. The crystal structure of Ma-CytcL revealed its unique features compared to those of the terrestrial homologues. Apart from Fe in heme, three additional metal ion binding sites for Na+ , Ca+ , and Fe2+ were found, wherein the ions mostly formed coordination bonds with the amino acid residues on the loop (G93-Y111) that interacts with heme. Therefore, these ions seemed to enhance the stability of heme insertion by increasing the loop's steadiness. The basic N-terminal end, together with helix α4 and loop (G126 to Y136), contributed positive charge to the region. In contrast, the acidic C-terminal end provided a negatively charged surface, yielding several electrostatic contact points with partner proteins for electron transfer. These exceptional features of Ma-CytcL, along with the structural information of MDH, led us to hypothesize the need for an adapter protein bridging MDH to CytcL within appropriate proximity for electron transfer. With this knowledge in mind, the methanol oxidation complex reconstitution in vitro could be utilized to produce metabolic intermediates at the industry level.
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Affiliation(s)
- Suparna Ghosh
- Department of Cellular and Molecular Medicine, Chosun University School of Medicine, Gwangju 61452, Republic of Korea,Department of Biomedical Sciences, Graduate School of Chosun University, Gwangju 61452, Republic of Korea
| | - Immanuel Dhanasingh,
- Department of Cellular and Molecular Medicine, Chosun University School of Medicine, Gwangju 61452, Republic of Korea,Department of Biomedical Sciences, Graduate School of Chosun University, Gwangju 61452, Republic of Korea
| | - Jaewon Ryu
- Department of Energy Convergence, Graduate School of Chosun University, Gwangju 61452, Republic of Korea
| | - Si Wouk Kim
- Department of Environmental Engineering, Chosun University, Gwangju 61452, Republic of Korea,Department of Energy Convergence, Graduate School of Chosun University, Gwangju 61452, Republic of Korea
| | - Sung Haeng Lee
- Department of Cellular and Molecular Medicine, Chosun University School of Medicine, Gwangju 61452, Republic of Korea,Department of Biomedical Sciences, Graduate School of Chosun University, Gwangju 61452, Republic of Korea,Corresponding author Phone: +82-62-230-6381 Fax: +82-62-228-7791 E-mail:
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8
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Prejanò M, Russo N, Marino T. How Lanthanide Ions Affect the Addition–Elimination Step of Methanol Dehydrogenases. Chemistry 2020; 26:11334-11339. [DOI: 10.1002/chem.202001855] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 05/04/2020] [Indexed: 01/15/2023]
Affiliation(s)
- Mario Prejanò
- Dipartimento di Chimica e Tecnologie ChimicheUniversità della Calabria 87036 Arcavacata di Rende (CS Italy
| | - Nino Russo
- Dipartimento di Chimica e Tecnologie ChimicheUniversità della Calabria 87036 Arcavacata di Rende (CS Italy
| | - Tiziana Marino
- Dipartimento di Chimica e Tecnologie ChimicheUniversità della Calabria 87036 Arcavacata di Rende (CS Italy
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9
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Bollella P, Katz E. Enzyme-Based Biosensors: Tackling Electron Transfer Issues. SENSORS (BASEL, SWITZERLAND) 2020; 20:E3517. [PMID: 32575916 PMCID: PMC7349488 DOI: 10.3390/s20123517] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 06/18/2020] [Accepted: 06/19/2020] [Indexed: 12/25/2022]
Abstract
This review summarizes the fundamentals of the phenomenon of electron transfer (ET) reactions occurring in redox enzymes that were widely employed for the development of electroanalytical devices, like biosensors, and enzymatic fuel cells (EFCs). A brief introduction on the ET observed in proteins/enzymes and its paradigms (e.g., classification of ET mechanisms, maximal distance at which is observed direct electron transfer, etc.) are given. Moreover, the theoretical aspects related to direct electron transfer (DET) are resumed as a guideline for newcomers to the field. Snapshots on the ET theory formulated by Rudolph A. Marcus and on the mathematical model used to calculate the ET rate constant formulated by Laviron are provided. Particular attention is devoted to the case of glucose oxidase (GOx) that has been erroneously classified as an enzyme able to transfer electrons directly. Thereafter, all tools available to investigate ET issues are reported addressing the discussions toward the development of new methodology to tackle ET issues. In conclusion, the trends toward upcoming practical applications are suggested as well as some directions in fundamental studies of bioelectrochemistry.
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Affiliation(s)
- Paolo Bollella
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York, NY 13699-5810, USA;
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10
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Aylward FO, Santoro AE. Heterotrophic Thaumarchaea with Small Genomes Are Widespread in the Dark Ocean. mSystems 2020; 5:e00415-20. [PMID: 32546674 PMCID: PMC7300363 DOI: 10.1128/msystems.00415-20] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 05/28/2020] [Indexed: 01/01/2023] Open
Abstract
The Thaumarchaeota is a diverse archaeal phylum comprising numerous lineages that play key roles in global biogeochemical cycling, particularly in the ocean. To date, all genomically characterized marine thaumarchaea are reported to be chemolithoautotrophic ammonia oxidizers. In this study, we report a group of putatively heterotrophic marine thaumarchaea (HMT) with small genome sizes that is globally abundant in the mesopelagic, apparently lacking the ability to oxidize ammonia. We assembled five HMT genomes from metagenomic data and show that they form a deeply branching sister lineage to the ammonia-oxidizing archaea (AOA). We identify this group in metagenomes from mesopelagic waters in all major ocean basins, with abundances reaching up to 6% of that of AOA. Surprisingly, we predict the HMT have small genomes of ∼1 Mbp, and our ancestral state reconstruction indicates this lineage has undergone substantial genome reduction compared to other related archaea. The genomic repertoire of HMT indicates a versatile metabolism for aerobic chemoorganoheterotrophy that includes a divergent form III-a RuBisCO, a 2M respiratory complex I that has been hypothesized to increase energetic efficiency, and a three-subunit heme-copper oxidase complex IV that is absent from AOA. We also identify 21 pyrroloquinoline quinone (PQQ)-dependent dehydrogenases that are predicted to supply reducing equivalents to the electron transport chain and are among the most highly expressed HMT genes, suggesting these enzymes play an important role in the physiology of this group. Our results suggest that heterotrophic members of the Thaumarchaeota are widespread in the ocean and potentially play key roles in global chemical transformations.IMPORTANCE It has been known for many years that marine Thaumarchaeota are abundant constituents of dark ocean microbial communities, where their ability to couple ammonia oxidation and carbon fixation plays a critical role in nutrient dynamics. In this study, we describe an abundant group of putatively heterotrophic marine Thaumarchaeota (HMT) in the ocean with physiology distinct from those of their ammonia-oxidizing relatives. HMT lack the ability to oxidize ammonia and fix carbon via the 3-hydroxypropionate/4-hydroxybutyrate pathway but instead encode a form III-a RuBisCO and diverse PQQ-dependent dehydrogenases that are likely used to conserve energy in the dark ocean. Our work expands the scope of known diversity of Thaumarchaeota in the ocean and provides important insight into a widespread marine lineage.
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Affiliation(s)
- Frank O Aylward
- Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia, USA
| | - Alyson E Santoro
- Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, California, USA
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Good NM, Fellner M, Demirer K, Hu J, Hausinger RP, Martinez-Gomez NC. Lanthanide-dependent alcohol dehydrogenases require an essential aspartate residue for metal coordination and enzymatic function. J Biol Chem 2020; 295:8272-8284. [PMID: 32366463 PMCID: PMC7294098 DOI: 10.1074/jbc.ra120.013227] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/30/2020] [Indexed: 01/07/2023] Open
Abstract
The lanthanide elements (Ln3+), those with atomic numbers 57-63 (excluding promethium, Pm3+), form a cofactor complex with pyrroloquinoline quinone (PQQ) in bacterial XoxF methanol dehydrogenases (MDHs) and ExaF ethanol dehydrogenases (EDHs), expanding the range of biological elements and opening novel areas of metabolism and ecology. Other MDHs, known as MxaFIs, are related in sequence and structure to these proteins, yet they instead possess a Ca2+-PQQ cofactor. An important missing piece of the Ln3+ puzzle is defining what features distinguish enzymes that use Ln3+-PQQ cofactors from those that do not. Here, using XoxF1 MDH from the model methylotrophic bacterium Methylorubrum extorquens AM1, we investigated the functional importance of a proposed lanthanide-coordinating aspartate residue. We report two crystal structures of XoxF1, one with and another without PQQ, both with La3+ bound in the active-site region and coordinated by Asp320 Using constructs to produce either recombinant XoxF1 or its D320A variant, we show that Asp320 is needed for in vivo catalytic function, in vitro activity, and La3+ coordination. XoxF1 and XoxF1 D320A, when produced in the absence of La3+, coordinated Ca2+ but exhibited little or no catalytic activity. We also generated the parallel substitution in ExaF to produce ExaF D319S and found that this variant loses the capacity for efficient ethanol oxidation with La3+ These results provide evidence that a Ln3+-coordinating aspartate is essential for the enzymatic functions of XoxF MDHs and ExaF EDHs, supporting the notion that sequences of these enzymes, and the genes that encode them, are markers for Ln3+ metabolism.
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Affiliation(s)
- Nathan M Good
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, USA
| | - Matthias Fellner
- Department of Biochemistry, Michigan State University, East Lansing, Michigan, USA
- Department of Biochemistry, University of Otago, Dunedin, Otago, New Zealand
| | - Kemal Demirer
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, USA
- Okemos High School, Okemos, Michigan, USA
| | - Jian Hu
- Department of Biochemistry, Michigan State University, East Lansing, Michigan, USA
- Department of Chemistry, Michigan State University, East Lansing, Michigan, USA
| | - Robert P Hausinger
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, USA
- Department of Biochemistry, Michigan State University, East Lansing, Michigan, USA
| | - N Cecilia Martinez-Gomez
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, USA
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12
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Hu G, Li N, Zhang Y, Li H. A novel pH sensor with application to milk based on electrochemical oxidative quinone-functionalization of tryptophan residues. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.113871] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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13
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Dey S, Maity S, Pal K, Jana K, Sinha C. The oxidative dehydrogenation of a coumarinyl scaffold with copper ion and metal ion detection in human liver cancer cells (HepG2). Dalton Trans 2019; 48:17818-17830. [PMID: 31774094 DOI: 10.1039/c9dt03870a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
An unsymmetrical o-phenylenediamine derivative, L (7-hydroxy-4-methyl-8-(1-(phenyl- (pyridin-2-yl)methyl)-1H-benzo[d]imidazol-2-yl)-2H-chromen-2-one), has been synthesized from (E)-N1-(phenyl(pyridine-2-yl)methylene)benzene-1,2-diamine with 7-hydroxy-4-methyl-2-oxo-2H-chromene-8-carbaldehyde and characterized by X-ray, IR, 1H NMR and ESI-MS spectral analyses. The X-ray structure shows L as a cyclic benzimidazole derivative, but it undergoes ring-opening upon reaction with transition metal ions. L is non-emissive in 9 : 1 (v/v) EtOH/H2O (HEPES buffer, pH 7.4) but becomes highly fluorescent upon Zn2+ coordination, and the emissive Zn(ii) complex undergoes transmetallation in the presence of Cu2+ ions specifically, followed by amine to imine oxidation, i.e. an oxidative dehydrogenation (OD) reaction -(2e + 2H+) occurs. The transmetallation of Zn2+ from the complex by Cu2+ (CuCl2) separated the non-emissive X-ray diffractable crystal of [Cu(L'')Cl] (L'' = amine oxidized form of L). A square pyramidal [Cu(L'')][ClO4] complex was also isolated from the reaction of L with Cu(CH3CN)4(ClO4) in the presence of air, and in this complex the amine is also oxidized to the imine. Here, copper ions in the presence of air play an important role in the OD reaction of L as determined by EPR and cyclic voltammetry studies. The ligand, L, is used for Zn2+ ion recovery from a municipally supplied water sample. A paper strip detection kit for Zn2+ and Cu2+ is designed using L. The ligand is also used for intracellular Zn2+ detection in a human liver cancer cell line (HepG2).
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Affiliation(s)
- Sunanda Dey
- Department of Chemistry, Jadavpur University, Kolkata-700032, India.
| | - Suvendu Maity
- Department of Chemistry, Jadavpur University, Kolkata-700032, India.
| | - Kunal Pal
- Department of Life Science and Biotechnology, Jadavpur University, Kolkata-700032, India and Division of Molecular Medicine, Bose Institute, Kolkata-700056, India
| | - Kuladip Jana
- Division of Molecular Medicine, Bose Institute, Kolkata-700056, India
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Lumpe H, Daumann LJ. Studies of Redox Cofactor Pyrroloquinoline Quinone and Its Interaction with Lanthanides(III) and Calcium(II). Inorg Chem 2019; 58:8432-8441. [DOI: 10.1021/acs.inorgchem.9b00568] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Henning Lumpe
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377 Munich, Germany
| | - Lena J. Daumann
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377 Munich, Germany
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15
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Sun D, Davidson VL. Mechanisms of Catalysis and Electron Transfer by Tryptophan Tryptophylquinone Enzymes. PROGRESS IN REACTION KINETICS AND MECHANISM 2019. [DOI: 10.3184/007967402103165397] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This review covers experimental works which have been carried out on the properties of the tryptophan tryptophylquinone (TTQ) cofactor and the TTQ-containing enzyme, methylamine dehydrogenase (MADH). The kinetic mechanism of MADH catalysed reactions, factors that determine the substrate specificity of MADH and the chemical reaction mechanism of MADH are discussed in detail. Electron transfer theory and kinetic models of interprotein electron transfer are discussed. Studies of electron transfer reactions in the MADH-amicyanin-cytochrome c551i protein complex are reviewed and discussed in terms of electron transfer theory.
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Affiliation(s)
- Dapeng Sun
- Department of Biochemistry, University of Mississippi Medical Center, 2500 N. State St., Jackson, MS 39216-4505, USA
| | - Victor L. Davidson
- Department of Biochemistry, University of Mississippi Medical Center, 2500 N. State St., Jackson, MS 39216-4505, USA
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16
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Li B, Wendlandt AE, Stahl SS. Replacement of Stoichiometric DDQ with a Low Potential o-Quinone Catalyst Enabling Aerobic Dehydrogenation of Tertiary Indolines in Pharmaceutical Intermediates. Org Lett 2019; 21:1176-1181. [PMID: 30702297 DOI: 10.1021/acs.orglett.9b00111] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A transition-metal/quinone complex, [Ru(phd)3]2+ (phd = 1,10-phenanthroline-5,6-dione), is shown to be effective for aerobic dehydrogenation of 3° indolines to the corresponding indoles. The results show how low potential quinones may be tailored to provide a catalytic alternative to stoichiometric DDQ, due to their ability to mediate efficient substrate dehydrogenation while also being compatible with facile reoxidation by O2. The utility of the method is demonstrated in the synthesis of key intermediates to pharmaceutically important molecules.
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Affiliation(s)
- Bao Li
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
| | - Alison E Wendlandt
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
| | - Shannon S Stahl
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
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17
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Marino T, Prejanò M, Russo N. How Metal Coordination in the Ca-, Ce-, and Eu-Containing Methanol Dehydrogenase Enzymes Can Influence the Catalysis: A Theoretical Point of View. TRANSITION METALS IN COORDINATION ENVIRONMENTS 2019. [DOI: 10.1007/978-3-030-11714-6_16] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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18
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19
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The crystal structure of methanol dehydrogenase, a quinoprotein from the marine methylotrophic bacterium Methylophaga aminisulfidivorans MPT. J Microbiol 2018; 56:246-254. [DOI: 10.1007/s12275-018-7483-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 01/11/2018] [Accepted: 01/15/2018] [Indexed: 10/17/2022]
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20
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McSkimming A, Cheisson T, Carroll PJ, Schelter EJ. Functional Synthetic Model for the Lanthanide-Dependent Quinoid Alcohol Dehydrogenase Active Site. J Am Chem Soc 2018; 140:1223-1226. [DOI: 10.1021/jacs.7b12318] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Alex McSkimming
- P. Roy and Diana T. Vagelos
Laboratories, Department of Chemistry, University of Pennsylvania, 231 S 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Thibault Cheisson
- P. Roy and Diana T. Vagelos
Laboratories, Department of Chemistry, University of Pennsylvania, 231 S 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Patrick J. Carroll
- P. Roy and Diana T. Vagelos
Laboratories, Department of Chemistry, University of Pennsylvania, 231 S 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Eric J. Schelter
- P. Roy and Diana T. Vagelos
Laboratories, Department of Chemistry, University of Pennsylvania, 231 S 34th Street, Philadelphia, Pennsylvania 19104, United States
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21
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Houen G. Mammalian Cu-containing amine oxidases (CAOs): New methods of analysis, structural relationships, and possible functions. APMIS 2017; 107:5-46. [DOI: 10.1111/apm.1999.107.s96.5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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22
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Prejanò M, Marino T, Russo N. How Can Methanol Dehydrogenase from Methylacidiphilum fumariolicum
Work with the Alien CeIII
Ion in the Active Center? A Theoretical Study. Chemistry 2017; 23:8652-8657. [DOI: 10.1002/chem.201700381] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Indexed: 01/27/2023]
Affiliation(s)
- Mario Prejanò
- Dipartimento di Chimica e Tecnologie Chimiche; Università della Calabria; 87036 Arcavacata di Rende (CS) Italy
| | - Tiziana Marino
- Dipartimento di Chimica e Tecnologie Chimiche; Università della Calabria; 87036 Arcavacata di Rende (CS) Italy
| | - Nino Russo
- Dipartimento di Chimica e Tecnologie Chimiche; Università della Calabria; 87036 Arcavacata di Rende (CS) Italy
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23
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Saha S, Roy Choudhury C, Gómez-García CJ, Benmansour S, Garribba E, Frontera A, Rizzoli C, Mitra S. A trigonal prismatic anionic iron(iii) complex of a radical o-iminobenzosemiquinonate derivative: structural and spectral analyses. NEW J CHEM 2017. [DOI: 10.1039/c7nj01212h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The complex [FeIII(L2−˙)2]−is a rare example of a trigonal prismatic Fe(iii) complex with twoS= 1/2 radical isoquinone ligands showing strong antiferromagnetic coupling.
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Affiliation(s)
- Sandeepta Saha
- Department of Chemistry
- Jadavpur University
- Kolkata-700032
- India
| | | | - Carlos J. Gómez-García
- Instituto de Ciencia Molecular (ICMol)
- Dpto. Química Inorgánica
- Universidad de Valencia
- 46980 Paterna
- Spain
| | - Samia Benmansour
- Instituto de Ciencia Molecular (ICMol)
- Dpto. Química Inorgánica
- Universidad de Valencia
- 46980 Paterna
- Spain
| | - Eugenio Garribba
- Department of Chemistry and Pharmacy
- University of Sassari
- I-07100 Sassari
- Italy
| | - Antonio Frontera
- Departament de Química
- Universitat de les Illes Balears
- Baleares
- Spain
| | | | - Samiran Mitra
- Department of Chemistry
- Jadavpur University
- Kolkata-700032
- India
- Department of Chemistry
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24
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Pyrroloquinoline Quinone Ethanol Dehydrogenase in Methylobacterium extorquens AM1 Extends Lanthanide-Dependent Metabolism to Multicarbon Substrates. J Bacteriol 2016; 198:3109-3118. [PMID: 27573017 DOI: 10.1128/jb.00478-16] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 08/24/2016] [Indexed: 01/24/2023] Open
Abstract
Lanthanides are utilized by microbial methanol dehydrogenases, and it has been proposed that lanthanides may be important for other type I alcohol dehydrogenases. A triple mutant strain (mxaF xoxF1 xoxF2; named MDH-3), deficient in the three known methanol dehydrogenases of the model methylotroph Methylobacterium extorquens AM1, is able to grow poorly with methanol if exogenous lanthanides are added to the growth medium. When the gene encoding a putative quinoprotein ethanol dehydrogenase, exaF, was mutated in the MDH-3 background, the quadruple mutant strain could no longer grow on methanol in minimal medium with added lanthanum (La3+). ExaF was purified from cells grown with both calcium (Ca2+) and La3+ and with Ca2+ only, and the protein species were studied biochemically. Purified ExaF is a 126-kDa homodimer that preferentially binds La3+ over Ca2+ in the active site. UV-visible spectroscopy indicates the presence of pyrroloquinoline quinone (PQQ) as a cofactor. ExaF purified from the Ca2+-plus-La3+ condition readily oxidizes ethanol and has secondary activities with formaldehyde, acetaldehyde, and methanol, whereas ExaF purified from the Ca2+-only condition has minimal activity with ethanol as the substrate and activity with methanol is not detectable. The exaF mutant is not affected for growth with ethanol; however, kinetic and in vivo data show that ExaF contributes to ethanol metabolism when La3+ is present, expanding the role of lanthanides to multicarbon metabolism. IMPORTANCE ExaF is the most efficient PQQ-dependent ethanol dehydrogenase reported to date and, to our knowledge, the first non-XoxF-type alcohol oxidation system reported to use lanthanides as a cofactor, expanding the importance of lanthanides in biochemistry and bacterial metabolism beyond methanol dehydrogenases to multicarbon metabolism. These results support an earlier proposal that an aspartate residue near the catalytic aspartate residue may be an indicator of rare-earth element utilization by type I alcohol dehydrogenases.
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25
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Wendlandt AE, Stahl SS. Quinone-Catalyzed Selective Oxidation of Organic Molecules. Angew Chem Int Ed Engl 2015; 54:14638-58. [PMID: 26530485 PMCID: PMC4859943 DOI: 10.1002/anie.201505017] [Citation(s) in RCA: 241] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Indexed: 01/12/2023]
Abstract
Quinones are common stoichiometric reagents in organic chemistry. Para-quinones with high reduction potentials, such as DDQ and chloranil, are widely used and typically promote hydride abstraction. In recent years, many catalytic applications of these methods have been achieved by using transition metals, electrochemistry, or O2 to regenerate the oxidized quinone in situ. Complementary studies have led to the development of a different class of quinones that resemble the ortho-quinone cofactors in copper amine oxidases and mediate the efficient and selective aerobic and/or electrochemical dehydrogenation of amines. The latter reactions typically proceed by electrophilic transamination and/or addition-elimination reaction mechanisms, rather than hydride abstraction pathways. The collective observations show that the quinone structure has a significant influence on the reaction mechanism and has important implications for the development of new quinone reagents and quinone-catalyzed transformations.
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Affiliation(s)
- Alison E Wendlandt
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706 (USA)
| | - Shannon S Stahl
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706 (USA).
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26
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Wendlandt AE, Stahl SS. Chinon‐katalysierte, selektive Oxidation organischer Moleküle. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505017] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Alison E. Wendlandt
- Department of Chemistry, University of Wisconsin‐Madison, 1101 University Avenue, Madison, Wisconsin 53706 (USA)
| | - Shannon S. Stahl
- Department of Chemistry, University of Wisconsin‐Madison, 1101 University Avenue, Madison, Wisconsin 53706 (USA)
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27
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Rozeboom HJ, Yu S, Mikkelsen R, Nikolaev I, Mulder HJ, Dijkstra BW. Crystal structure of quinone-dependent alcohol dehydrogenase from P
seudogluconobacter saccharoketogenes
. A versatile dehydrogenase oxidizing alcohols and carbohydrates. Protein Sci 2015; 24:2044-54. [DOI: 10.1002/pro.2818] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 09/30/2015] [Accepted: 10/01/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Henriëtte J. Rozeboom
- Laboratory of Biophysical Chemistry; Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen; Groningen The Netherlands
| | - Shukun Yu
- DuPont Industrial Biosciences; Brabrand, Aarhus Denmark
| | | | - Igor Nikolaev
- DuPont Industrial Biosciences; Leiden The Netherlands
| | | | - Bauke W. Dijkstra
- Laboratory of Biophysical Chemistry; Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen; Groningen The Netherlands
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28
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Uchida W, Wakabayashi M, Ikemoto K, Nakano M, Ohtani H, Nakamura S. Mechanism of glycine oxidation catalyzed by pyrroloquinoline quinone in aqueous solution. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2014.12.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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29
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Mitome H, Ishizuka T, Shiota Y, Yoshizawa K, Kojima T. Controlling the redox properties of a pyrroloquinolinequinone (PQQ) derivative in a ruthenium(ii) coordination sphere. Dalton Trans 2015; 44:3151-8. [DOI: 10.1039/c4dt03358b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Difference in the coordination modes of pyrroloquinolinequinone (PQQ), a redox-active heteroaromatic cofactor, in ruthenium(ii) complexes, drastically affects the stability of the metal coordination and the reversibility of the reduction process of the PQQ ligand. Additional metal-ion binding to the PQQ ligand largely raises its 1e−-reduction potential.
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Affiliation(s)
- Hiroumi Mitome
- Department of Chemistry
- University of Tsukuba
- Tsukuba
- Japan
| | | | - Yoshihito Shiota
- Institute for Materials Chemistry and Engineering and International Research Centre for Molecular System
- Kyushu University
- Nishi-Ku
- Japan
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering and International Research Centre for Molecular System
- Kyushu University
- Nishi-Ku
- Japan
- Elements Strategy Initiative for Catalysts & Batteries
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30
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Saha P, Saha Roy A, Weyhermüller T, Ghosh P. Metal ion promoted tautomerization and C-N bond cleavage: conversion of catechol to a p-benzoquinone derivative. Chem Commun (Camb) 2014; 50:13073-6. [PMID: 25225674 DOI: 10.1039/c4cc05286b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal ion promoted tautomerization of p-iminoquinone to o-diiminoquinone and a C-N bond cleavage of 2,5-bis(p-tolylamino)-4-p-tolyliminobenzoquinone leading to the conversion of catechol to a p-benzoquinone derivative are reported.
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Affiliation(s)
- Pinaki Saha
- Department of Chemistry, R. K. Mission Residential College, Narendrapur, Kolkata-103, India.
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31
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Mandal A, Agarwala H, Ray R, Plebst S, Mobin SM, Priego JL, Jiménez-Aparicio R, Kaim W, Lahiri GK. Sensitivity of the valence structure in diruthenium complexes as a function of terminal and bridging ligands. Inorg Chem 2014; 53:6082-93. [PMID: 24896222 DOI: 10.1021/ic500452h] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The compounds [(acac)2Ru(III)(μ-H2L(2-))Ru(III)(acac)2] (rac, 1, and meso, 1') and [(bpy)2Ru(II)(μ-H2L(•-))Ru(II)(bpy)2](ClO4)3 (meso, [2](ClO4)3) have been structurally, magnetically, spectroelectrochemically, and computationally characterized (acac(-) = acetylacetonate, bpy = 2,2'-bipyridine, and H4L = 1,4-diamino-9,10-anthraquinone). The N,O;N',O'-coordinated μ-H2L(n-) forms two β-ketiminato-type chelate rings, and 1 or 1' are connected via NH···O hydrogen bridges in the crystals. 1 exhibits a complex magnetic behavior, while [2](ClO4)3 is a radical species with mixed ligand/metal-based spin. The combination of redox noninnocent bridge (H2L(0) → → → →H2L(4-)) and {(acac)2Ru(II)} → →{(acac)2Ru(IV)} or {(bpy)2Ru(II)} → {(bpy)2Ru(III)} in 1/1' or 2 generates alternatives regarding the oxidation state formulations for the accessible redox states (1(n) and 2(n)), which have been assessed by UV-vis-NIR, EPR, and DFT/TD-DFT calculations. The experimental and theoretical studies suggest variable mixing of the frontier orbitals of the metals and the bridge, leading to the following most appropriate oxidation state combinations: [(acac)2Ru(III)(μ-H2L(•-))Ru(III)(acac)2](+) (1(+)) → [(acac)2Ru(III)(μ-H2L(2-))Ru(III)(acac)2] (1) → [(acac)2Ru(III)(μ-H2L(•3-))Ru(III)(acac)2](-)/[(acac)2Ru(III)(μ-H2L(2-))Ru(II)(acac)2](-) (1(-)) → [(acac)2Ru(III)(μ-H2L(4-))Ru(III)(acac)2](2-)/[(acac)2Ru(II)(μ-H2L(2-))Ru(II)(acac)2](2-) (1(2-)) and [(bpy)2Ru(III)(μ-H2L(•-))Ru(II)(bpy)2](4+) (2(4+)) → [(bpy)2Ru(II)(μ-H2L(•-))Ru(II)(bpy)2](3+)/[(bpy)2Ru(II)(μ-H2L(2-))Ru(III)(bpy)2](3+) (2(3+)) → [(bpy)2Ru(II)(μ-H2L(2-))Ru(II)(bpy)2](2+) (2(2+)). The favoring of Ru(III) by σ-donating acac(-) and of Ru(II) by the π-accepting bpy coligands shifts the conceivable valence alternatives accordingly. Similarly, the introduction of the NH donor function in H2L(n) as compared to O causes a cathodic shift of redox potentials with corresponding consequences for the valence structure.
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Affiliation(s)
- Abhishek Mandal
- Department of Chemistry, Indian Institute of Technology Bombay , Powai, Mumbai 400076, India
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32
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Keltjens JT, Pol A, Reimann J, Op den Camp HJM. PQQ-dependent methanol dehydrogenases: rare-earth elements make a difference. Appl Microbiol Biotechnol 2014; 98:6163-83. [PMID: 24816778 DOI: 10.1007/s00253-014-5766-8] [Citation(s) in RCA: 245] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 04/07/2014] [Accepted: 04/08/2014] [Indexed: 01/06/2023]
Abstract
Methanol dehydrogenase (MDH) catalyzes the first step in methanol use by methylotrophic bacteria and the second step in methane conversion by methanotrophs. Gram-negative bacteria possess an MDH with pyrroloquinoline quinone (PQQ) as its catalytic center. This MDH belongs to the broad class of eight-bladed β propeller quinoproteins, which comprise a range of other alcohol and aldehyde dehydrogenases. A well-investigated MDH is the heterotetrameric MxaFI-MDH, which is composed of two large catalytic subunits (MxaF) and two small subunits (MxaI). MxaFI-MDHs bind calcium as a cofactor that assists PQQ in catalysis. Genomic analyses indicated the existence of another MDH distantly related to the MxaFI-MDHs. Recently, several of these so-called XoxF-MDHs have been isolated. XoxF-MDHs described thus far are homodimeric proteins lacking the small subunit and possess a rare-earth element (REE) instead of calcium. The presence of such REE may confer XoxF-MDHs a superior catalytic efficiency. Moreover, XoxF-MDHs are able to oxidize methanol to formate, rather than to formaldehyde as MxaFI-MDHs do. While structures of MxaFI- and XoxF-MDH are conserved, also regarding the binding of PQQ, the accommodation of a REE requires the presence of a specific aspartate residue near the catalytic site. XoxF-MDHs containing such REE-binding motif are abundantly present in genomes of methylotrophic and methanotrophic microorganisms and also in organisms that hitherto are not known for such lifestyle. Moreover, sequence analyses suggest that XoxF-MDHs represent only a small part of putative REE-containing quinoproteins, together covering an unexploited potential of metabolic functions.
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Affiliation(s)
- Jan T Keltjens
- Department of Microbiology, Institute of Wetland and Water Research, Radboud University Nijmegen, Heyendaalseweg 135, 6525AJ, Nijmegen, The Netherlands
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33
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Ravikiran B, Mahalakshmi R. Unusual post-translational protein modifications: the benefits of sophistication. RSC Adv 2014. [DOI: 10.1039/c4ra04694c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This review summarizes the “seemingly bizarre”, yet naturally occurring, covalent non-disulphide cross-links in enzymatic and scaffolding proteins and their functions.
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Affiliation(s)
- Boddepalli Ravikiran
- Molecular Biophysics Laboratory
- Department of Biological Sciences
- Indian Institute of Science Education and Research
- Bhopal, India
| | - Radhakrishnan Mahalakshmi
- Molecular Biophysics Laboratory
- Department of Biological Sciences
- Indian Institute of Science Education and Research
- Bhopal, India
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34
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Chaudhuri S, Bera S, Biswas MK, Roy AS, Weyhermüller T, Ghosh P. Oxidovanadium(iv), oxidomolybdenum(vi) and cobalt(iii) complexes of o-phenylenediamine derivatives: oxidative dehydrogenation and photoluminescence. Inorg Chem Front 2014. [DOI: 10.1039/c3qi00103b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oxidovanadium(iv), cis-dioxidomolybdenum(vi) amide complexes and cobalt(iii) imine complex of an o-phenylenediamine derivatives are reported.
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Affiliation(s)
| | - Sachinath Bera
- Department of Chemistry
- R. K. Mission Residential College
- Kolkata-700103, India
| | - Manas Kumar Biswas
- Department of Chemistry
- R. K. Mission Residential College
- Kolkata-700103, India
| | - Amit Saha Roy
- Department of Chemistry
- R. K. Mission Residential College
- Kolkata-700103, India
| | - Thomas Weyhermüller
- Max-Planck Institute for Chemical Energy Conversion
- Mülheim an der Ruhr, Germany
| | - Prasanta Ghosh
- Department of Chemistry
- R. K. Mission Residential College
- Kolkata-700103, India
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35
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The two-step electrochemical oxidation of alcohols using a novel recombinant PQQ alcohol dehydrogenase as a catalyst for a bioanode. Bioelectrochemistry 2013; 94:75-8. [DOI: 10.1016/j.bioelechem.2013.08.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Revised: 08/05/2013] [Accepted: 08/11/2013] [Indexed: 11/23/2022]
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36
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Mamlouk D, Gullo M. Acetic Acid bacteria: physiology and carbon sources oxidation. Indian J Microbiol 2013; 53:377-84. [PMID: 24426139 PMCID: PMC3779290 DOI: 10.1007/s12088-013-0414-z] [Citation(s) in RCA: 140] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Accepted: 04/24/2013] [Indexed: 11/28/2022] Open
Abstract
Acetic acid bacteria (AAB) are obligately aerobic bacteria within the family Acetobacteraceae, widespread in sugary, acidic and alcoholic niches. They are known for their ability to partially oxidise a variety of carbohydrates and to release the corresponding metabolites (aldehydes, ketones and organic acids) into the media. Since a long time they are used to perform specific oxidation reactions through processes called "oxidative fermentations", especially in vinegar production. In the last decades physiology of AAB have been widely studied because of their role in food production, where they act as beneficial or spoiling organisms, and in biotechnological industry, where their oxidation machinery is exploited to produce a number of compounds such as l-ascorbic acid, dihydroxyacetone, gluconic acid and cellulose. The present review aims to provide an overview of AAB physiology focusing carbon sources oxidation and main products of their metabolism.
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Affiliation(s)
- Dhouha Mamlouk
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Amendola, 2, 42122 Reggio Emilia, Italy
| | - Maria Gullo
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Amendola, 2, 42122 Reggio Emilia, Italy
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37
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Pol A, Barends TRM, Dietl A, Khadem AF, Eygensteyn J, Jetten MSM, Op den Camp HJM. Rare earth metals are essential for methanotrophic life in volcanic mudpots. Environ Microbiol 2013; 16:255-64. [PMID: 24034209 DOI: 10.1111/1462-2920.12249] [Citation(s) in RCA: 296] [Impact Index Per Article: 26.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 08/06/2013] [Accepted: 08/09/2013] [Indexed: 11/28/2022]
Abstract
Growth of Methylacidiphilum fumariolicum SolV, an extremely acidophilic methanotrophic microbe isolated from an Italian volcanic mudpot, is shown to be strictly dependent on the presence of lanthanides, a group of rare earth elements (REEs) such as lanthanum (Ln), cerium (Ce), praseodymium (Pr) and neodymium (Nd). After fractionation of the bacterial cells and crystallization of the methanol dehydrogenase (MDH), it was shown that lanthanides were essential as cofactor in a homodimeric MDH comparable with one of the MDHs of Methylobacterium extorquens AM1. We hypothesize that the lanthanides provide superior catalytic properties to pyrroloquinoline quinone (PQQ)-dependent MDH, which is a key enzyme for both methanotrophs and methylotrophs. Thus far, all isolated MxaF-type MDHs contain calcium as a catalytic cofactor. The gene encoding the MDH of strain SolV was identified to be a xoxF-ortholog, phylogenetically closely related to mxaF. Analysis of the protein structure and alignment of amino acids showed potential REE-binding motifs in XoxF enzymes of many methylotrophs, suggesting that these may also be lanthanide-dependent MDHs. Our findings will have major environmental implications as metagenome studies showed (lanthanide-containing) XoxF-type MDH is much more prominent in nature than MxaF-type enzymes.
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Affiliation(s)
- Arjan Pol
- Department of Microbiology, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
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Das D, Agarwala H, Chowdhury AD, Patra T, Mobin SM, Sarkar B, Kaim W, Lahiri GK. Four-Center Oxidation State Combinations and Near-Infrared Absorption in [Ru(pap)(Q)2]n(Q=3,5-Di-tert-butyl-N-aryl-1,2-benzoquinonemonoimine, pap=2-Phenylazopyridine). Chemistry 2013; 19:7384-94. [DOI: 10.1002/chem.201204620] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Indexed: 12/26/2022]
Affiliation(s)
- Dipanwita Das
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
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Mitome H, Ishizuka T, Shiota Y, Yoshizawa K, Kojima T. Heteronuclear RuIIAgI Complexes Having a Pyrroloquinolinequinone Derivative as a Bridging Ligand. Inorg Chem 2013; 52:2274-6. [DOI: 10.1021/ic302617b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hiroumi Mitome
- Department of Chemistry, University of Tsukuba, 1-1-1 Tennoudai,
Tsukuba, Ibaraki 305-8571, Japan
| | - Tomoya Ishizuka
- Department of Chemistry, University of Tsukuba, 1-1-1 Tennoudai,
Tsukuba, Ibaraki 305-8571, Japan
| | - Yoshihiko Shiota
- Institute for Materials Chemistry and Engineering, Kyushu University, Motooka, Nishi-Ku,
Fukuoka 819-0395, Japan
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering, Kyushu University, Motooka, Nishi-Ku,
Fukuoka 819-0395, Japan
| | - Takahiko Kojima
- Department of Chemistry, University of Tsukuba, 1-1-1 Tennoudai,
Tsukuba, Ibaraki 305-8571, Japan
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Sedó J, Saiz-Poseu J, Busqué F, Ruiz-Molina D. Catechol-based biomimetic functional materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013. [PMID: 23180685 DOI: 10.1002/adma.201202343] [Citation(s) in RCA: 477] [Impact Index Per Article: 43.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Catechols are found in nature taking part in a remarkably broad scope of biochemical processes and functions. Though not exclusively, such versatility may be traced back to several properties uniquely found together in the o-dihydroxyaryl chemical function; namely, its ability to establish reversible equilibria at moderate redox potentials and pHs and to irreversibly cross-link through complex oxidation mechanisms; its excellent chelating properties, greatly exemplified by, but by no means exclusive, to the binding of Fe(3+); and the diverse modes of interaction of the vicinal hydroxyl groups with all kinds of surfaces of remarkably different chemical and physical nature. Thanks to this diversity, catechols can be found either as simple molecular systems, forming part of supramolacular structures, coordinated to different metal ions or as macromolecules mostly arising from polymerization mechanisms through covalent bonds. Such versatility has allowed catechols to participate in several natural processes and functions that range from the adhesive properties of marine organisms to the storage of some transition metal ions. As a result of such an astonishing range of functionalities, catechol-based systems have in recent years been subject to intense research, aimed at mimicking these natural systems in order to develop new functional materials and coatings. A comprehensive review of these studies is discussed in this paper.
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Affiliation(s)
- Josep Sedó
- Centro de Investigación en Nanociencia y Nanotecnología, Campus UAB, Cerdanyola del Vallès, Barcelona, Spain
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41
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Stampolidis P, Kaderbhai NN, Kaderbhai MA. Presence and role of a second disulphide bond in recombinant lupanine hydroxylase using site-directed mutagenesis with 143Cys→Ser and 124,143Cys→Ser mutations in Escherichia coli. FEMS Microbiol Lett 2012; 334:35-43. [DOI: 10.1111/j.1574-6968.2012.02616.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Revised: 05/30/2012] [Accepted: 06/02/2012] [Indexed: 11/30/2022] Open
Affiliation(s)
- Pavlos Stampolidis
- Department of Molecular Biology; Max Planck Institute of Biochemistry; Martinsried; Germany
| | - Naheed N. Kaderbhai
- Institute of Biological, Environmental and Rural Sciences; Aberystwyth University; Aberystwyth; UK
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Pyrroloquinoline quinone modulates the kinetic parameters of the mammalian selenoprotein thioredoxin reductase 1 and is an inhibitor of glutathione reductase. Biochem Pharmacol 2012; 83:815-20. [DOI: 10.1016/j.bcp.2011.12.028] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Revised: 12/20/2011] [Accepted: 12/20/2011] [Indexed: 11/19/2022]
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43
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Agarwala H, Das D, Mobin SM, Mondal TK, Lahiri GK. Probing valence and spin situations in selective ruthenium–iminoquinonoid frameworks. An experimental and DFT analysis. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.02.079] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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44
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McDonald NA, Subramani C, Caldwell ST, Zainalabdeen NY, Cooke G, Rotello VM. Simultaneous hydrogen bonding and π-stacking interactions between flavin/porphyrin host–guest systems. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2010.11.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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45
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Das D, Mondal TK, Chowdhury AD, Weisser F, Schweinfurth D, Sarkar B, Mobin SM, Urbanos FA, Jiménez-Aparicio R, Lahiri GK. Valence and spin situations in isomeric [(bpy)Ru(Q′)2]n (Q′ = 3,5-di-tert-butyl-N-aryl-1,2-benzoquinonemonoimine). An experimental and DFT analysis. Dalton Trans 2011; 40:8377-90. [DOI: 10.1039/c1dt10609k] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kanninen P, Ruiz V, Kallio T, Anoshkin I, Kauppinen EI, Kontturi K. Simple immobilization of pyrroloquinoline quinone on few-walled carbon nanotubes. Electrochem commun 2010. [DOI: 10.1016/j.elecom.2010.06.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Kulys J, Tetianec L, Bratkovskaja I. Pyrroloquinoline quinone-dependent carbohydrate dehydrogenase: Activity enhancement and the role of artificial electron acceptors. Biotechnol J 2010; 5:822-8. [DOI: 10.1002/biot.201000119] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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48
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Abstract
Whole-cell biocatalysis utilizes native or recombinant enzymes produced by cellular metabolism to perform synthetically interesting reactions. Besides hydrolases, oxidoreductases represent the most applied enzyme class in industry. Oxidoreductases are attributed a high future potential, especially for applications in the chemical and pharmaceutical industries, as they enable highly interesting chemistry (e.g., the selective oxyfunctionalization of unactivated C-H bonds). Redox reactions are characterized by electron transfer steps that often depend on redox cofactors as additional substrates. Their regeneration typically is accomplished via the metabolism of whole-cell catalysts. Traditionally, studies towards productive redox biocatalysis focused on the biocatalytic enzyme, its activity, selectivity, and specificity, and several successful examples of such processes are running commercially. However, redox cofactor regeneration by host metabolism was hardly considered for the optimization of biocatalytic rate, yield, and/or titer. This article reviews molecular mechanisms of oxidoreductases with synthetic potential and the host redox metabolism that fuels biocatalytic reactions with redox equivalents. The tools discussed in this review for investigating redox metabolism provide the basis for studies aiming at a deeper understanding of the interplay between synthetically active enzymes and metabolic networks. The ultimate goal of rational whole-cell biocatalyst engineering and use for fine chemical production is discussed.
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Lahiri GK, Kaim W. Electronic structure alternatives in nitrosylruthenium complexes. Dalton Trans 2010; 39:4471-8. [DOI: 10.1039/c002173c] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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50
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Machado SS, Jongejan A, Geerlof A, Jongejan JA, Duine JA. Entropic And Enthalpic Contributions To The Enantioselectivity Of Quinohaemoprotein Alcohol Dehydrogenases FromAcetobacter PasteurianusAndComamonas TestosteroniIn The Oxidation Of Primary And Secondary Alcohols. BIOCATAL BIOTRANSFOR 2009. [DOI: 10.3109/10242429909040114] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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