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Brissos V, Borges PT, Sancho F, Lucas MF, Frazão C, Conzuelo F, Martins LO. Flexible active-site loops fine-tune substrate specificity of hyperthermophilic metallo-oxidases. J Biol Inorg Chem 2024; 29:339-351. [PMID: 38227199 PMCID: PMC11111587 DOI: 10.1007/s00775-023-02040-y] [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: 06/12/2023] [Accepted: 11/21/2023] [Indexed: 01/17/2024]
Abstract
Hyperthermophilic ('superheat-loving') archaea found in high-temperature environments such as Pyrobaculum aerophilum contain multicopper oxidases (MCOs) with remarkable efficiency for oxidizing cuprous and ferrous ions. In this work, directed evolution was used to expand the substrate specificity of P. aerophilum McoP for organic substrates. Six rounds of error-prone PCR and DNA shuffling followed by high-throughput screening lead to the identification of a hit variant with a 220-fold increased efficiency (kcat/Km) than the wild-type for 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) without compromising its intrinsic activity for metal ions. The analysis of the X-ray crystal structure reveals four proximal mutations close to the T1Cu active site. One of these mutations is within the 23-residues loop that occludes this site, a distinctive feature of prokaryotic MCOs. The increased flexibility of this loop results in an enlarged tunnel and one additional pocket that facilitates bulky substrate-enzyme interactions. These findings underscore the synergy between mutations that modulate the dynamics of the active-site loop enabling enhanced catalytic function. This study highlights the potential of targeting loops close to the T1Cu for engineering improvements suitable for biotechnological applications.
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Affiliation(s)
- Vânia Brissos
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av da República, 2780-157, Oeiras, Portugal
| | - Patrícia T Borges
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av da República, 2780-157, Oeiras, Portugal
| | - Ferran Sancho
- Zymvol Biomodeling, C/ Pau Claris, 94, 3B, 08010, Barcelona, Spain
| | | | - Carlos Frazão
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av da República, 2780-157, Oeiras, Portugal
| | - Felipe Conzuelo
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av da República, 2780-157, Oeiras, Portugal
| | - Lígia O Martins
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av da República, 2780-157, Oeiras, Portugal.
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2
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Rahman MU, Ullah MW, Shah JA, Sethupathy S, Bilal H, Abdikakharovich SA, Khan AU, Khan KA, Elboughdiri N, Zhu D. Harnessing the power of bacterial laccases for xenobiotic degradation in water: A 10-year overview. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 918:170498. [PMID: 38307266 DOI: 10.1016/j.scitotenv.2024.170498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 11/10/2023] [Accepted: 01/25/2024] [Indexed: 02/04/2024]
Abstract
Industrialization and population growth are leading to the production of significant amounts of sewage containing hazardous xenobiotic compounds. These compounds pose a threat to human and animal health, as well as the overall ecosystem. To combat this issue, chemical, physical, and biological techniques have been used to remove these contaminants from water bodies affected by human activity. Biotechnological methods have proven effective in utilizing microorganisms and enzymes, particularly laccases, to address this problem. Laccases possess versatile enzymatic characteristics and have shown promise in degrading different xenobiotic compounds found in municipal, industrial, and medical wastewater. Both free enzymes and crude enzyme extracts have demonstrated success in the biotransformation of these compounds. Despite these advancements, the widespread use of laccases for bioremediation and wastewater treatment faces challenges due to the complex composition, high salt concentration, and extreme pH often present in contaminated media. These factors negatively impact protein stability, recovery, and recycling processes, hindering their large-scale application. These issues can be addressed by focusing on large-scale production, resolving operation problems, and utilizing cutting-edge genetic and protein engineering techniques. Additionally, finding novel sources of laccases, understanding their biochemical properties, enhancing their catalytic activity and thermostability, and improving their production processes are crucial steps towards overcoming these limitations. By doing so, enzyme-based biological degradation processes can be improved, resulting in more efficient removal of xenobiotics from water systems. This review summarizes the latest research on bacterial laccases over the past decade. It covers the advancements in identifying their structures, characterizing their biochemical properties, exploring their modes of action, and discovering their potential applications in the biotransformation and bioremediation of xenobiotic pollutants commonly present in water sources.
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Affiliation(s)
- Mujeeb Ur Rahman
- Biofuels Institute, School of Emergency Management, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, PR China
| | - Muhammad Wajid Ullah
- Biofuels Institute, School of Emergency Management, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Junaid Ali Shah
- College of Life Sciences, Jilin University, Changchun 130012, PR China; Fergana Medical Institute of Public Health Uzbekistan, Fergana 150110, Uzbekistan
| | - Sivasamy Sethupathy
- Biofuels Institute, School of Emergency Management, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, PR China
| | - Hazart Bilal
- Department of Dermatology, The Second Affiliated Hospital of Shantou University Medical College, Shantou, PR China
| | | | - Afaq Ullah Khan
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Khalid Ali Khan
- Applied College, Mahala Campus and the Unit of Bee Research and Honey Production/Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha 61413, Saudi Arabia
| | - Noureddine Elboughdiri
- Chemical Engineering Department, College of Engineering, University of Ha'il, Ha'il 81441, Saudi Arabia; Chemical Engineering Process Department, National School of Engineers Gabes, University of Gabes, Gabes 6029, Tunisia
| | - Daochen Zhu
- Biofuels Institute, School of Emergency Management, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, PR China.
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Salam LB, Obayori OS, Ilori MO, Amund OO. Chromium contamination accentuates changes in the microbiome and heavy metal resistome of a tropical agricultural soil. World J Microbiol Biotechnol 2023; 39:228. [PMID: 37338635 DOI: 10.1007/s11274-023-03681-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 06/15/2023] [Indexed: 06/21/2023]
Abstract
The impacts of hexavalent chromium (Cr) contamination on the microbiome, soil physicochemistry, and heavy metal resistome of a tropical agricultural soil were evaluated for 6 weeks in field-moist microcosms consisting of a Cr-inundated agricultural soil (SL9) and an untreated control (SL7). The physicochemistry of the two microcosms revealed a diminution in the total organic matter content and a significant dip in macronutrients phosphorus, potassium, and nitrogen concentration in the SL9 microcosm. Heavy metals analysis revealed the detection of seven heavy metals (Zn, Cu, Fe, Cd, Se, Pb, Cr) in the agricultural soil (SL7), whose concentrations drastically reduced in the SL9 microcosm. Illumina shotgun sequencing of the DNA extracted from the two microcosms showed the preponderance of the phyla, classes, genera, and species of Actinobacteria (33.11%), Actinobacteria_class (38.20%), Candidatus Saccharimonas (11.67%), and Candidatus Saccharimonas aalborgensis (19.70%) in SL7, and Proteobacteria (47.52%), Betaproteobacteria (22.88%), Staphylococcus (16.18%), Staphylococcus aureus (9.76%) in SL9, respectively. Functional annotation of the two metagenomes for heavy metal resistance genes revealed diverse heavy metal resistomes involved in the uptake, transport, efflux, and detoxification of various heavy metals. It also revealed the exclusive detection in SL9 metagenome of resistance genes for chromium (chrB, chrF, chrR, nfsA, yieF), cadmium (czcB/czrB, czcD), and iron (fbpB, yqjH, rcnA, fetB, bfrA, fecE) not annotated in SL7 metagenome. The findings from this study revealed that Cr contamination induces significant shifts in the soil microbiome and heavy metal resistome, alters the soil physicochemistry, and facilitates the loss of prominent members of the microbiome not adapted to Cr stress.
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Affiliation(s)
- Lateef Babatunde Salam
- Department of Biological Sciences, Microbiology unit, Elizade University, Ilara-Mokin, Ondo State, Nigeria.
| | | | - Matthew O Ilori
- Department of Microbiology, University of Lagos, Akoka, Lagos, Nigeria
| | - Olukayode O Amund
- Department of Microbiology, University of Lagos, Akoka, Lagos, Nigeria
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Sharma KK, Singh D, Mohite SV, Williamson PR, Kennedy JF. Metal manipulators and regulators in human pathogens: A comprehensive review on microbial redox copper metalloenzymes "multicopper oxidases and superoxide dismutases". Int J Biol Macromol 2023; 233:123534. [PMID: 36740121 DOI: 10.1016/j.ijbiomac.2023.123534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/17/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023]
Abstract
The chemistry of metal ions with human pathogens is essential for their survival, energy generation, redox signaling, and niche dominance. To regulate and manipulate the metal ions, various enzymes and metal chelators are present in pathogenic bacteria. Metalloenzymes incorporate transition metal such as iron, zinc, cobalt, and copper in their reaction centers to perform essential metabolic functions; however, iron and copper have gained more importance. Multicopper oxidases have the ability to perform redox reaction on phenolic substrates with the help of copper ions. They have been reported from Enterobacteriaceae, namely Salmonella enterica, Escherichia coli, and Yersinia enterocolitica, but their role in virulence is still poorly understood. Similarly, superoxide dismutases participate in reducing oxidative stress and allow the survival of pathogens. Their role in virulence and survival is well established in Salmonella typhimurium and Mycobacterium tuberculosis. Further, to ensure survival against stress, like metal starvation or metal toxicity, redox metalloenzymes and metal transportation systems of pathogens actively participate in metal homeostasis. Recently, the omics and protein structure biology studies have helped to predict new targets for regulation the colonization potential of the pathogenic strains. The current review is focused on the major roles of redox metalloenzymes, especially MCOs and SODs of human pathogenic bacteria.
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Affiliation(s)
- Krishna Kant Sharma
- Laboratory of Enzymology and Gut Microbiology, Department of Microbiology, Maharshi Dayanand University, Rohtak 124001, Haryana, India.
| | - Deepti Singh
- Laboratory of Enzymology and Gut Microbiology, Department of Microbiology, Maharshi Dayanand University, Rohtak 124001, Haryana, India
| | - Shreya Vishwas Mohite
- Laboratory of Enzymology and Gut Microbiology, Department of Microbiology, Maharshi Dayanand University, Rohtak 124001, Haryana, India
| | - Peter R Williamson
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - John F Kennedy
- Chembiotech Laboratories, Advanced Science and Technology Institute, 5 the Croft, Buntsford Drive, Stoke Heath, Bromsgrove, Worcs B60 4JE, UK
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5
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Qin Y, Ke W, Faheem A, Ye Y, Hu Y. A rapid and naked-eye on-site monitoring of biogenic amines in foods spoilage. Food Chem 2023; 404:134581. [DOI: 10.1016/j.foodchem.2022.134581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 09/17/2022] [Accepted: 10/08/2022] [Indexed: 11/22/2022]
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Di Rocco G, Battistuzzi G, Ranieri A, Bortolotti CA, Borsari M, Sola M. Thermodynamics and Kinetics of Electron Transfer of Electrode-Immobilized Small Laccase from Streptomyces coelicolor. Molecules 2022; 27:molecules27228079. [PMID: 36432180 PMCID: PMC9692349 DOI: 10.3390/molecules27228079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 11/14/2022] [Accepted: 11/18/2022] [Indexed: 11/22/2022] Open
Abstract
The thermodynamic and kinetic properties for heterogeneous electron transfer (ET) were measured for the electrode-immobilized small laccase (SLAC) from Streptomyces coelicolor subjected to different electrostatic and covalent protein-electrode linkages, using cyclic voltammetry. Once immobilized electrostatically onto a gold electrode using mixed carboxyl- and hydroxy-terminated alkane-thiolate SAMs or covalently exploiting the same SAM subjected to N-hydroxysuccinimide+1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide (NHS-EDC) chemistry, the SLAC-electrode electron flow occurs through the T1 center. The E°' values (from +0.2 to +0.1 V vs. SHE at pH 7.0) are lower by more than 0.2 V compared to the protein either in solution or immobilized with different anchoring strategies using uncharged SAMs. For the present electrostatic and covalent binding, this effect can, respectively, be ascribed to the negative charge of the SAM surfaces and to deletion of the positive charge of Lys/Arg residues due to amide bond formation which both selectively stabilize the more positively charged oxidized SLAC. Observation of enthalpy/entropy compensation within the series indicates that the immobilized proteins experience different reduction-induced solvent reorganization effects. The E°' values for the covalently attached SLAC are sensitive to three acid base equilibria, with apparent pKa values of pKa1ox = 5.1, pKa1red = 7.5, pKa2ox = 8.4, pKa2red = 10.9, pKa2ox = 8.9, pKa2red = 11.3 possibly involving one residue close to the T1 center and two residues (Lys and/or Arg) along with moderate protein unfolding, respectively. Therefore, the E°' value of immobilized SLAC turns out to be particularly sensitive to the anchoring mode and medium conditions.
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Affiliation(s)
- Giulia Di Rocco
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
| | - Gianantonio Battistuzzi
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
| | - Antonio Ranieri
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
- Correspondence: (A.R.); (M.B.)
| | - Carlo Augusto Bortolotti
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
| | - Marco Borsari
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
- Correspondence: (A.R.); (M.B.)
| | - Marco Sola
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
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Adachi T, Mazurenko I, Mano N, Kitazumi Y, Kataoka K, Kano K, Sowa K, Lojou E. Kinetic and thermodynamic analysis of Cu2+-dependent reductive inactivation in direct electron transfer-type bioelectrocatalysis by copper efflux oxidase. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Dey B, Dutta T. Laccases: thriving the domain of Bio-electrocatalysis. Bioelectrochemistry 2022; 146:108144. [DOI: 10.1016/j.bioelechem.2022.108144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 04/21/2022] [Accepted: 04/25/2022] [Indexed: 12/19/2022]
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9
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Roulling F, Godin A, Feller G. Function and versatile location of Met-rich inserts in blue oxidases involved in bacterial copper resistance. Biochimie 2022; 194:118-126. [PMID: 34982982 DOI: 10.1016/j.biochi.2021.12.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 12/07/2021] [Accepted: 12/29/2021] [Indexed: 11/29/2022]
Abstract
Cuproxidases form a subgroup of the blue multicopper oxidase family. They display disordered methionine-rich loops, not observable in most available crystal structures, which have been suggested to bind toxic Cu(I) ions before oxidation into less harmful Cu(II) by the core enzyme. We found that the location of the Met-rich regions is highly variable in bacterial cuproxidases, but always inserted in solvent exposed surface loops, at close proximity of the conserved T1 copper binding site. We took advantage of the large differences in loop length between cold-adapted, mesophilic and thermophilic oxidase homologs to unravel the function of the methionine-rich regions involved in copper detoxification. Using a newly developed anaerobic assay for cuprous ions, it is shown that the number of Cu(I) bound is nearly proportional to the loop lengths in these cuproxidases and to the number of potential Cu(I) ligands in these loops. In order to substantiate this relation, the longest loop in the cold-adapted oxidase was deleted, lowering bound extra Cu(I) from 9 in the wild-type enzyme to 2-3 Cu(I) in deletion mutants. These results demonstrate that methionine-rich loops behave as molecular octopus scavenging toxic cuprous ions in the periplasm and that these regions are essential components of bacterial copper resistance.
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Affiliation(s)
- Frédéric Roulling
- Laboratory of Biochemistry, Center for Protein Engineering - InBioS, University of Liège, Belgium
| | - Amandine Godin
- Laboratory of Biochemistry, Center for Protein Engineering - InBioS, University of Liège, Belgium
| | - Georges Feller
- Laboratory of Biochemistry, Center for Protein Engineering - InBioS, University of Liège, Belgium.
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Öztürk Y, Blaby-Haas CE, Daum N, Andrei A, Rauch J, Daldal F, Koch HG. Maturation of Rhodobacter capsulatus Multicopper Oxidase CutO Depends on the CopA Copper Efflux Pathway and Requires the cutF Product. Front Microbiol 2021; 12:720644. [PMID: 34566924 PMCID: PMC8456105 DOI: 10.3389/fmicb.2021.720644] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 08/18/2021] [Indexed: 11/15/2022] Open
Abstract
Copper (Cu) is an essential cofactor required for redox enzymes in all domains of life. Because of its toxicity, tightly controlled mechanisms ensure Cu delivery for cuproenzyme biogenesis and simultaneously protect cells against toxic Cu. Many Gram-negative bacteria contain extracytoplasmic multicopper oxidases (MCOs), which are involved in periplasmic Cu detoxification. MCOs are unique cuproenzymes because their catalytic center contains multiple Cu atoms, which are required for the oxidation of Cu1+ to the less toxic Cu2+. Hence, Cu is both substrate and essential cofactor of MCOs. Here, we investigated the maturation of Rhodobacter capsulatus MCO CutO and its role in periplasmic Cu detoxification. A survey of CutO activity of R. capsulatus mutants with known defects in Cu homeostasis and in the maturation of the cuproprotein cbb 3-type cytochrome oxidase (cbb 3-Cox) was performed. This revealed that CutO activity is largely independent of the Cu-delivery pathway for cbb 3-Cox biogenesis, except for the cupric reductase CcoG, which is required for full CutO activity. The most pronounced decrease of CutO activity was observed with strains lacking the cytoplasmic Cu chaperone CopZ, or the Cu-exporting ATPase CopA, indicating that CutO maturation is linked to the CopZ-CopA mediated Cu-detoxification pathway. Our data demonstrate that CutO is important for cellular Cu resistance under both aerobic and anaerobic growth conditions. CutO is encoded in the cutFOG operon, but only CutF, and not CutG, is essential for CutO activity. No CutO activity is detectable when cutF or its putative Cu-binding motif are mutated, suggesting that the cutF product serves as a Cu-binding component required for active CutO production. Bioinformatic analyses of CutF-like proteins support their widespread roles as putative Cu-binding proteins for several Cu-relay pathways. Our overall findings show that the cytoplasmic CopZ-CopA dependent Cu detoxification pathway contributes to providing Cu to CutO maturation, a process that strictly relies on cutF.
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Affiliation(s)
- Yavuz Öztürk
- Institut für Biochemie und Molekularbiologie, ZBMZ, Faculty of Medicine, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
- Department of Biology, University of Pennsylvania, Philadelphia, PA, United States
| | - Crysten E. Blaby-Haas
- Biology Department, Brookhaven National Laboratory, Upton, NY, United States
- Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, NY, United States
| | - Noel Daum
- Institut für Biochemie und Molekularbiologie, ZBMZ, Faculty of Medicine, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
| | - Andreea Andrei
- Institut für Biochemie und Molekularbiologie, ZBMZ, Faculty of Medicine, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
- Fakultät für Biologie, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
| | - Juna Rauch
- Institut für Biochemie und Molekularbiologie, ZBMZ, Faculty of Medicine, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
| | - Fevzi Daldal
- Department of Biology, University of Pennsylvania, Philadelphia, PA, United States
| | - Hans-Georg Koch
- Institut für Biochemie und Molekularbiologie, ZBMZ, Faculty of Medicine, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
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Helman SL, Wilkins SJ, McKeating DR, Perkins AV, Whibley PE, Cuffe JSM, Simmons DG, Fuqua BK, Vulpe CD, Wallace DF, O'Callaghan JL, Pelzer ES, Anderson GJ, Frazer DM. The Placental Ferroxidase Zyklopen Is Not Essential for Iron Transport to the Fetus in Mice. J Nutr 2021; 151:2541-2550. [PMID: 34114013 DOI: 10.1093/jn/nxab174] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 03/09/2021] [Accepted: 05/07/2021] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND The ferroxidase zyklopen (Zp) has been implicated in the placental transfer of iron to the fetus. However, the evidence for this is largely circumstantial. OBJECTIVES This study aimed to determine whether Zp is essential for placental iron transfer. METHODS A model was established using 8- to 12-wk-old pregnant C57BL/6 mice on standard rodent chow in which Zp was knocked out in the fetus and fetal components of the placenta. Zp was also disrupted in the entire placenta using global Zp knockout mice. Inductively coupled plasma MS was used to measure total fetal iron, an indicator of the amount of iron transferred by the placenta to the fetus, at embryonic day 18.5 of gestation. Iron transporter expression in the placenta was measured by Western blotting, and the expression of Hamp1, the gene encoding the iron regulatory hormone hepcidin, was determined in fetal liver by real-time PCR. RESULTS There was no change in the amount of iron transferred to the fetus when Zp was disrupted in either the fetal component of the placenta or the entire placenta. No compensatory changes in the expression of the iron transport proteins transferrin receptor 1 or ferroportin were observed, nor was there any change in fetal liver Hamp1 mRNA. Hephl1, the gene encoding Zp, was expressed mainly in the maternal decidua of the placenta and not in the nutrient-transporting syncytiotrophoblast. Disruption of Zp in the whole placenta resulted in a 26% increase in placental size (P < 0.01). CONCLUSIONS Our data indicate that Zp is not essential for the efficient transfer of iron to the fetus in mice and is localized predominantly in the maternal decidua. The increase in placental size observed when Zp is knocked out in the entire placenta suggests that this protein may play a role in placental development.
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Affiliation(s)
- Sheridan L Helman
- Molecular Nutrition Laboratory, QIMR Berghofer Medical Research Institute, Herston, Australia.,Faculty of Medicine, The University of Queensland, St. Lucia, Australia
| | - Sarah J Wilkins
- Iron Metabolism Laboratory, QIMR Berghofer Medical Research Institute, Herston, Australia
| | - Daniel R McKeating
- School of Medical Science, Griffith University, Gold Coast Campus, Southport, Australia
| | - Anthony V Perkins
- School of Medical Science, Griffith University, Gold Coast Campus, Southport, Australia
| | - Page E Whibley
- Molecular Nutrition Laboratory, QIMR Berghofer Medical Research Institute, Herston, Australia
| | - James S M Cuffe
- School of Biomedical Sciences, The University of Queensland, St. Lucia, Australia
| | - David G Simmons
- School of Biomedical Sciences, The University of Queensland, St. Lucia, Australia
| | - Brie K Fuqua
- David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Christopher D Vulpe
- Department of Physiological Sciences, University of Florida, Gainesville, FL, USA
| | - Daniel F Wallace
- School of Biomedical Sciences, Queensland University of Technology, Gardens Point, Australia
| | - Jessica L O'Callaghan
- School of Biomedical Sciences, Queensland University of Technology, Gardens Point, Australia
| | - Elise S Pelzer
- School of Biomedical Sciences, Queensland University of Technology, Gardens Point, Australia
| | - Gregory J Anderson
- Iron Metabolism Laboratory, QIMR Berghofer Medical Research Institute, Herston, Australia.,School of Chemistry and Molecular Bioscience, The University of Queensland, St. Lucia, Australia
| | - David M Frazer
- Molecular Nutrition Laboratory, QIMR Berghofer Medical Research Institute, Herston, Australia.,School of Biomedical Sciences, The University of Queensland, St. Lucia, Australia.,School of Biomedical Sciences, Queensland University of Technology, Gardens Point, Australia
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12
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Cui H, Zhang L, Söder D, Tang X, Davari MD, Schwaneberg U. Rapid and Oriented Immobilization of Laccases on Electrodes via a Methionine-Rich Peptide. ACS Catal 2021. [DOI: 10.1021/acscatal.0c05490] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Haiyang Cui
- Lehrstuhl für Biotechnologie, RWTH Aachen University, Worringerweg 3, Aachen 52074, Germany
- DWI-Leibniz Institut für Interaktive Materialien, Forckenbeckstraße 50, Aachen 52074, Germany
| | - Lingling Zhang
- Lehrstuhl für Biotechnologie, RWTH Aachen University, Worringerweg 3, Aachen 52074, Germany
| | - Dominik Söder
- DWI-Leibniz Institut für Interaktive Materialien, Forckenbeckstraße 50, Aachen 52074, Germany
| | - Xiaomei Tang
- Lehrstuhl für Biotechnologie, RWTH Aachen University, Worringerweg 3, Aachen 52074, Germany
| | - Mehdi D. Davari
- Lehrstuhl für Biotechnologie, RWTH Aachen University, Worringerweg 3, Aachen 52074, Germany
| | - Ulrich Schwaneberg
- Lehrstuhl für Biotechnologie, RWTH Aachen University, Worringerweg 3, Aachen 52074, Germany
- DWI-Leibniz Institut für Interaktive Materialien, Forckenbeckstraße 50, Aachen 52074, Germany
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13
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Mutations in the coordination spheres of T1 Cu affect Cu 2+-activation of the laccase from Thermus thermophilus. Biochimie 2021; 182:228-237. [PMID: 33535124 DOI: 10.1016/j.biochi.2021.01.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 12/15/2020] [Accepted: 01/11/2021] [Indexed: 02/01/2023]
Abstract
Thermus thermophilus laccase belongs to the sub-class of multicopper oxidases that is activated by the extra binding of copper to a methionine-rich domain allowing an electron pathway from the substrate to the conventional first electron acceptor, the T1 Cu. In this work, two key amino acid residues in the 1st and 2nd coordination spheres of T1 Cu are mutated in view of tuning their redox potential and investigating their influence on copper-related activity. Evolution of the kinetic parameters after copper addition highlights that both mutations play a key role influencing the enzymatic activity in distinct unexpected ways. These results clearly indicate that the methionine rich domain is not the only actor in the cuprous oxidase activity of CueO-like enzymes.
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14
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Zhang Y, Lin DF, Hao J, Zhao ZH, Zhang YJ. The crucial role of bacterial laccases in the bioremediation of petroleum hydrocarbons. World J Microbiol Biotechnol 2020; 36:116. [PMID: 32661601 DOI: 10.1007/s11274-020-02888-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 07/02/2020] [Indexed: 12/15/2022]
Abstract
Laccases (EC 1.10.3.2) are a class of metallo-oxidases found in a variety of fungi, plants, and bacteria as well as in certain insects. They can oxidize a wide variety of organic compounds and can be widely applied in many fields, especially in the field of biodegradation and detoxification of environmental pollutants. The practical efficacy of laccases depends on their ability to capture the target substance as well as their catalytic activity, which is related to their catalytic center, substrate selectivity, and substrate tolerance. Over the past few decades, many laccases have been identified in plants and fungi. Concurrently, bacterial laccases have received increasing attention because of their high thermostability and high tolerance to organic compounds. The aim of this review is to summarize the role of bacterial laccases in the bioremediation of petroleum hydrocarbons and to outline the correlation between the molecular structure of the mononuclear T1 Cu center of bacterial laccases and their substrate preference.
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Affiliation(s)
- Yan Zhang
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, Jilin University, Changchun, 130012, People's Republic of China
| | - Dong-Fa Lin
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, Jilin University, Changchun, 130012, People's Republic of China
| | - Jun Hao
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, Jilin University, Changchun, 130012, People's Republic of China
| | - Zhi-Hao Zhao
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, Jilin University, Changchun, 130012, People's Republic of China
| | - Ying-Jiu Zhang
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, Jilin University, Changchun, 130012, People's Republic of China. .,School of Life Science, Jilin University, Changchun, 130012, People's Republic of China.
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15
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Borges PT, Brissos V, Hernandez G, Masgrau L, Lucas MF, Monza E, Frazão C, Cordeiro TN, Martins LO. Methionine-Rich Loop of Multicopper Oxidase McoA Follows Open-to-Close Transitions with a Role in Enzyme Catalysis. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01623] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Patrícia T. Borges
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Vânia Brissos
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Guillem Hernandez
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Laura Masgrau
- Zymvol Biomodeling, Carrer Roc Boronat, 117, 08018 Barcelona, Spain
- Department of Chemistry, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | | | - Emanuele Monza
- Zymvol Biomodeling, Carrer Roc Boronat, 117, 08018 Barcelona, Spain
| | - Carlos Frazão
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Tiago N. Cordeiro
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Lígia O. Martins
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
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16
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ADACHI T, KITAZUMI Y, SHIRAI O, KAWANO T, KATAOKA K, KANO K. Effects of Elimination of α Helix Regions on Direct Electron Transfer-type Bioelectrocatalytic Properties of Copper Efflux Oxidase. ELECTROCHEMISTRY 2020. [DOI: 10.5796/electrochemistry.20-00015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Taiki ADACHI
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University
| | - Yuki KITAZUMI
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University
| | - Osamu SHIRAI
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University
| | - Tenta KAWANO
- Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University
| | - Kunishige KATAOKA
- Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University
| | - Kenji KANO
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University
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17
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Zhang L, Cui H, Dhoke GV, Zou Z, Sauer DF, Davari MD, Schwaneberg U. Engineering of Laccase CueO for Improved Electron Transfer in Bioelectrocatalysis by Semi-Rational Design. Chemistry 2020; 26:4974-4979. [PMID: 31985091 PMCID: PMC7186830 DOI: 10.1002/chem.201905598] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 01/22/2020] [Indexed: 12/20/2022]
Abstract
Copper efflux oxidase (CueO) from Escherichia coli is a special bacterial laccase due to its fifth copper binding site. Herein, it is discovered that the fifth Cu occupancy plays a crucial and favorable role of electron relay in bioelectrocatalytic oxygen reduction. By substituting the residues at the four coordinated positions of the fifth Cu, 11 beneficial variants are identified with ≥2.5-fold increased currents at -250 mV (up to 6.13 mA cm-2 ). Detailed electrocatalytic characterization suggests the microenvironment of the fifth Cu binding site governs the electrocatalytic current of CueO. Additionally, further electron transfer analysis assisted by molecular dynamics (MD) simulation demonstrates that an increase in localized structural stability and a decrease of distance between the fifth Cu and the T1 Cu are two main factors contributing to the improved kinetics of CueO variants. It may guide a novel way to tailor laccases and perhaps other oxidoreductases for bioelectrocatalytic applications.
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Affiliation(s)
- Lingling Zhang
- Institute of BiotechnologyRWTH Aachen UniversityWorringer Weg 352074AachenGermany
| | - Haiyang Cui
- Institute of BiotechnologyRWTH Aachen UniversityWorringer Weg 352074AachenGermany
| | - Gaurao V. Dhoke
- Institute of BiotechnologyRWTH Aachen UniversityWorringer Weg 352074AachenGermany
| | - Zhi Zou
- Institute of BiotechnologyRWTH Aachen UniversityWorringer Weg 352074AachenGermany
- DWI Leibniz-Institute for Interactive MaterialsForckenbeckstrasse 5052074AachenGermany
| | - Daniel F. Sauer
- Institute of BiotechnologyRWTH Aachen UniversityWorringer Weg 352074AachenGermany
| | - Mehdi D. Davari
- Institute of BiotechnologyRWTH Aachen UniversityWorringer Weg 352074AachenGermany
| | - Ulrich Schwaneberg
- Institute of BiotechnologyRWTH Aachen UniversityWorringer Weg 352074AachenGermany
- DWI Leibniz-Institute for Interactive MaterialsForckenbeckstrasse 5052074AachenGermany
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18
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Granja-Travez RS, Persinoti GF, Squina FM, Bugg TDH. Functional genomic analysis of bacterial lignin degraders: diversity in mechanisms of lignin oxidation and metabolism. Appl Microbiol Biotechnol 2020; 104:3305-3320. [PMID: 32088760 DOI: 10.1007/s00253-019-10318-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 12/06/2019] [Accepted: 12/13/2019] [Indexed: 02/07/2023]
Abstract
Although several bacterial lignin-oxidising enzymes have been discovered in recent years, it is not yet clear whether different lignin-degrading bacteria use similar mechanisms for lignin oxidation and degradation of lignin fragments. Genome sequences of 13 bacterial lignin-oxidising bacteria, including new genome sequences for Microbacterium phyllosphaerae and Agrobacterium sp., were analysed for the presence of lignin-oxidising enzymes and aromatic degradation gene clusters that could be used to metabolise the products of lignin degradation. Ten bacterial genomes contain DyP-type peroxidases, and ten bacterial strains contain putative multi-copper oxidases (MCOs), both known to have activity for lignin oxidation. Only one strain lacks both MCOs and DyP-type peroxidase genes. Eleven bacterial genomes contain aromatic degradation gene clusters, of which ten contain the central β-ketoadipate pathway, with variable numbers and types of degradation clusters for other aromatic substrates. Hence, there appear to be diverse metabolic strategies used for lignin oxidation in bacteria, while the β-ketoadipate pathway appears to be the most common route for aromatic metabolism in lignin-degrading bacteria.
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Affiliation(s)
- Rommel Santiago Granja-Travez
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK.,Facultad de Ciencias de la Ingeniería e Industrias, Universidad UTE, Quito, Ecuador
| | | | - Fabio M Squina
- Programa de Processos Tecnológicos e Ambientais, Universidade de Sorocaba, Sorocaba, Brazil
| | - Timothy D H Bugg
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK.
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19
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Kumar A, Chandra R. Ligninolytic enzymes and its mechanisms for degradation of lignocellulosic waste in environment. Heliyon 2020; 6:e03170. [PMID: 32095645 PMCID: PMC7033530 DOI: 10.1016/j.heliyon.2020.e03170] [Citation(s) in RCA: 154] [Impact Index Per Article: 38.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 10/04/2019] [Accepted: 12/31/2019] [Indexed: 12/30/2022] Open
Abstract
Ligninolytic enzymes play a key role in degradation and detoxification of lignocellulosic waste in environment. The major ligninolytic enzymes are laccase, lignin peroxidase, manganese peroxidase, and versatile peroxidase. The activities of these enzymes are enhanced by various mediators as well as some other enzymes (feruloyl esterase, aryl-alcohol oxidase, quinone reductases, lipases, catechol 2, 3-dioxygenase) to facilitate the process for degradation and detoxification of lignocellulosic waste in environment. The structurally laccase is isoenzymes with monomeric or dimeric and glycosylation levels (10–45%). This contains four copper ions of three different types. The enzyme catalyzes the overall reaction: 4 benzenediol + O2 to 4 benzosemiquinone + 2H2O. While, lignin peroxidase is a glycoprotein molecular mass of 38–46 kDa containing one mole of iron protoporphyrin IX per one mol of protein, catalyzes the H2O2 dependent oxidative depolymerization of lignin. The manganese peroxidase is a glycosylated heme protein with molecular mass of 40–50kDa. It depolymerizes the lignin molecule in the presence of manganese ion. The versatile peroxidase has broad range substrate sharing typical features of the manganese and lignin peroxidase families. Although ligninolytic enzymes have broad range of industrial application specially the degradation and detoxification of lignocellulosic waste discharged from various industrial activities, its large scale application is still limited due to lack of limited production. Further, the extremophilic properties of ligninolytic enzymes indicated their broad prospects in varied environmental conditions. Therefore it needs more extensive research for understanding its structure and mechanisms for broad range commercial applications.
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Affiliation(s)
- Adarsh Kumar
- Department of Environmental Microbiology, School for Environmental Sciences, Babasaheb Bhimrao Ambedkar (A Central) University, Vidya Vihar, Raebareli Road, Lucknow, Uttar Pradesh, 226025, India
| | - Ram Chandra
- Department of Environmental Microbiology, School for Environmental Sciences, Babasaheb Bhimrao Ambedkar (A Central) University, Vidya Vihar, Raebareli Road, Lucknow, Uttar Pradesh, 226025, India
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20
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Valles M, Kamaruddin AF, Wong LS, Blanford CF. Inhibition in multicopper oxidases: a critical review. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00724b] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
This review critiques the literature on inhibition of O2-reduction catalysis in multicopper oxidases like laccase and bilirubin oxidase and provide recommendations for best practice when carrying out experiments and interpreting published data.
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Affiliation(s)
- Morgane Valles
- Manchester Institute of Biotechnology
- University of Manchester
- Manchester
- UK
- Department of Chemistry
| | - Amirah F. Kamaruddin
- Manchester Institute of Biotechnology
- University of Manchester
- Manchester
- UK
- Department of Materials
| | - Lu Shin Wong
- Manchester Institute of Biotechnology
- University of Manchester
- Manchester
- UK
- Department of Chemistry
| | - Christopher F. Blanford
- Manchester Institute of Biotechnology
- University of Manchester
- Manchester
- UK
- Department of Materials
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21
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Hitaishi VP, Clément R, Quattrocchi L, Parent P, Duché D, Zuily L, Ilbert M, Lojou E, Mazurenko I. Interplay between Orientation at Electrodes and Copper Activation of Thermus thermophilus Laccase for O2 Reduction. J Am Chem Soc 2019; 142:1394-1405. [DOI: 10.1021/jacs.9b11147] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Vivek Pratap Hitaishi
- Aix Marseille Univ, CNRS, BIP UMR 7281, 31 Chemin Aiguier, CS 70071, 13402 Marseille, Cedex 09, France
- Aix Marseille Univ, CNRS, IMM FR 3479, 31 Chemin Aiguier, CS 70071, 13402 Marseille, Cedex 09, France
| | - Romain Clément
- Aix Marseille Univ, CNRS, BIP UMR 7281, 31 Chemin Aiguier, CS 70071, 13402 Marseille, Cedex 09, France
- Aix Marseille Univ, CNRS, IMM FR 3479, 31 Chemin Aiguier, CS 70071, 13402 Marseille, Cedex 09, France
| | - Ludovica Quattrocchi
- Aix Marseille Univ, CNRS, BIP UMR 7281, 31 Chemin Aiguier, CS 70071, 13402 Marseille, Cedex 09, France
- Aix Marseille Univ, CNRS, IMM FR 3479, 31 Chemin Aiguier, CS 70071, 13402 Marseille, Cedex 09, France
| | - Philippe Parent
- Aix Marseille Univ, CNRS, CINAM UMR 7325, Campus de Luminy, 13288 Marseille, Cedex 09, France
| | - David Duché
- Aix Marseille Univ, Université de Toulon, CNRS, IM2NP UMR 7334, 13397 Marseille, France
| | - Lisa Zuily
- Aix Marseille Univ, CNRS, BIP UMR 7281, 31 Chemin Aiguier, CS 70071, 13402 Marseille, Cedex 09, France
- Aix Marseille Univ, CNRS, IMM FR 3479, 31 Chemin Aiguier, CS 70071, 13402 Marseille, Cedex 09, France
| | - Marianne Ilbert
- Aix Marseille Univ, CNRS, BIP UMR 7281, 31 Chemin Aiguier, CS 70071, 13402 Marseille, Cedex 09, France
- Aix Marseille Univ, CNRS, IMM FR 3479, 31 Chemin Aiguier, CS 70071, 13402 Marseille, Cedex 09, France
| | - Elisabeth Lojou
- Aix Marseille Univ, CNRS, BIP UMR 7281, 31 Chemin Aiguier, CS 70071, 13402 Marseille, Cedex 09, France
- Aix Marseille Univ, CNRS, IMM FR 3479, 31 Chemin Aiguier, CS 70071, 13402 Marseille, Cedex 09, France
| | - Ievgen Mazurenko
- Aix Marseille Univ, CNRS, BIP UMR 7281, 31 Chemin Aiguier, CS 70071, 13402 Marseille, Cedex 09, France
- Aix Marseille Univ, CNRS, IMM FR 3479, 31 Chemin Aiguier, CS 70071, 13402 Marseille, Cedex 09, France
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22
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Udagedara SR, Wijekoon CJ, Xiao Z, Wedd AG, Maher MJ. The crystal structure of the CopC protein from Pseudomonas fluorescens reveals amended classifications for the CopC protein family. J Inorg Biochem 2019; 195:194-200. [DOI: 10.1016/j.jinorgbio.2019.03.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 02/26/2019] [Accepted: 03/07/2019] [Indexed: 01/09/2023]
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23
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Sharma P, Reichert M, Lu Y, Markello TC, Adams DR, Steinbach PJ, Fuqua BK, Parisi X, Kaler SG, Vulpe CD, Anderson GJ, Gahl WA, Malicdan MCV. Biallelic HEPHL1 variants impair ferroxidase activity and cause an abnormal hair phenotype. PLoS Genet 2019; 15:e1008143. [PMID: 31125343 PMCID: PMC6534290 DOI: 10.1371/journal.pgen.1008143] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 04/16/2019] [Indexed: 11/18/2022] Open
Abstract
Maintenance of the correct redox status of iron is functionally important for critical biological processes. Multicopper ferroxidases play an important role in oxidizing ferrous iron, released from the cells, into ferric iron, which is subsequently distributed by transferrin. Two well-characterized ferroxidases, ceruloplasmin (CP) and hephaestin (HEPH) facilitate this reaction in different tissues. Recently, a novel ferroxidase, Hephaestin like 1 (HEPHL1), also known as zyklopen, was identified. Here we report a child with compound heterozygous mutations in HEPHL1 (NM_001098672) who presented with abnormal hair (pili torti and trichorrhexis nodosa) and cognitive dysfunction. The maternal missense mutation affected mRNA splicing, leading to skipping of exon 5 and causing an in-frame deletion of 85 amino acids (c.809_1063del; p.Leu271_ala355del). The paternal mutation (c.3176T>C; p.Met1059Thr) changed a highly conserved methionine that is part of a typical type I copper binding site in HEPHL1. We demonstrated that HEPHL1 has ferroxidase activity and that the patient's two mutations exhibited loss of this ferroxidase activity. Consistent with these findings, the patient's fibroblasts accumulated intracellular iron and exhibited reduced activity of the copper-dependent enzyme, lysyl oxidase. These results suggest that the patient's biallelic variants are loss-of-function mutations. Hence, we generated a Hephl1 knockout mouse model that was viable and had curly whiskers, consistent with the hair phenotype in our patient. These results enhance our understanding of the function of HEPHL1 and implicate altered ferroxidase activity in hair growth and hair disorders.
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Affiliation(s)
- Prashant Sharma
- NIH Undiagnosed Diseases Program, Common Fund, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, United States of America
- Office of the Clinical Director, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Marie Reichert
- NIH Undiagnosed Diseases Program, Common Fund, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, United States of America
- Office of the Clinical Director, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Yan Lu
- Iron Metabolism Laboratory, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Thomas C. Markello
- NIH Undiagnosed Diseases Program, Common Fund, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, United States of America
- Office of the Clinical Director, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, United States of America
- Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland Bethesda, Maryland, United States of America
| | - David R. Adams
- NIH Undiagnosed Diseases Program, Common Fund, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, United States of America
- Office of the Clinical Director, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Peter J. Steinbach
- Center for Molecular Modeling, Center for Information Technology, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Brie K. Fuqua
- Department of Medicine, University of California, Los Angeles, United States of America
| | - Xenia Parisi
- NIH Undiagnosed Diseases Program, Common Fund, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, United States of America
- Office of the Clinical Director, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Stephen G. Kaler
- Section on Translational Neuroscience, Molecular Medicine Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Christopher D. Vulpe
- Center for Environmental and Human Toxicology, Department of Physiological Sciences, University of Florida, Gainesville, Florida, United States of America
| | - Gregory J. Anderson
- Iron Metabolism Laboratory, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - William A. Gahl
- NIH Undiagnosed Diseases Program, Common Fund, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, United States of America
- Office of the Clinical Director, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, United States of America
- Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland Bethesda, Maryland, United States of America
| | - May Christine V. Malicdan
- NIH Undiagnosed Diseases Program, Common Fund, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, United States of America
- Office of the Clinical Director, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, United States of America
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24
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Zhang L, Cui H, Zou Z, Garakani TM, Novoa-Henriquez C, Jooyeh B, Schwaneberg U. Directed Evolution of a Bacterial Laccase (CueO) for Enzymatic Biofuel Cells. Angew Chem Int Ed Engl 2019; 58:4562-4565. [PMID: 30689276 DOI: 10.1002/anie.201814069] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 01/25/2019] [Indexed: 11/10/2022]
Abstract
Escherichia coli's copper efflux oxidase (CueO) has rarely been employed in the cathodic compartment of enzymatic biofuel cells (EBFCs) due to its low redox potential (0.36 V vs. Ag/AgCl, pH 5.5) towards O2 reduction. Herein, directed evolution of CueO towards a more positive onset potential was performed in an electrochemical screening system. An improved CueO variant (D439T/L502K) was obtained with a significantly increased onset potential (0.54 V), comparable to that of high-redox-potential fungal laccases. Upon coupling with an anodic compartment, the EBFC exhibited an open-circuit voltage (Voc ) of 0.56 V. Directed enzyme evolution by tailoring enzymes to application conditions in EBFCs has been validated and might, in combination with molecular understanding, enable future breakthroughs in EBFC performance.
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Affiliation(s)
- Lingling Zhang
- Institute of Biotechnology, RWTH Aachen University, Worringer Weg 3, 52074, Aachen, Germany
| | - Haiyang Cui
- Institute of Biotechnology, RWTH Aachen University, Worringer Weg 3, 52074, Aachen, Germany
| | - Zhi Zou
- Institute of Biotechnology, RWTH Aachen University, Worringer Weg 3, 52074, Aachen, Germany.,DWI Leibniz-Institute for Interactive Materials, Forckenbeckstrasse 50, 52074, Aachen, Germany
| | | | - Catalina Novoa-Henriquez
- Institute of Biotechnology, RWTH Aachen University, Worringer Weg 3, 52074, Aachen, Germany.,DWI Leibniz-Institute for Interactive Materials, Forckenbeckstrasse 50, 52074, Aachen, Germany
| | - Bahareh Jooyeh
- Institute of Biotechnology, RWTH Aachen University, Worringer Weg 3, 52074, Aachen, Germany
| | - Ulrich Schwaneberg
- Institute of Biotechnology, RWTH Aachen University, Worringer Weg 3, 52074, Aachen, Germany.,DWI Leibniz-Institute for Interactive Materials, Forckenbeckstrasse 50, 52074, Aachen, Germany
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25
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Zhang L, Cui H, Zou Z, Garakani TM, Novoa‐Henriquez C, Jooyeh B, Schwaneberg U. Directed Evolution of a Bacterial Laccase (CueO) for Enzymatic Biofuel Cells. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814069] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lingling Zhang
- Institute of Biotechnology RWTH Aachen University Worringer Weg 3 52074 Aachen Germany
| | - Haiyang Cui
- Institute of Biotechnology RWTH Aachen University Worringer Weg 3 52074 Aachen Germany
| | - Zhi Zou
- Institute of Biotechnology RWTH Aachen University Worringer Weg 3 52074 Aachen Germany
- DWI Leibniz-Institute for Interactive Materials Forckenbeckstrasse 50 52074 Aachen Germany
| | | | - Catalina Novoa‐Henriquez
- Institute of Biotechnology RWTH Aachen University Worringer Weg 3 52074 Aachen Germany
- DWI Leibniz-Institute for Interactive Materials Forckenbeckstrasse 50 52074 Aachen Germany
| | - Bahareh Jooyeh
- Institute of Biotechnology RWTH Aachen University Worringer Weg 3 52074 Aachen Germany
| | - Ulrich Schwaneberg
- Institute of Biotechnology RWTH Aachen University Worringer Weg 3 52074 Aachen Germany
- DWI Leibniz-Institute for Interactive Materials Forckenbeckstrasse 50 52074 Aachen Germany
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26
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Sana B, Chee SMQ, Wongsantichon J, Raghavan S, Robinson RC, Ghadessy FJ. Development and structural characterization of an engineered multi-copper oxidase reporter of protein-protein interactions. J Biol Chem 2019; 294:7002-7012. [PMID: 30770473 PMCID: PMC6497955 DOI: 10.1074/jbc.ra118.007141] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Revised: 02/10/2019] [Indexed: 12/13/2022] Open
Abstract
Protein–protein interactions (PPIs) are ubiquitous in almost all biological processes and are often corrupted in diseased states. A detailed understanding of PPIs is therefore key to understanding cellular physiology and can yield attractive therapeutic targets. Here, we describe the development and structural characterization of novel Escherichia coli CueO multi-copper oxidase variants engineered to recapitulate protein–protein interactions with commensurate modulation of their enzymatic activities. The fully integrated single-protein sensors were developed through modular grafting of ligand-specific peptides into a highly compliant and flexible methionine-rich loop of CueO. Sensitive detection of diverse ligand classes exemplified by antibodies, an E3 ligase, MDM2 proto-oncogene (MDM2), and protease (SplB from Staphylococcus aureus) was achieved in a simple mix and measure homogeneous format with visually observable colorimetric readouts. Therapeutic antagonism of MDM2 by small molecules and peptides in clinical development for treatment of cancer patients was assayed using the MDM2-binding CueO enzyme. Structural characterization of the free and MDM2-bound CueO variant provided functional insight into signal-transducing mechanisms of the engineered enzymes and highlighted the robustness of CueO as a stable and compliant scaffold for multiple applications.
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Affiliation(s)
- Barindra Sana
- From the p53 Laboratory, Agency for Science, Technology, and Research (A*STAR), 8A Biomedical Grove, Singapore 138648, Singapore
| | - Sharon M Q Chee
- From the p53 Laboratory, Agency for Science, Technology, and Research (A*STAR), 8A Biomedical Grove, Singapore 138648, Singapore
| | - Jantana Wongsantichon
- the Mahidol-Oxford Tropical Medicine Research Unit, Mahidol University, Bangkok 10400, Thailand, and.,the Institute of Molecular and Cellular Biology, A*STAR, 61 Biopolis Drive, Singapore 138673, Singapore
| | - Sarada Raghavan
- From the p53 Laboratory, Agency for Science, Technology, and Research (A*STAR), 8A Biomedical Grove, Singapore 138648, Singapore
| | - Robert C Robinson
- the Institute of Molecular and Cellular Biology, A*STAR, 61 Biopolis Drive, Singapore 138673, Singapore
| | - Farid J Ghadessy
- From the p53 Laboratory, Agency for Science, Technology, and Research (A*STAR), 8A Biomedical Grove, Singapore 138648, Singapore,
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27
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Navas LE, Martínez FD, Taverna ME, Fetherolf MM, Eltis LD, Nicolau V, Estenoz D, Campos E, Benintende GB, Berretta MF. A thermostable laccase from Thermus sp. 2.9 and its potential for delignification of Eucalyptus biomass. AMB Express 2019; 9:24. [PMID: 30756202 PMCID: PMC6372703 DOI: 10.1186/s13568-019-0748-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 02/04/2019] [Indexed: 11/25/2022] Open
Abstract
Laccases are multicopper oxidases that are being studied for their potential application in pretreatment strategies of lignocellulosic feedstocks for bioethanol production. Here, we report the expression and characterization of a predicted laccase (LAC_2.9) from the thermophilic bacterial strain Thermus sp. 2.9 and investigate its capacity to delignify lignocellulosic biomass. The purified enzyme displayed a blue color typical of laccases, showed strict copper dependence and retained 80% of its activity after 16 h at 70 °C. At 60 °C, the enzyme oxidized 2,2′-azino-di-(3-ethylbenzthiazoline sulfonate) (ABTS) and 2,6-dimethoxyphenol (DMP) at optimal pH of 5 and 6, respectively. LAC_2.9 had higher substrate specificity (kcat/KM) for DMP with a calculated value that accounts for one of the highest reported for laccases. Further, the enzyme oxidized a phenolic lignin model dimer. The incubation of steam-exploded eucalyptus biomass with LAC_2.9 and 1-hydroxybenzotriazole (HBT) as mediator changed the structural properties of the lignocellulose as evidenced by Fourier transform infrared (FTIR) spectroscopy and thermo-gravimetric analysis (TGA). However, this did not increase the yield of sugars released by enzymatic saccharification. In conclusion, LAC_2.9 is a thermostable laccase with potential application in the delignification of lignocellulosic biomass.
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28
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Abstract
Metals and metalloids have been used alongside antibiotics in livestock production for a long time. The potential and acute negative impact on the environment and human health of these livestock feed supplements has prompted lawmakers to ban or discourage the use of some or all of these supplements. This article provides an overview of current use in the European Union and the United States, detected metal resistance determinants, and the proteins and mechanisms responsible for conferring copper and zinc resistance in bacteria. A detailed description of the most common copper and zinc metal resistance determinants is given to illustrate not only the potential danger of coselecting antibiotic resistance genes but also the potential to generate bacterial strains with an increased potential to be pathogenic to humans. For example, the presence of a 20-gene copper pathogenicity island is highlighted since bacteria containing this gene cluster could be readily isolated from copper-fed pigs, and many pathogenic strains, including Escherichia coli O104:H4, contain this potential virulence factor, suggesting a potential link between copper supplements in livestock and the evolution of pathogens.
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29
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Crystal structures of multicopper oxidase CueO G304K mutant: structural basis of the increased laccase activity. Sci Rep 2018; 8:14252. [PMID: 30250139 PMCID: PMC6155172 DOI: 10.1038/s41598-018-32446-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 09/05/2018] [Indexed: 01/13/2023] Open
Abstract
The multicopper oxidase CueO is involved in copper homeostasis and copper (Cu) tolerance in Escherichia coli. The laccase activity of CueO G304K mutant is higher than wild-type CueO. To explain this increase in activity, we solved the crystal structure of G304K mutant at 1.49 Å. Compared with wild-type CueO, the G304K mutant showed dramatic conformational changes in methionine-rich helix and the relative regulatory loop (R-loop). We further solved the structure of Cu-soaked enzyme, and found that the addition of Cu ions induced further conformational changes in the R-loop and methionine-rich helix as a result of the new Cu-binding sites on the enzyme's surface. We propose a mechanism for the enhanced laccase activity of the G304K mutant, where movements of the R-loop combined with the changes of the methionine-rich region uncover the T1 Cu site allowing greater access of the substrate. Two of the G304K double mutants showed the enhanced or decreased laccase activity, providing further evidence for the interaction between the R-loop and the methionine-rich region. The cuprous oxidase activity of these mutants was about 20% that of wild-type CueO. These structural features of the G304K mutant provide clues for designing specific substrate-binding mutants in the biotechnological applications.
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30
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Chumillas S, Maestro B, Feliu JM, Climent V. Comprehensive Study of the Enzymatic Catalysis of the Electrochemical Oxygen Reduction Reaction (ORR) by Immobilized Copper Efflux Oxidase (CueO) From Escherichia coli. Front Chem 2018; 6:358. [PMID: 30197881 PMCID: PMC6117412 DOI: 10.3389/fchem.2018.00358] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 07/30/2018] [Indexed: 11/23/2022] Open
Abstract
In recent years, enzymatic fuel cells have experienced a great development promoted by the availability of novel biological techniques that allow the access to a large number of enzymatic catalysts. One of the most important aspects in this area is the development of biocatalysts for the oxygen reduction reaction (ORR). Laccases from the group of enzymes called blue multi-cooper oxidases have received considerable attention because of their ability to catalyze the electrochemical oxygen reduction reaction to water when immobilized on metallic or carbonaceous electrode materials. In this paper we report a comprehensive study of the electrocatalytic activity of the enzyme Copper efflux oxidase (CueO) from Escherichia coli immobilized on different electrode materials. The influence of the electrode substrate employed for protein immobilization was evaluated using glassy carbon, gold or platinum electrodes. Gold and platinum electrodes were modified using different self-assembled monolayers (SAM) able to tune the electrostatic interaction between the protein and the substrate, depending on the nature of the terminal functional group in the SAM. The effects of protein immobilization time, electrode potential, solution pH and temperature, protein and O2 concentration have been carefully investigated. Finally, direct electron transfer (DET) was investigated in the presence of the following inhibitors: fluoride (F−), chloride (Cl−) and azide (N3-).
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Affiliation(s)
- Sara Chumillas
- Institute of Electrochemistry, University of Alicante, Alicante, Spain
| | - Beatriz Maestro
- Instituto de Biología Molecular y Celular, Universidad Miguel Hernández, Elche, Spain
| | - Juan M Feliu
- Institute of Electrochemistry, University of Alicante, Alicante, Spain
| | - Víctor Climent
- Institute of Electrochemistry, University of Alicante, Alicante, Spain
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31
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Bello-Gil D, Roig-Molina E, Fonseca J, Sarmiento-Ferrández MD, Ferrándiz M, Franco E, Mira E, Maestro B, Sanz JM. An enzymatic system for decolorization of wastewater dyes using immobilized CueO laccase-like multicopper oxidase on poly-3-hydroxybutyrate. Microb Biotechnol 2018; 11:881-892. [PMID: 29896867 PMCID: PMC6116751 DOI: 10.1111/1751-7915.13287] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 04/28/2018] [Accepted: 05/24/2018] [Indexed: 01/06/2023] Open
Abstract
The presence of synthetic dyes in wastewaters generated by the textile industry constitutes a serious environmental and health problem that urges the scientific community on an appropriate action. As a proof‐of‐concept, we have developed a novel approach to design enzymatic bioreactors with the ability to decolorize dye solutions through the immobilization of the bacterial CueO laccase‐like multicopper oxidase from Escherichia coli on polyhydroxybutyrate (PHB) beads by making use of the BioF affinity tag. The decolorization efficiency of the system was characterized by a series of parameters, namely maximum enzyme adsorption capacity, pH profile, kinetic constants, substrate range, temperature and bioreactor recycling. Depending on the tested dye, immobilization increased the catalytic activity of CueO by up to 40‐fold with respect to the soluble enzyme, reaching decolorization efficiencies of 45–90%. Our results indicate that oxidase bioreactors based on polyhydroxyalkanoates are a promising alternative for the treatment of coloured industrial wastewaters.
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Affiliation(s)
- Daniel Bello-Gil
- Instituto de Biología Molecular y Celular, Universidad Miguel Hernández, Avda. Universidad s/n, 03202, Elche, Spain
| | - Emma Roig-Molina
- Instituto de Biología Molecular y Celular, Universidad Miguel Hernández, Avda. Universidad s/n, 03202, Elche, Spain
| | - Jennifer Fonseca
- Instituto de Biología Molecular y Celular, Universidad Miguel Hernández, Avda. Universidad s/n, 03202, Elche, Spain
| | | | - Marcela Ferrándiz
- Biotechnology Research Group, Textile Research Institute (AITEX), Plaza Emilio Sala 1, 03801, Alcoy, Spain
| | - Esther Franco
- Biotechnology Research Group, Textile Research Institute (AITEX), Plaza Emilio Sala 1, 03801, Alcoy, Spain
| | - Elena Mira
- Biotechnology Research Group, Textile Research Institute (AITEX), Plaza Emilio Sala 1, 03801, Alcoy, Spain
| | - Beatriz Maestro
- Instituto de Biología Molecular y Celular, Universidad Miguel Hernández, Avda. Universidad s/n, 03202, Elche, Spain
| | - Jesús M Sanz
- Instituto de Biología Molecular y Celular, Universidad Miguel Hernández, Avda. Universidad s/n, 03202, Elche, Spain.,Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas, c/Ramiro de Maeztu 9, 28040, Madrid, Spain
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32
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Berini F, Verce M, Ausec L, Rosini E, Tonin F, Pollegioni L, Mandić-Mulec I. Isolation and characterization of a heterologously expressed bacterial laccase from the anaerobe Geobacter metallireducens. Appl Microbiol Biotechnol 2018; 102:2425-2439. [DOI: 10.1007/s00253-018-8785-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 01/09/2018] [Accepted: 01/14/2018] [Indexed: 12/01/2022]
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33
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Samygina VR, Sokolov AV, Bourenkov G, Schneider TR, Anashkin VA, Kozlov SO, Kolmakov NN, Vasilyev VB. Rat ceruloplasmin: a new labile copper binding site and zinc/copper mosaic. Metallomics 2017; 9:1828-1838. [PMID: 29177316 DOI: 10.1039/c7mt00157f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Ceruloplasmin (Cp) is a copper-containing multifunctional oxidase of plasma, an antioxidant, an acute-phase protein and a free radical scavenger. The structural organization of Cp causes its sensitivity to proteolysis and ROS (reactive oxygen species), which can alter some of the important Cp functions. Elucidation of the orthorhombic crystal structure of rat Cp at 2.3 Å resolution revealed the basis for stronger resistance of rat Cp to proteolysis and a new labile copper binding site. The presence of this site appears as a very rare and distinctive feature of rat Cp as was shown by sequence alignment of ceruloplasmin, hephaestin and zyklopen in the Deuterostomia taxonomic group. The trigonal crystal form of rat Cp at 3.2 Å demonstrates unexpected partial substitution of copper by zinc.
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Affiliation(s)
- V R Samygina
- Shubnikov Institute of Crystallography of FSRC "Crystallography and Photonics" RAS, Leninsky pr.59, Moscow 117333, Russia. and NRC Kurchatov Institute, Kurchatov pl. 1, Moscow 123098, Russia
| | - A V Sokolov
- Institute of Experimental Medicine, ul. Academica Pavlova, 12, Saint-Petersburg 197376, Russia and Saint-Petersburg State Universisty, Universitetskaya nab. 7-9, Saint-Petersburg 199034, Russia and Centre of Preclinical Translational Research, Almazov National Medical Research Centre, ul. Dolgoozernaya, 43, Saint-Petersburg 197371, Russia
| | - G Bourenkov
- EMBL, Notkestrasse 85, 22607 Hamburg, Germany
| | | | - V A Anashkin
- Shubnikov Institute of Crystallography of FSRC "Crystallography and Photonics" RAS, Leninsky pr.59, Moscow 117333, Russia. and Belozersky Institute of Physico-Chemical Biology and Department of Chemistry, Lomonosov Moscow State University, Moscow 119899, Russia
| | - S O Kozlov
- Institute of Experimental Medicine, ul. Academica Pavlova, 12, Saint-Petersburg 197376, Russia
| | - N N Kolmakov
- Institute of Experimental Medicine, ul. Academica Pavlova, 12, Saint-Petersburg 197376, Russia
| | - V B Vasilyev
- Institute of Experimental Medicine, ul. Academica Pavlova, 12, Saint-Petersburg 197376, Russia and Saint-Petersburg State Universisty, Universitetskaya nab. 7-9, Saint-Petersburg 199034, Russia
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34
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Chauhan PS, Goradia B, Saxena A. Bacterial laccase: recent update on production, properties and industrial applications. 3 Biotech 2017; 7:323. [PMID: 28955620 PMCID: PMC5602783 DOI: 10.1007/s13205-017-0955-7] [Citation(s) in RCA: 108] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 09/07/2017] [Indexed: 01/17/2023] Open
Abstract
Laccases (benzenediol: oxygen oxidoreductase, EC 1.10.3.2) are multi-copper enzymes which catalyze the oxidation of a wide range of phenolic and non-phenolic aromatic compounds in the presence or absence of a mediator. Till date, laccases have mostly been isolated from fungi and plants, whereas laccase from bacteria has not been well studied. Bacterial laccases have several unique properties that are not characteristics of fungal laccases such as stability at high temperature and high pH. Bacteria produce these enzymes either extracellularly or intracellularly and their activity is in a wide range of temperature and pH. It has application in pulp biobleaching, bioremediation, textile dye decolorization, pollutant degradation, biosensors, etc. Hence, comprehensive information including sources, production conditions, characterization, cloning and biotechnological applications is needed for the effective understanding and application of these enzymes at the industrial level. The present review provides exhaustive information of bacterial laccases reported till date.
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Affiliation(s)
- Prakram Singh Chauhan
- School of Biological Sciences, G. B. Pant, University of Agricultural and Technology, Pantnagar, Uttarakhand 263145 India
| | - Bindi Goradia
- Marine Biotechnology and Ecology Division, Council of Scientific and Industrial Research – Central Salt & Marine Chemicals Research Institute (CSIR-CSMCRI), Bhavnagar, Gujarat 364 021 India
| | - Arunika Saxena
- Department of Chemistry, Samrat Prithviraj Chauhan Government College, Beawar Road, Ajmer, Rajasthan 305001 India
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35
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Koh EI, Robinson AE, Bandara N, Rogers BE, Henderson JP. Copper import in Escherichia coli by the yersiniabactin metallophore system. Nat Chem Biol 2017; 13:1016-1021. [PMID: 28759019 PMCID: PMC5562518 DOI: 10.1038/nchembio.2441] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 06/20/2017] [Indexed: 12/13/2022]
Abstract
Copper plays a dual role as nutrient and toxin during bacterial infections. While uropathogenic Escherichia coli (UPEC) strains can use the copper-binding metallophore yersiniabactin (Ybt) to resist copper toxicity, Ybt also converts bioavailable copper to Cu(II)-Ybt in low copper conditions. Although E. coli have long been considered to lack a copper import pathway, we observed Ybt-mediated copper import in UPEC using canonical Fe(III)-Ybt transport proteins. UPEC removed copper from Cu(II)-Ybt with subsequent re-export of metal-free Ybt to the extracellular space. Copper released through this process became available to an E. coli cuproenzyme (the amine oxidase TynA), linking this import pathway to a nutrient acquisition function. Ybt-expressing E. coli thus engage in nutritional passivation, a strategy of minimizing a metal ion's toxicity while preserving its nutritional availability. Copper acquisition through this process may contribute to the marked virulence defect of Ybt transport-deficient UPEC.
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Affiliation(s)
- Eun-Ik Koh
- Center for Women's Infectious Diseases Research, Washington University School of Medicine, St. Louis, Missouri, USA.,Division of Infectious Diseases, Washington University School of Medicine, St. Louis, Missouri, USA.,Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Anne E Robinson
- Center for Women's Infectious Diseases Research, Washington University School of Medicine, St. Louis, Missouri, USA.,Division of Infectious Diseases, Washington University School of Medicine, St. Louis, Missouri, USA.,Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Nilantha Bandara
- Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Buck E Rogers
- Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Jeffrey P Henderson
- Center for Women's Infectious Diseases Research, Washington University School of Medicine, St. Louis, Missouri, USA.,Division of Infectious Diseases, Washington University School of Medicine, St. Louis, Missouri, USA.,Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
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36
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Tao L, Stich TA, Liou SH, Soldatova AV, Delgadillo DA, Romano CA, Spiro TG, Goodin DB, Tebo BM, Casey WH, Britt RD. Copper Binding Sites in the Manganese-Oxidizing Mnx Protein Complex Investigated by Electron Paramagnetic Resonance Spectroscopy. J Am Chem Soc 2017; 139:8868-8877. [DOI: 10.1021/jacs.7b02277] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
| | | | | | - Alexandra V. Soldatova
- Department
of Chemistry, University of Washington, Box 351700, Seattle, Washington 98195, United States
| | - David A. Delgadillo
- Department of Chemistry & Chemical Biology, University of California, 5200 North Lake Road, Merced, California 95343, United States
| | - Christine A. Romano
- Division of Environmental and Biomolecular Systems, Institute of Environmental Health, Oregon Health & Science University, Portland, Oregon 97239, United States
| | - Thomas G. Spiro
- Department
of Chemistry, University of Washington, Box 351700, Seattle, Washington 98195, United States
| | | | - Bradley M. Tebo
- Division of Environmental and Biomolecular Systems, Institute of Environmental Health, Oregon Health & Science University, Portland, Oregon 97239, United States
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37
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The first acidobacterial laccase-like multicopper oxidase revealed by metagenomics shows high salt and thermo-tolerance. Appl Microbiol Biotechnol 2017; 101:6261-6276. [DOI: 10.1007/s00253-017-8345-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2017] [Revised: 05/08/2017] [Accepted: 05/10/2017] [Indexed: 01/10/2023]
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38
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Gerber H, Wu F, Dimitrov M, Garcia Osuna GM, Fraering PC. Zinc and Copper Differentially Modulate Amyloid Precursor Protein Processing by γ-Secretase and Amyloid-β Peptide Production. J Biol Chem 2017; 292:3751-3767. [PMID: 28096459 DOI: 10.1074/jbc.m116.754101] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 01/13/2017] [Indexed: 11/06/2022] Open
Abstract
Recent evidence suggests involvement of biometal homeostasis in the pathological mechanisms in Alzheimer's disease (AD). For example, increased intracellular copper or zinc has been linked to a reduction in secreted levels of the AD-causing amyloid-β peptide (Aβ). However, little is known about whether these biometals modulate the generation of Aβ. In the present study we demonstrate in both cell-free and cell-based assays that zinc and copper regulate Aβ production by distinct molecular mechanisms affecting the processing by γ-secretase of its Aβ precursor protein substrate APP-C99. We found that Zn2+ induces APP-C99 dimerization, which prevents its cleavage by γ-secretase and Aβ production, with an IC50 value of 15 μm Importantly, at this concentration, Zn2+ also drastically raised the production of the aggregation-prone Aβ43 found in the senile plaques of AD brains and elevated the Aβ43:Aβ40 ratio, a promising biomarker for neurotoxicity and AD. We further demonstrate that the APP-C99 histidine residues His-6, His-13, and His-14 control the Zn2+-dependent APP-C99 dimerization and inhibition of Aβ production, whereas the increased Aβ43:Aβ40 ratio is substrate dimerization-independent and involves the known Zn2+ binding lysine Lys-28 residue that orientates the APP-C99 transmembrane domain within the lipid bilayer. Unlike zinc, copper inhibited Aβ production by directly targeting the subunits presenilin and nicastrin in the γ-secretase complex. Altogether, our data demonstrate that zinc and copper differentially modulate Aβ production. They further suggest that dimerization of APP-C99 or the specific targeting of individual residues regulating the production of the long, toxic Aβ species, may offer two therapeutic strategies for preventing AD.
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Affiliation(s)
- Hermeto Gerber
- From the Foundation Eclosion, CH-1228 Plan-Les-Ouates, and Campus Biotech Innovation Park, CH-1202 Geneva, Switzerland.,the Brain Mind Institute and School of Life Sciences, Swiss Federal Institute of Technology (EPFL), CH-1015 Lausanne, Switzerland.,the Department of Biology, University of Fribourg, CH-1700 Fribourg, Switzerland, and
| | - Fang Wu
- the Brain Mind Institute and School of Life Sciences, Swiss Federal Institute of Technology (EPFL), CH-1015 Lausanne, Switzerland.,the Key Laboratory of Systems Biomedicine, Ministry of Education, Shanghai Center for Systems Biomedicine, Shanghai Jiao Tong University, 200240 Shanghai, China
| | - Mitko Dimitrov
- the Brain Mind Institute and School of Life Sciences, Swiss Federal Institute of Technology (EPFL), CH-1015 Lausanne, Switzerland
| | - Guillermo M Garcia Osuna
- the Brain Mind Institute and School of Life Sciences, Swiss Federal Institute of Technology (EPFL), CH-1015 Lausanne, Switzerland
| | - Patrick C Fraering
- From the Foundation Eclosion, CH-1228 Plan-Les-Ouates, and Campus Biotech Innovation Park, CH-1202 Geneva, Switzerland, .,the Brain Mind Institute and School of Life Sciences, Swiss Federal Institute of Technology (EPFL), CH-1015 Lausanne, Switzerland
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39
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Butterfield CN, Tebo BM. Substrate specificity and copper loading of the manganese-oxidizing multicopper oxidase Mnx from Bacillus sp. PL-12. Metallomics 2017; 9:183-191. [DOI: 10.1039/c6mt00239k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Akter M, Inoue C, Komori H, Matsuda N, Sakurai T, Kataoka K, Higuchi Y, Shibata N. Biochemical, spectroscopic and X-ray structural analysis of deuterated multicopper oxidase CueO prepared from a new expression construct for neutron crystallography. Acta Crystallogr F Struct Biol Commun 2016; 72:788-794. [PMID: 27710945 PMCID: PMC5053165 DOI: 10.1107/s2053230x1601400x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 09/02/2016] [Indexed: 11/11/2022] Open
Abstract
Multicopper oxidases oxidize various phenolic and nonphenolic compounds by using molecular oxygen as an electron acceptor to produce water. A multicopper oxidase protein, CueO, from Escherichia coli is involved in copper homeostasis in the bacterial cell. Although X-ray crystallographic studies have been conducted, the reduction mechanism of oxygen and the proton-transfer pathway remain unclear owing to the difficulty in identifying H atoms from X-ray diffraction data alone. To elucidate the reaction mechanism using neutron crystallography, a preparation system for obtaining large, high-quality single crystals of deuterated CueO was developed. Tiny crystals were obtained from the deuterated CueO initially prepared from the original construct. The X-ray crystal structure of the deuterated CueO showed that the protein contained an incompletely truncated signal sequence at the N-terminus, which resulted in the heterogeneity of the protein sample for crystallization. Here, a new CueO expression system that had an HRV3C cleavage site just after the signal sequence was constructed. Deuterated CueO from the new construct was expressed in cells cultured in deuterated algae-extract medium and the signal sequence was completely eliminated by HRV3C protease. The deuteration level of the purified protein was estimated by MALDI-TOF mass spectrometry to be at least 83.2% compared with nondeuterated protein. Nondeuterated CueO crystallized in space group P21, with unit-cell parameters a = 49.51, b = 88.79, c = 53.95 Å, β = 94.24°, and deuterated CueO crystallized in space group P212121, with unit-cell parameters a = 49.91, b = 106.92, c = 262.89 Å. The crystallographic parameters for the crystals of the new construct were different from those previously reported for nondeuterated crystals. The nondeuterated and deuterated CueO from the new construct had similar UV-Vis spectra, enzymatic activities and overall structure and geometry of the ligands of the Cu atoms in the active site to those of previously reported CueO structures. These results indicate that the CueO protein prepared using the new construct is suitable for further neutron diffraction studies.
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Affiliation(s)
- Mahfuza Akter
- Department of Life Science, Graduate School of Life Science, University of Hyogo, 3-2-1 Koto, Kamigori, Ako-gun, Hyogo 678-1297, Japan
| | - Chika Inoue
- Department of Life Science, Graduate School of Life Science, University of Hyogo, 3-2-1 Koto, Kamigori, Ako-gun, Hyogo 678-1297, Japan
| | - Hirofumi Komori
- Faculty of Education, Kagawa University, 1-1 Saiwai-cho, Takamatsu, Kagawa 760-8522, Japan
| | - Nana Matsuda
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan
| | - Takeshi Sakurai
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan
| | - Kunishige Kataoka
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan
| | - Yoshiki Higuchi
- Department of Life Science, Graduate School of Life Science, University of Hyogo, 3-2-1 Koto, Kamigori, Ako-gun, Hyogo 678-1297, Japan
- RIKEN SPring-8 Center, 1-1-1 Koto, Sayo-cho, Hyogo 679-5148, Japan
| | - Naoki Shibata
- Department of Life Science, Graduate School of Life Science, University of Hyogo, 3-2-1 Koto, Kamigori, Ako-gun, Hyogo 678-1297, Japan
- RIKEN SPring-8 Center, 1-1-1 Koto, Sayo-cho, Hyogo 679-5148, Japan
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41
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Stolle P, Hou B, Brüser T. The Tat Substrate CueO Is Transported in an Incomplete Folding State. J Biol Chem 2016; 291:13520-8. [PMID: 27129241 DOI: 10.1074/jbc.m116.729103] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Indexed: 11/06/2022] Open
Abstract
In Escherichia coli, cytoplasmic copper ions are toxic to cells even at the lowest concentrations. As a defense strategy, the cuprous oxidase CueO is secreted into the periplasm to oxidize the more membrane-permeable and toxic Cu(I) before it can enter the cytoplasm. CueO itself is a multicopper oxidase that requires copper for activity. Because it is transported by the twin-arginine translocation (Tat) pathway, which transports folded proteins, a requirement for cofactor assembly before translocation has been discussed. Here we show that CueO is transported as an apo-protein. Periplasmic CueO was readily activated by the addition of copper ions in vitro or under copper stress conditions in vivo Cytoplasmic CueO did not contain copper, even under copper stress conditions. In vitro Tat transport proved that the cofactor assembly was not required for functional Tat transport of CueO. Due to the post-translocational activation of CueO, this enzyme contributes to copper resistance not only by its cuprous oxidase activity but also by chelation of copper ions before they can enter the cytoplasm. Apo-CueO was indistinguishable from holo-CueO in terms of secondary structural elements. Importantly, the binding of copper to apo-CueO greatly stabilized the protein, indicating a transformation from an open or flexible domain arrangement with accessible copper sites to a closed structure with deeply buried copper ions. CueO is thus the first example for a natural Tat substrate of such incomplete folding state. The Tat system may need to transport flexibly folded proteins in any case when cofactor assembly or quaternary structure formation occurs after transport.
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Affiliation(s)
- Patrick Stolle
- From the Institute of Microbiology, Leibniz Universität Hannover, Herrenhäuser Strasse 2, 30419 Hannover, Germany
| | - Bo Hou
- From the Institute of Microbiology, Leibniz Universität Hannover, Herrenhäuser Strasse 2, 30419 Hannover, Germany
| | - Thomas Brüser
- From the Institute of Microbiology, Leibniz Universität Hannover, Herrenhäuser Strasse 2, 30419 Hannover, Germany
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42
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Safary A, Moniri R, Hamzeh-Mivehroud M, Dastmalchi S. A strategy for soluble overexpression and biochemical characterization of halo-thermotolerant Bacillus laccase in modified E. coli. J Biotechnol 2016; 227:56-63. [PMID: 27059481 DOI: 10.1016/j.jbiotec.2016.04.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 03/30/2016] [Accepted: 04/05/2016] [Indexed: 02/06/2023]
Abstract
An efficient method was introduced for soluble expression of recombinant laccase (rpCotA(SL-1)) from a newly isolated halo-thermotolerant Bacillus sp. SL-1 in modified Escherichia coli, trxB2/gor2 mutant (Origami™ B (DE3)). The yield of purified soluble laccase in Origami strain under micro-aerobic condition was ∼20mg/L of bacterial culture, showing significant improvement over the laccase produced in E.coli BL21 strain under aerobic condition. The specific activity of 13U/mg for purified laccase produced in micro-aerobic condition was higher than that of 1.07U/mg observed for the purified enzyme obtained in aerobic condition in Origami. The kinetic Km and kcat parameters for laccase-induced oxidation reactions were 46μM and 23s(-1) for ABTS (2,2'-Azino-bis(3-ethylbenzthiazoline-6-sulphonic acid), and 19.6μM and 24s(-1) for SGZ (syringaldazine) substrates, respectively. The rpCotA(SL-1) displayed thermostability at 70°C and tolerance to specified concentrations of NaCl, NaN3, EDTA and SDS as inhibitors. The enzyme was relatively stable in the presence of different concentration of organic solvents, however the residual activity was adversely affected as the dipole moment of the solvents increase. Here we successfully report the production of soluble and functional laccase in Origami at the expression level suitable for industrial application.
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Affiliation(s)
- Azam Safary
- Anatomical Sciences Research Center, Kashan University of Medical Sciences, Kashan, Iran; Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Rezvan Moniri
- Anatomical Sciences Research Center, Kashan University of Medical Sciences, Kashan, Iran; Department of Microbiology and Immunology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran.
| | - Maryam Hamzeh-Mivehroud
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; School of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Siavoush Dastmalchi
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; School of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
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43
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Liu Z, Xie T, Zhong Q, Wang G. Crystal structure of CotA laccase complexed with 2,2-azinobis-(3-ethylbenzothiazoline-6-sulfonate) at a novel binding site. Acta Crystallogr F Struct Biol Commun 2016; 72:328-35. [PMID: 27050268 PMCID: PMC4822991 DOI: 10.1107/s2053230x1600426x] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Accepted: 03/13/2016] [Indexed: 01/13/2023] Open
Abstract
The CotA laccase from Bacillus subtilis is an abundant component of the spore outer coat and has been characterized as a typical laccase. The crystal structure of CotA complexed with 2,2-azinobis-(3-ethylbenzothiazoline-6-sulfonate) (ABTS) in a hole motif has been solved. The novel binding site was about 26 Å away from the T1 binding pocket. Comparison with known structures of other laccases revealed that the hole is a specific feature of CotA. The key residues Arg476 and Ser360 were directly bound to ABTS. Site-directed mutagenesis studies revealed that the residues Arg146, Arg429 and Arg476, which are located at the bottom of the novel binding site, are essential for the oxidation of ABTS and syringaldazine. Specially, a Thr480Phe variant was identified to be almost 3.5 times more specific for ABTS than for syringaldazine compared with the wild type. These results suggest this novel binding site for ABTS could be a potential target for protein engineering of CotA laccases.
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Affiliation(s)
- Zhongchuan Liu
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People’s Republic of China
- Key Laboratory of Environmental Microbiology of Sichuan Province, Chengdu 610041, People’s Republic of China
| | - Tian Xie
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People’s Republic of China
- Key Laboratory of Environmental Microbiology of Sichuan Province, Chengdu 610041, People’s Republic of China
| | - Qiuping Zhong
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People’s Republic of China
- Key Laboratory of Environmental Microbiology of Sichuan Province, Chengdu 610041, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Ganggang Wang
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People’s Republic of China
- Key Laboratory of Environmental Microbiology of Sichuan Province, Chengdu 610041, People’s Republic of China
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44
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Zeng J, Zhu Q, Wu Y, Lin X. Oxidation of polycyclic aromatic hydrocarbons using Bacillus subtilis CotA with high laccase activity and copper independence. CHEMOSPHERE 2016; 148:1-7. [PMID: 26784443 DOI: 10.1016/j.chemosphere.2016.01.019] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Revised: 12/26/2015] [Accepted: 01/06/2016] [Indexed: 06/05/2023]
Abstract
Bacterial laccase CueO from Escherichia coli can oxidize polycyclic aromatic hydrocarbons (PAHs); however, its application in the remediation of PAH-contaminated soil mainly suffers from a low oxidation rate and copper dependence. It was reported that a laccase with a higher redox potential tended to have a higher oxidation rate; thus, the present study investigated the oxidation of PAHs using another bacterial laccase CotA from Bacillus subtilis with a higher redox potential (525 mV) than CueO (440 mV). Recombinant CotA was overexpressed in E. coli and partially purified, exhibiting a higher laccase-specific activity than CueO over a broad pH and temperature range. CotA exhibited moderate thermostability at high temperatures. CotA oxidized PAHs in the absence of exogenous copper. Thereby, secondary heavy metal pollution can be avoided, another advantage of CotA over CueO. Moreover, this study also evaluated some unexplained phenomena in our previous study. It was observed that the oxidation of PAHs with bacterial laccases can be promoted by copper. The partially purified bacterial laccase oxidized only two of the 15 tested PAHs, i.e., anthracene and benzo[a]pyrene, indicating the presence of natural redox mediators in crude cell extracts. Overall, the recombinant CotA oxidizes PAHs with high laccase activity and copper independence, indicating that CotA is a better candidate for the remediation of PAHs than CueO. Besides, the findings here provide a better understanding of the oxidation of PAHs using bacterial laccases.
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Affiliation(s)
- Jun Zeng
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, No. 71, Beijing East Road, Nanjing 210008, PR China; Joint Open Laboratory of Soil and the Environment, Hong Kong Baptist University and Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China
| | - Qinghe Zhu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, No. 71, Beijing East Road, Nanjing 210008, PR China; Joint Open Laboratory of Soil and the Environment, Hong Kong Baptist University and Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China
| | - Yucheng Wu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, No. 71, Beijing East Road, Nanjing 210008, PR China; Joint Open Laboratory of Soil and the Environment, Hong Kong Baptist University and Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China
| | - Xiangui Lin
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, No. 71, Beijing East Road, Nanjing 210008, PR China; Joint Open Laboratory of Soil and the Environment, Hong Kong Baptist University and Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China.
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45
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Serrano-Posada H, Centeno-Leija S, Rojas-Trejo SP, Rodríguez-Almazán C, Stojanoff V, Rudiño-Piñera E. X-ray-induced catalytic active-site reduction of a multicopper oxidase: structural insights into the proton-relay mechanism and O2-reduction states. ACTA CRYSTALLOGRAPHICA. SECTION D, BIOLOGICAL CRYSTALLOGRAPHY 2015; 71:2396-411. [PMID: 26627648 PMCID: PMC4934174 DOI: 10.1107/s1399004715018714] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 10/05/2015] [Indexed: 12/14/2022]
Abstract
During X-ray data collection from a multicopper oxidase (MCO) crystal, electrons and protons are mainly released into the system by the radiolysis of water molecules, leading to the X-ray-induced reduction of O2 to 2H2O at the trinuclear copper cluster (TNC) of the enzyme. In this work, 12 crystallographic structures of Thermus thermophilus HB27 multicopper oxidase (Tth-MCO) in holo, apo and Hg-bound forms and with different X-ray absorbed doses have been determined. In holo Tth-MCO structures with four Cu atoms, the proton-donor residue Glu451 involved in O2 reduction was found in a double conformation: Glu451a (∼7 Å from the TNC) and Glu451b (∼4.5 Å from the TNC). A positive peak of electron density above 3.5σ in an Fo - Fc map for Glu451a O(ℇ2) indicates the presence of a carboxyl functional group at the side chain, while its significant absence in Glu451b strongly suggests a carboxylate functional group. In contrast, for apo Tth-MCO and in Hg-bound structures neither the positive peak nor double conformations were observed. Together, these observations provide the first structural evidence for a proton-relay mechanism in the MCO family and also support previous studies indicating that Asp106 does not provide protons for this mechanism. In addition, eight composite structures (Tth-MCO-C1-8) with different X-ray-absorbed doses allowed the observation of different O2-reduction states, and a total depletion of T2Cu at doses higher than 0.2 MGy showed the high susceptibility of this Cu atom to radiation damage, highlighting the importance of taking radiation effects into account in biochemical interpretations of an MCO structure.
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Affiliation(s)
- Hugo Serrano-Posada
- Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, 62210 Cuernavaca, MOR, Mexico
- Departamento de Biología Molecular y Biotecnología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 México, DF, Mexico
| | - Sara Centeno-Leija
- Departamento de Biología Molecular y Biotecnología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 México, DF, Mexico
| | - Sonia Patricia Rojas-Trejo
- Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, 62210 Cuernavaca, MOR, Mexico
| | - Claudia Rodríguez-Almazán
- Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, 62210 Cuernavaca, MOR, Mexico
| | - Vivian Stojanoff
- NSLS, Brookhaven National Laboratory, 75 Brookhaven Avenue, Building 725D, Upton, NY 11973-5000, USA
| | - Enrique Rudiño-Piñera
- Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, 62210 Cuernavaca, MOR, Mexico
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46
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Brissos V, Ferreira M, Grass G, Martins LO. Turning a Hyperthermostable Metallo-Oxidase into a Laccase by Directed Evolution. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00771] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Vânia Brissos
- Instituto
de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av da República, 2780-157 Oeiras, Portugal
| | - Maura Ferreira
- Instituto
de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av da República, 2780-157 Oeiras, Portugal
| | - Gregor Grass
- Bundeswehr
Institute of Microbiology, DZIF, Partner Site of German Center for Infection Research, Neuherbergstrasse 11, Munich DE 80937, Germany
| | - Lígia O. Martins
- Instituto
de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Av da República, 2780-157 Oeiras, Portugal
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47
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Zhang Z, Zhang Z, Chen H, Liu J, Liu C, Ni H, Zhao C, Ali M, Liu F, Li L. Surface Mn(II) oxidation actuated by a multicopper oxidase in a soil bacterium leads to the formation of manganese oxide minerals. Sci Rep 2015; 5:10895. [PMID: 26039669 PMCID: PMC4454072 DOI: 10.1038/srep10895] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Accepted: 04/30/2015] [Indexed: 11/22/2022] Open
Abstract
In this manuscript, we report that a bacterial multicopper oxidase (MCO266) catalyzes Mn(II) oxidation on the cell surface, resulting in the surface deposition of Mn(III) and Mn(IV) oxides and the gradual formation of bulky oxide aggregates. These aggregates serve as nucleation centers for the formation of Mn oxide micronodules and Mn-rich sediments. A soil-borne Escherichia coli with high Mn(II)-oxidizing activity formed Mn(III)/Mn(IV) oxide deposit layers and aggregates under laboratory culture conditions. We engineered MCO266 onto the cell surfaces of both an activity-negative recipient and wild-type strains. The results confirmed that MCO266 governs Mn(II) oxidation and initiates the formation of deposits and aggregates. By contrast, a cell-free substrate, heat-killed strains, and intracellularly expressed or purified MCO266 failed to catalyze Mn(II) oxidation. However, purified MCO266 exhibited Mn(II)-oxidizing activity when combined with cell outer membrane component (COMC) fractions in vitro. We demonstrated that Mn(II) oxidation and aggregate formation occurred through an oxygen-dependent biotic transformation process that requires a certain minimum Mn(II) concentration. We propose an approximate electron transfer pathway in which MCO266 transfers only one electron to convert Mn(II) to Mn(III) and then cooperates with other COMC electron transporters to transfer the other electron required to oxidize Mn(III) to Mn(IV).
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Affiliation(s)
- Zhen Zhang
- 1] State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China [2] Key Laboratory of Subtropical Agricultural Resource and Environment, Ministry of Agriculture, Huazhong Agricultural University, Wuhan 430070, China
| | - Zhongming Zhang
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
| | - Hong Chen
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
| | - Jin Liu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
| | - Chang Liu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
| | - Hong Ni
- School of Life Science, Hubei University, Wuhan 430062, China
| | - Changsong Zhao
- Key Laboratory of Subtropical Agricultural Resource and Environment, Ministry of Agriculture, Huazhong Agricultural University, Wuhan 430070, China
| | - Muhammad Ali
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
| | - Fan Liu
- Key Laboratory of Subtropical Agricultural Resource and Environment, Ministry of Agriculture, Huazhong Agricultural University, Wuhan 430070, China
| | - Lin Li
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
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48
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Hakulinen N, Rouvinen J. Three-dimensional structures of laccases. Cell Mol Life Sci 2015; 72:857-68. [PMID: 25586561 PMCID: PMC11113281 DOI: 10.1007/s00018-014-1827-5] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Accepted: 12/30/2014] [Indexed: 10/24/2022]
Abstract
Laccases are phenol oxidases that belong to the family of multi-copper oxidases and the superfamily of cupredoxins. A number of potential industrial applications for laccases have led to intensive structure-function studies and an increased amount of crystal structures has been solved. The objective of this review is to summarize and analyze available crystal structures of laccases. The experimental crystallographic data are now easily available from the websites and electron density maps can be used for the interpretation of the structural models. The crystal structures can give valuable insights into the functional mechanisms and may serve as the basis for the development of laccases for industrial applications.
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Affiliation(s)
- N Hakulinen
- Department of Chemistry, University of Eastern Finland, Joensuu Campus, PO Box 111, 80101, Joensuu, Finland,
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49
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Martins LO, Durão P, Brissos V, Lindley PF. Laccases of prokaryotic origin: enzymes at the interface of protein science and protein technology. Cell Mol Life Sci 2015; 72:911-22. [PMID: 25572294 PMCID: PMC11113980 DOI: 10.1007/s00018-014-1822-x] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Accepted: 12/30/2014] [Indexed: 10/24/2022]
Abstract
The ubiquitous members of the multicopper oxidase family of enzymes oxidize a range of aromatic substrates such as polyphenols, methoxy-substituted phenols, amines and inorganic compounds, concomitantly with the reduction of molecular dioxygen to water. This family of enzymes can be broadly divided into two functional classes: metalloxidases and laccases. Several prokaryotic metalloxidases have been described in the last decade showing a robust activity towards metals, such as Cu(I), Fe(II) or Mn(II) and have been implicated in the metal metabolism of the corresponding microorganisms. Many laccases, with a superior efficiency for oxidation of organic compounds when compared with metals, have also been identified and characterized from prokaryotes, playing roles that more closely conform to those of intermediary metabolism. This review aims to present an update of current knowledge on prokaryotic multicopper oxidases, with a special emphasis on laccases, anticipating their enormous potential for industrial and environmental applications.
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Affiliation(s)
- Lígia O Martins
- Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. da República, 2781-901, Oeiras, Portugal,
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50
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Wijekoon CJK, Young TR, Wedd AG, Xiao Z. CopC Protein from Pseudomonas fluorescens SBW25 Features a Conserved Novel High-Affinity Cu(II) Binding Site. Inorg Chem 2015; 54:2950-9. [DOI: 10.1021/acs.inorgchem.5b00031] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Chathuri J. K. Wijekoon
- School
of Chemistry and Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Tessa R. Young
- School
of Chemistry and Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Anthony G. Wedd
- School
of Chemistry and Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Zhiguang Xiao
- School
of Chemistry and Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Victoria 3010, Australia
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