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Elliott PR, Leske D, Wagstaff J, Schlicher L, Berridge G, Maslen S, Timmermann F, Ma B, Fischer R, Freund SMV, Komander D, Gyrd-Hansen M. Regulation of CYLD activity and specificity by phosphorylation and ubiquitin-binding CAP-Gly domains. Cell Rep 2021; 37:109777. [PMID: 34610306 PMCID: PMC8511506 DOI: 10.1016/j.celrep.2021.109777] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 08/25/2021] [Accepted: 09/09/2021] [Indexed: 12/24/2022] Open
Abstract
Non-degradative ubiquitin chains and phosphorylation events govern signaling responses by innate immune receptors. The deubiquitinase CYLD in complex with SPATA2 is recruited to receptor signaling complexes by the ubiquitin ligase LUBAC and regulates Met1- and Lys63-linked polyubiquitin and receptor signaling outcomes. Here, we investigate the molecular determinants of CYLD activity. We reveal that two CAP-Gly domains in CYLD are ubiquitin-binding domains and demonstrate a requirement of CAP-Gly3 for CYLD activity and regulation of immune receptor signaling. Moreover, we identify a phosphorylation switch outside of the catalytic USP domain, which activates CYLD toward Lys63-linked polyubiquitin. The phosphorylated residue Ser568 is a novel tumor necrosis factor (TNF)-regulated phosphorylation site in CYLD and works in concert with Ser418 to enable CYLD-mediated deubiquitination and immune receptor signaling. We propose that phosphorylated CYLD, together with SPATA2 and LUBAC, functions as a ubiquitin-editing complex that balances Lys63- and Met1-linked polyubiquitin at receptor signaling complexes to promote LUBAC signaling.
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Affiliation(s)
- Paul R Elliott
- Division of Protein and Nucleic Acid Chemistry, MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, UK; Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK.
| | - Derek Leske
- Ludwig Institute for Cancer Research, University of Oxford, Old Road Campus Research Building, Off-Roosevelt Drive, Oxford OX3 7DQ, UK
| | - Jane Wagstaff
- Division of Protein and Nucleic Acid Chemistry, MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, UK
| | - Lisa Schlicher
- Ludwig Institute for Cancer Research, University of Oxford, Old Road Campus Research Building, Off-Roosevelt Drive, Oxford OX3 7DQ, UK
| | - Georgina Berridge
- TDI Mass Spectrometry Laboratory, Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford OX3 7FZ, UK
| | - Sarah Maslen
- Division of Protein and Nucleic Acid Chemistry, MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, UK
| | - Frederik Timmermann
- Ludwig Institute for Cancer Research, University of Oxford, Old Road Campus Research Building, Off-Roosevelt Drive, Oxford OX3 7DQ, UK
| | - Biao Ma
- Ludwig Institute for Cancer Research, University of Oxford, Old Road Campus Research Building, Off-Roosevelt Drive, Oxford OX3 7DQ, UK
| | - Roman Fischer
- TDI Mass Spectrometry Laboratory, Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford OX3 7FZ, UK
| | - Stefan M V Freund
- Division of Protein and Nucleic Acid Chemistry, MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, UK
| | - David Komander
- Division of Protein and Nucleic Acid Chemistry, MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, UK; The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville VIC 3052, Australia; Department for Medical Biology, University of Melbourne, Melbourne VIC 3000, Australia.
| | - Mads Gyrd-Hansen
- Ludwig Institute for Cancer Research, University of Oxford, Old Road Campus Research Building, Off-Roosevelt Drive, Oxford OX3 7DQ, UK; LEO Foundation Skin Immunology Research Center, Department of Immunology and Microbiology, University of Copenhagen, Maersk Tower, Blegdamsvej 3B, 2200 Copenhagen, Denmark.
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2
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Yang Y, Li H, Zhao H, Qu R, Zhang S, Hu W, Yu X, Zhu X, Liu S, Zheng C, Gao X. Structure and crystal phase transition effect of Sn doping on anatase TiO 2 for dichloromethane decomposition. JOURNAL OF HAZARDOUS MATERIALS 2019; 371:156-164. [PMID: 30849570 DOI: 10.1016/j.jhazmat.2019.02.103] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 01/22/2019] [Accepted: 02/27/2019] [Indexed: 06/09/2023]
Abstract
Efficient removal of chlorinated volatile organic compounds (CVOCs) has received great attention because of the considerable harm that they cause to the environment and to human health. Developing novel catalysts and exploring the catalytic activation and deconstruction mechanism of CVOCs molecule are always the focus in this field. Here, a set of Sn doped TiO2 catalysts were investigated for the decomposition of dichloromethane (DCM). Rietveld refinement of the XRD patterns showed that Sn ions can uniformly disperse into TiO2 and induce the crystal transition of anatase. Meanwhile, such decorating can induce an increase in specific surface area and affect the surface oxygen vacancy concentration of these samples, which have been demonstrated by N2 adsorption and XPS, respectively. Catalytic performance tests indicated that the Sn0.2Ti0.8O2 has the best activity for DCM decomposition, and a lower CH3Cl selectivity than that of pure TiO2. Computational results suggested the dominant surface (110) of rutile Sn0.2Ti0.8O2 is more beneficial for the adsorption/dissociation of DCM molecule than that of anatase TiO2 (101). That's because the anchoring of DCM to Sn sites and electron enrichment on the surface bridge oxygen atoms of rutile Sn0.2Ti0.8O2 (110) can promote the nucleophilic substitution process for breaking of CCl bonds.
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Affiliation(s)
- Yang Yang
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Hao Li
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Haitao Zhao
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Ruiyang Qu
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Shuo Zhang
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Wenshuo Hu
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Xinning Yu
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Xinbo Zhu
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Shaojun Liu
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China; School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang, 212003, China.
| | - Chenghang Zheng
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Xiang Gao
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China.
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3
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Ângelo J, Magalhães P, Andrade L, Madeira LM, Mendes A. Optimization of the NO photooxidation and the role of relative humidity. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 240:541-548. [PMID: 29758528 DOI: 10.1016/j.envpol.2018.04.051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Revised: 03/31/2018] [Accepted: 04/10/2018] [Indexed: 06/08/2023]
Abstract
Photocatalysis was recognised as a suitable process for the photoabatement of atmospheric pollutants. The photooxidation mechanism on TiO2 has been widely studied. However, recent studies demonstrated that the very often-assumed photooxidation intermediated by the hydroxyl radical cannot explain all the experimental observations. Indeed, this study contributes for a new understanding of NO photooxidation. First, the adsorption equilibrium isotherms of NO, NO2 and H2O on the photocatalyst, Aeroxide® P25 from Evonik Industries, were obtained. Also, the concentration of hydroxyl radicals was determined by photoluminescence. A comprehensive design of experiments was then followed; NO conversion and selectivity were obtained as a function of the relative humidity, irradiance, NO inlet concentration and residence time, following a response surface methodology (RSM). These results were then used to discuss the photooxidation mechanism of NO.
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Affiliation(s)
- Joana Ângelo
- LEPABE - Faculdade de Engenharia, Universidade do Porto, rua Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - Pedro Magalhães
- LEPABE - Faculdade de Engenharia, Universidade do Porto, rua Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - Luísa Andrade
- LEPABE - Faculdade de Engenharia, Universidade do Porto, rua Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - Luís M Madeira
- LEPABE - Faculdade de Engenharia, Universidade do Porto, rua Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - Adélio Mendes
- LEPABE - Faculdade de Engenharia, Universidade do Porto, rua Dr. Roberto Frias, 4200-465, Porto, Portugal.
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4
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Montoya JF, Bahnemann DW, Salvador P, Peral J. Catalytic role of bridging oxygens in TiO2 liquid phase photocatalytic reactions: analysis of H216O photooxidation on labeled Ti18O2. Catal Sci Technol 2017. [DOI: 10.1039/c6cy02457b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
TiO2 surface lattice oxygens are actively involved in the photocatalytic oxidation of water as demonstrated by isotopic tracing experiments with Ti18O2.
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Affiliation(s)
- J. F. Montoya
- Centro de Investigación
- Innovación y Desarrollo de Materiales − CIDEMAT
- Universidad de Antioquia UdeA
- Medellín
- Colombia
| | - D. W. Bahnemann
- Institut für Technische Chemie
- Leibniz Universität Hannover
- Hannover
- Germany
| | - P. Salvador
- Departamento de Química
- Universidad Autónoma de Barcelona
- Spain
| | - J. Peral
- Departamento de Química
- Universidad Autónoma de Barcelona
- Spain
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5
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Sobolev VI, Koltunov KY. Gas-phase Oxidation of Alcohols with O2 and N2O Catalyzed by Au/TiO2: A Comparative Study. Catal Letters 2014. [DOI: 10.1007/s10562-014-1430-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Unraveling the photocatalytic mechanisms on TiO2 surfaces using the oxygen-18 isotopic label technique. Molecules 2014; 19:16291-311. [PMID: 25310153 PMCID: PMC6271656 DOI: 10.3390/molecules191016291] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 09/24/2014] [Accepted: 10/06/2014] [Indexed: 11/22/2022] Open
Abstract
During the last several decades TiO2 photocatalytic oxidation using the molecular oxygen in air has emerged as a promising method for the degradation of recalcitrant organic pollutants and selective transformations of valuable organic chemicals. Despite extensive studies, the mechanisms of these photocatalytic reactions are still poorly understood due to their complexity. In this review, we will highlight how the oxygen-18 isotope labeling technique can be a powerful tool to elucidate complicated photocatalytic mechanisms taking place on the TiO2 surface. To this end, the application of the oxygen-18 isotopic-labeling method to three representative photocatalytic reactions is discussed: (1) the photocatalytic hydroxylation of aromatics; (2) oxidative cleavage of aryl rings on the TiO2 surface; and (3) photocatalytic decarboxylation of saturated carboxylic acids. The results show that the oxygen atoms of molecular oxygen can incorporate into the corresponding products in aqueous solution in all three of these reactions, but the detailed incorporation pathways are completely different in each case. For the hydroxylation process, the O atom in O2 is shown to be incorporated through activation of O2 by conduction band electrons. In the cleavage of aryl rings, O atoms are inserted into the aryl ring through the site-dependent coordination of reactants on the TiO2 surface. A new pathway for the decarboxylation of saturated carboxylic acids with pyruvic acid as an intermediate is identified, and the O2 is incorporated into the products through the further oxidation of pyruvic acid by active species from the activation of O2 by conduction band electrons.
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7
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Montoya JF, Bahnemann DW, Peral J, Salvador P. Catalytic role of TiO(2) terminal oxygen atoms in liquid-phase photocatalytic reactions: oxidation of aromatic compounds in anhydrous acetonitrile. Chemphyschem 2014; 15:2311-20. [PMID: 24827557 DOI: 10.1002/cphc.201402043] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 03/28/2014] [Indexed: 11/11/2022]
Abstract
On the basis of experiments carried out with controlled amounts of residual oxygen and water, or by using oxygen-isotope-labeled Ti(18) O2 as the photocatalyst, we demonstrate that (18) Os atoms behave as real catalytic species in the photo-oxidation of acetonitrile-dissolved aromatic compounds such as benzene, phenol, and benzaldehyde with TiO2 . The experimental evidence allows a terminal-oxygen indirect electron-transfer (TOIET) mechanism to be proposed, which is a new pathway that involves the trapping of free photogenerated valence-band holes at Os species and their incorporation into the reaction products, with simultaneous generation of oxygen vacancies at the TiO2 surface and their subsequent healing with oxygen atoms from either O2 or H2 O molecules that are dissolved in the liquid phase. According to the TOIET mechanism, the TiO2 surface is not considered to remain stable, but is continuously changing in the course of the photocatalytic reaction, challenging earlier interpretations of TiO2 photocatalytic phenomena.
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Affiliation(s)
- Juan F Montoya
- Departamento de Química, Universidad Autónoma de Barcelona, 08193, Cerdanyola del Vallés (Spain)
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8
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Sobolev VI, Koltunov KY. Gas phase epoxidation of propylene with CO/O2 mixture on Au/TiO2. CATAL COMMUN 2013. [DOI: 10.1016/j.catcom.2013.06.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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9
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Montoya JF, Ivanova I, Dillert R, Bahnemann DW, Salvador P, Peral J. Catalytic Role of Surface Oxygens in TiO2 Photooxidation Reactions: Aqueous Benzene Photooxidation with Ti(18)O2 under Anaerobic Conditions. J Phys Chem Lett 2013; 4:1415-1422. [PMID: 26282293 DOI: 10.1021/jz400580b] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Affiliation(s)
- Juan Felipe Montoya
- †Departamento de Quı́mica, Universidad Autónoma de Barcelona, 08193 Cerdanyola del Vallés, Spain
| | - Irina Ivanova
- ‡Institut für Technische Chemie, Leibniz Universität Hannover, Callinstrasse 3, D-30167 Hannover, Germany
| | - Ralf Dillert
- ‡Institut für Technische Chemie, Leibniz Universität Hannover, Callinstrasse 3, D-30167 Hannover, Germany
| | - Detlef W Bahnemann
- ‡Institut für Technische Chemie, Leibniz Universität Hannover, Callinstrasse 3, D-30167 Hannover, Germany
| | - Pedro Salvador
- †Departamento de Quı́mica, Universidad Autónoma de Barcelona, 08193 Cerdanyola del Vallés, Spain
| | - José Peral
- †Departamento de Quı́mica, Universidad Autónoma de Barcelona, 08193 Cerdanyola del Vallés, Spain
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10
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Choi J, Kang D, Lee KH, Lee B, Kim KJ, Hur NH. Evidence for light-induced oxygen exchange in the oxidation of liquid hydrocarbons on oxygen 18-labelled titanium dioxide. RSC Adv 2013. [DOI: 10.1039/c3ra40460a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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11
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Klahr B, Gimenez S, Fabregat-Santiago F, Hamann T, Bisquert J. Water Oxidation at Hematite Photoelectrodes: The Role of Surface States. J Am Chem Soc 2012; 134:4294-302. [DOI: 10.1021/ja210755h] [Citation(s) in RCA: 745] [Impact Index Per Article: 62.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Benjamin Klahr
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824-1322,
United States
| | - Sixto Gimenez
- Photovoltaics and Optoelectronic
Devices Group, Departament de Física, Universitat Jaume I, 12071 Castelló, Spain
| | - Francisco Fabregat-Santiago
- Photovoltaics and Optoelectronic
Devices Group, Departament de Física, Universitat Jaume I, 12071 Castelló, Spain
| | - Thomas Hamann
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824-1322,
United States
| | - Juan Bisquert
- Photovoltaics and Optoelectronic
Devices Group, Departament de Física, Universitat Jaume I, 12071 Castelló, Spain
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12
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Ahmed AY, Oekermann T, Lindner P, Bahnemann D. Comparison of the photoelectrochemical oxidation of methanol on rutile TiO2 (001) and (100) single crystal faces studied by intensity modulated photocurrent spectroscopy. Phys Chem Chem Phys 2012; 14:2774-83. [DOI: 10.1039/c2cp23416e] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Sobolev VI, Simakova OA, Koltunov KY. Generation of Reactive Oxygen Species on Au/TiO2 after Treatment with Hydrogen: Testing the Link to Ethanol Low-Temperature Oxidation. ChemCatChem 2011. [DOI: 10.1002/cctc.201100133] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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