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Morales E, Shaner SE, Stone KL. Characterizing Biogenic MnOx Produced by Pseudomonas putida MnB1 and Its Catalytic Activity towards Water Oxidation. Life (Basel) 2024; 14:171. [PMID: 38398680 PMCID: PMC10890277 DOI: 10.3390/life14020171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 01/20/2024] [Accepted: 01/22/2024] [Indexed: 02/25/2024] Open
Abstract
Mn-oxidizing microorganisms oxidize environmental Mn(II), producing Mn(IV) oxides. Pseudomonas putida MnB1 is a widely studied organism for the oxidation of manganese(II) to manganese(IV) by a multi-copper oxidase. The biogenic manganese oxides (BMOs) produced by MnB1 and similar organisms have unique properties compared to non-biological manganese oxides. Along with an amorphous, poorly crystalline structure, previous studies have indicated that BMOs have high surface areas and high reactivities. It is also known that abiotic Mn oxides promote oxidation of organics and have been studied for their water oxidation catalytic function. MnB1 was grown and maintained and subsequently transferred to culturing media containing manganese(II) salts to observe the oxidation of manganese(II) to manganese(IV). The structures and compositions of these manganese(IV) oxides were characterized using scanning electron microscopy, energy dispersive X-ray spectroscopy, inductively coupled plasma optical emission spectroscopy, and powder X-ray diffraction, and their properties were assessed regarding catalytic functionality towards water oxidation in comparison to abiotic acid birnessite. Water oxidation was accomplished through the whole-cell catalysis of MnB1, the results for which compare favorably to the water-oxidizing ability of abiotic Mn(IV) oxides.
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Affiliation(s)
- Elisa Morales
- Department of Chemistry, Lewis University, Romeoville, IL 60446, USA;
| | - Sarah E. Shaner
- Department of Chemistry and Physics, Southeast Missouri State University, Cape Girardeau, MO 63701, USA
| | - Kari L. Stone
- Department of Chemistry, Lewis University, Romeoville, IL 60446, USA;
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2
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Zhao Z, Vercellino I, Knoppová J, Sobotka R, Murray JW, Nixon PJ, Sazanov LA, Komenda J. The Ycf48 accessory factor occupies the site of the oxygen-evolving manganese cluster during photosystem II biogenesis. Nat Commun 2023; 14:4681. [PMID: 37542031 PMCID: PMC10403576 DOI: 10.1038/s41467-023-40388-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 07/26/2023] [Indexed: 08/06/2023] Open
Abstract
Robust oxygenic photosynthesis requires a suite of accessory factors to ensure efficient assembly and repair of the oxygen-evolving photosystem two (PSII) complex. The highly conserved Ycf48 assembly factor binds to the newly synthesized D1 reaction center polypeptide and promotes the initial steps of PSII assembly, but its binding site is unclear. Here we use cryo-electron microscopy to determine the structure of a cyanobacterial PSII D1/D2 reaction center assembly complex with Ycf48 attached. Ycf48, a 7-bladed beta propeller, binds to the amino-acid residues of D1 that ultimately ligate the water-oxidising Mn4CaO5 cluster, thereby preventing the premature binding of Mn2+ and Ca2+ ions and protecting the site from damage. Interactions with D2 help explain how Ycf48 promotes assembly of the D1/D2 complex. Overall, our work provides valuable insights into the early stages of PSII assembly and the structural changes that create the binding site for the Mn4CaO5 cluster.
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Affiliation(s)
- Ziyu Zhao
- Sir Ernst Chain Building-Wolfson Laboratories, Department of Life Sciences, Imperial College London, S. Kensington Campus, London, SW7 2AZ, UK
| | - Irene Vercellino
- Institute of Science and Technology Austria, 3400, Klosterneuburg, Austria
- Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Straße, 52428, Jülich, Germany
| | - Jana Knoppová
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Opatovický mlýn, Třeboň, 379 81, Czech Republic
| | - Roman Sobotka
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Opatovický mlýn, Třeboň, 379 81, Czech Republic
- Faculty of Science, University of South Bohemia, Branišovská 31, České Budĕjovice, 37005, Czech Republic
| | - James W Murray
- Sir Ernst Chain Building-Wolfson Laboratories, Department of Life Sciences, Imperial College London, S. Kensington Campus, London, SW7 2AZ, UK
| | - Peter J Nixon
- Sir Ernst Chain Building-Wolfson Laboratories, Department of Life Sciences, Imperial College London, S. Kensington Campus, London, SW7 2AZ, UK.
| | - Leonid A Sazanov
- Institute of Science and Technology Austria, 3400, Klosterneuburg, Austria.
| | - Josef Komenda
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Opatovický mlýn, Třeboň, 379 81, Czech Republic.
- Faculty of Science, University of South Bohemia, Branišovská 31, České Budĕjovice, 37005, Czech Republic.
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3
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Huang Y, Huangfu X, Ma C, Liu Z. Sequestration and oxidation of heavy metals mediated by Mn(II) oxidizing microorganisms in the aquatic environment. CHEMOSPHERE 2023; 329:138594. [PMID: 37030347 DOI: 10.1016/j.chemosphere.2023.138594] [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: 02/14/2023] [Revised: 03/30/2023] [Accepted: 04/01/2023] [Indexed: 05/03/2023]
Abstract
Microorganisms can oxidize Mn(II) to biogenic Mn oxides (BioMnOx), through enzyme-mediated processes and non-enzyme-mediated processes, which are generally considered as the source and sink of heavy metals due to highly reactive to sequestrate and oxidize heavy metals. Hence, the summary of interactions between Mn(II) oxidizing microorganisms (MnOM) and heavy metals is benefit for further work on microbial-mediated self-purification of water bodies. This review comprehensively summarizes the interactions between MnOM and heavy metals. The processes of BioMnOx production by MnOM has been firstly discussed. Moreover, the interactions between BioMnOx and various heavy metals are critically discussed. On the one hand, modes for heavy metals adsorbed on BioMnOx are summarized, such as electrostatic attraction, oxidative precipitation, ion exchange, surface complexation, and autocatalytic oxidation. On the other hand, adsorption and oxidation of representative heavy metals based on BioMnOx/Mn(II) are also discussed. Thirdly, the interactions between MnOM and heavy metals are also focused on. Finally, several perspectives which will contribute to future research are proposed. This review provides insight into the sequestration and oxidation of heavy metals mediated by Mn(II) oxidizing microorganisms. It might be helpful to understand the geochemical fate of heavy metals in the aquatic environment and the process of microbial-mediated water self-purification.
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Affiliation(s)
- Yuheng Huang
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment, and Ecology, Chongqing University, Chongqing, 400044, China
| | - Xiaoliu Huangfu
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment, and Ecology, Chongqing University, Chongqing, 400044, China.
| | - Chengxue Ma
- State Key Laboratory of Urban Water Resource, and Environment, School of Municipal, and Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, China
| | - Ziqiang Liu
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment, and Ecology, Chongqing University, Chongqing, 400044, China
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4
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Park H, Wang W, Min SH, Ren Y, Shin K, Han X. Artificial organelles for sustainable chemical energy conversion and production in artificial cells: Artificial mitochondrion and chloroplasts. BIOPHYSICS REVIEWS 2023; 4:011311. [PMID: 38510162 PMCID: PMC10903398 DOI: 10.1063/5.0131071] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 02/17/2023] [Indexed: 03/22/2024]
Abstract
Sustainable energy conversion modules are the main challenges for building complex reaction cascades in artificial cells. Recent advances in biotechnology have enabled this sustainable energy supply, especially the adenosine triphosphate (ATP), by mimicking the organelles, which are the core structures for energy conversion in living cells. Three components are mainly shared by the artificial organelles: the membrane compartment separating the inner and outer parts, membrane proteins for proton translocation, and the molecular rotary machine for ATP synthesis. Depending on the initiation factors, they are further categorized into artificial mitochondrion and artificial chloroplasts, which use chemical nutrients for oxidative phosphorylation and light for photosynthesis, respectively. In this review, we summarize the essential components needed for artificial organelles and then review the recent progress on two different artificial organelles. Recent strategies, purified and identified proteins, and working principles are discussed. With more study on the artificial mitochondrion and artificial chloroplasts, they are expected to be very powerful tools, allowing us to achieve complex cascading reactions in artificial cells, like the ones that happen in real cells.
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Affiliation(s)
- Hyun Park
- Department of Chemistry and Institute of Biological Interfaces, Sogang University, South Korea
| | - Weichen Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, China
| | - Seo Hyeon Min
- Department of Chemistry and Institute of Biological Interfaces, Sogang University, South Korea
| | - Yongshuo Ren
- State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, China
| | - Kwanwoo Shin
- Department of Chemistry and Institute of Biological Interfaces, Sogang University, South Korea
| | - Xiaojun Han
- State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, China
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5
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Espinoza‐Corral R, Schwenkert S, Schneider A. Characterization of the preferred cation cofactors of chloroplast protein kinases in Arabidopsis thaliana. FEBS Open Bio 2023; 13:511-518. [PMID: 36683405 PMCID: PMC9989932 DOI: 10.1002/2211-5463.13563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/09/2023] [Accepted: 01/20/2023] [Indexed: 01/24/2023] Open
Abstract
Chloroplasts sense a variety of stimuli triggering several acclimation responses. One prominent response is the mechanism of state transitions, which enables rapid adaption to changes in illumination. Here, we investigated the link between divalent cations (calcium, magnesium, and manganese) and protein kinase activity in Arabidopsis chloroplasts. Our results show that manganese ions are the strongest activator of kinase activity in chloroplasts followed by magnesium ions, whereas calcium ions are not able to induce kinase activity. Additionally, the phosphorylation of specific protein bands is strongly reduced in chloroplasts of a cmt1 mutant, which is impaired in manganese import into chloroplasts, as compared to the wild-type. These findings provide insights for the future characterization of chloroplast protein kinase activity and potential target proteins.
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Affiliation(s)
| | - Serena Schwenkert
- Plant Molecular Biology, Faculty of BiologyLudwig Maximilians University MunichPlaneggGermany
| | - Anja Schneider
- Plant Molecular Biology, Faculty of BiologyLudwig Maximilians University MunichPlaneggGermany
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6
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Huang L, Liu X, Rensing C, Yuan Y, Zhou S, Nealson KH. Light-independent anaerobic microbial oxidation of manganese driven by an electrosyntrophic coculture. THE ISME JOURNAL 2023; 17:163-171. [PMID: 36261509 PMCID: PMC9751303 DOI: 10.1038/s41396-022-01335-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 10/08/2022] [Accepted: 10/11/2022] [Indexed: 11/05/2022]
Abstract
Anaerobic microbial manganese oxidation (AMMO) has been considered an ancient biological metabolism for Mn element cycling on Archaean Earth before the presence of oxygen. A light-dependent AMMO was recently observed under strictly anoxic conditions, providing a new proxy for the interpretation of the evolution of oxygenic photosynthesis. However, the feasibility of biotic Mn(II) oxidation in dark geological habitats that must have been abundant remains unknown. Therefore, we discovered that it would be possible to achieve AMMO in a light-independent electrosyntrophic coculture between Rhodopseudomonas palustris and Geobacter metallireducens. Transmission electron microscopy analysis revealed insoluble particle formation in the coculture with Mn(II) addition. X-ray diffraction and X-ray photoelectron spectroscopy analysis verified that these particles were a mixture of MnO2 and Mn3O4. The absence of Mn oxides in either of the monocultures indicated that the Mn(II)-oxidizing activity was induced via electrosyntrophic interactions. Radical quenching and isotopic experiments demonstrated that hydroxyl radicals (•OH) produced from H2O dissociation by R. palustris in the coculture contributed to Mn(II) oxidation. All these findings suggest a new, symbiosis-dependent and light-independent AMMO route, with potential importance to the evolution of oxygenic photosynthesis and the biogeochemical cycling of manganese on Archaean and modern Earth.
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Affiliation(s)
- Lingyan Huang
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, China
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xing Liu
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Christopher Rensing
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yong Yuan
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, China.
| | - Shungui Zhou
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Kenneth H Nealson
- Department of Earth Science, University of Southern California, Los Angeles, CA, USA
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7
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Hou X, Hu X. Self-Assembled Nanoscale Manganese Oxides Enhance Carbon Capture by Diatoms. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:17215-17226. [PMID: 36375171 DOI: 10.1021/acs.est.2c04500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Continuous CO2 emissions from human activities increase atmospheric CO2 concentrations and affect global climate change. The carbon storage capacity of the ocean is 20-fold higher than that of the land, and diatoms contribute to approximately 40% of carbon capture in the ocean. Manganese (Mn) is a major driver of marine phytoplankton growth and the marine carbon pump. Here, we discovered self-assembled manganese oxides (MnOx) for CO2 fixation in a diatom-based biohybrid system. MnOx shared key features (e.g., di-μ-oxo-bridged Mn-Mn) with the Mn4CaO5 cluster of the biological catalyst in photosystem II and promoted photosynthesis and carbon capture by diatoms/MnOx. The CO2 capture capacity of diatoms/MnOx was 1.5-fold higher than that of diatoms alone. Diatoms/MnOx easily allocated carbon into proteins and lipids instead of carbohydrates. Metabolomics showed that the contents of several metabolites (e.g., lysine and inositol) were positively associated with increased CO2 capture. Diatoms/MnOx upregulated six genes encoding photosynthesis core proteins and a key rate-limiting enzyme (Rubisco, ribulose 1,5-bisphosphate carboxylase-oxygenase) in the Calvin-Benson-Bassham carbon assimilation cycle, revealing the link between MnOx and photosynthesis. These findings provide a route for offsetting anthropogenic CO2 emissions and inspiration for self-assembled biohybrid systems for carbon capture by marine phytoplankton.
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Affiliation(s)
- Xuan Hou
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin300350, China
| | - Xiangang Hu
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin300350, China
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8
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Song W, Song SJ, Kuang J, Yang H, Yu T, Yang F, Wan T, Xu Y, Wei ST, Li MX, Xiong Y, Zhou Y, Qiu WX. Activating Innate Immunity by a STING Signal Amplifier for Local and Systemic Immunotherapy. ACS NANO 2022; 16:15977-15993. [PMID: 36190834 DOI: 10.1021/acsnano.2c03509] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The number of patients who benefit from acquired immunotherapy is limited. Stimulator of interferon genes (STING) signal activation is a significant component to enhance innate immunity, which has been used to realize broad-spectrum immunotherapy. Here, M@P@HA nanoparticles, as a STING signal amplifier, are constructed to enhance innate immunotherapy. Briefly, when M@P@HA was targeted into tumor cells, the nanoparticles decomposed with Mn2+ and activated the release of protoporphyrin (PpIX). Under light irradiation, the generated reactive oxygen species disrupt the cellular redox homeostasis to lead cytoplasm leakage of damaged mitochondrial double-stranded (ds) DNA, which is the initiator of the STING signal. Simultaneously, Mn2+ as the immunoregulator could significantly increase the activity of related protein of a STING signal, such as cyclic GMP-AMP synthase (cGAS) and STING, to further amplify the STING signal of tumor cells. Subsequently, the STING signal of tumor-associated macrophages (TAM) is also activated by capturing dsDNA and Mn2+ that escaped from tumor cells, so as to enhance innate immunity. It is found that, by amplifying the STING signal of tumor tissue, M@P@HA could not only activate innate immunity but also cascade to activate CD8+ T cell infiltration even in a tumor with low immunogenicity.
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Affiliation(s)
- Wen Song
- Institute of Biology and Medicine, College of Life Science and Health, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China
| | - Shu-Jun Song
- Institute of Biology and Medicine, College of Life Science and Health, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China
| | - Jing Kuang
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Hang Yang
- Institute of Biology and Medicine, College of Life Science and Health, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China
| | - Tao Yu
- Department of Orthopedic Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin second Road, Shanghai 200025, China
| | - Fan Yang
- Institute of Biology and Medicine, College of Life Science and Health, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China
| | - Tao Wan
- Institute of Biology and Medicine, College of Life Science and Health, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China
| | - Yi Xu
- Institute of Biology and Medicine, College of Life Science and Health, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China
| | - Si-Tian Wei
- Institute of Biology and Medicine, College of Life Science and Health, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China
| | - Mu-Xuan Li
- Institute of Biology and Medicine, College of Life Science and Health, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China
| | - Yuan Xiong
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Ying Zhou
- Institute of Biology and Medicine, College of Life Science and Health, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China
| | - Wen-Xiu Qiu
- Institute of Biology and Medicine, College of Life Science and Health, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China
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Post-translational amino acid conversion in photosystem II as a possible origin of photosynthetic oxygen evolution. Nat Commun 2022; 13:4211. [PMID: 35864123 PMCID: PMC9304363 DOI: 10.1038/s41467-022-31931-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 07/08/2022] [Indexed: 12/18/2022] Open
Abstract
Photosynthetic oxygen evolution is performed at the Mn cluster in photosystem II (PSII). The advent of this reaction on ancient Earth changed its environment by generating an oxygenic atmosphere. However, how oxygen evolution originated during the PSII evolution remains unknown. Here, we characterize the site-directed mutants at the carboxylate ligands to the Mn cluster in cyanobacterial PSII. A His residue replaced for D1-D170 is found to be post-translationally converted to the original Asp to recover oxygen evolution. Gln/Asn residues in the mutants at D1-E189/D1-D342 are also converted to Glu/Asp, suggesting that amino-acid conversion is a common phenomenon at the ligand sites of the Mn cluster. We hypothesize that post-translational generation of carboxylate ligands in ancestral PSII could have led to the formation of a primitive form of the Mn cluster capable of partial water oxidation, which could have played a crucial role in the evolutionary process of photosynthetic oxygen evolution. How photosynthetic oxygen evolution is originated on ancient Earth is unknown. Here, the authors find that some amino acid residues at the ligand sites of the Mn cluster can be posttranslationally converted to the original carboxylate residues, which could have contributed to the evolutionary process of photosynthetic oxygen evolution.
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10
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Competitive interaction of Mn(II) and Fe(II) cations with the high-affinity Mn-binding site of the photosystem II: evolutionary aspect. ORIGINS LIFE EVOL B 2022; 52:113-128. [PMID: 35796895 DOI: 10.1007/s11084-022-09625-8] [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: 04/24/2022] [Accepted: 06/16/2022] [Indexed: 10/17/2022]
Abstract
The evolutionary origin of the oxygen-evolving complex (OEC) in the photosystem II (PSII) is still unclear, as is the nature of electron source for the photosystem before the OEC had appeared. Johnson et al. (in PNAS 110:11238, 2013) speculated that Mn(II) cations were the source of electrons for transitional photosystems. However, Archean oceans also contained Fe(II) cations at concentrations comparable or higher than that of Mn(II). Fe(II) cations can bind to the high-affinity (НА) Mn-binding site in the OEC (Semin et al. in Biochemistry 41:5854, 2002). Now we have investigated the competitive interaction of Mn(II) and Fe(II) cations with the HA site in the Mn-depleted PSII membranes (PSII[-Mn]). Fe cations, oxidized under illumination, bind strongly to the HA site and, thus, prevent the interaction of Mn(II) with this site. If the Mn(II) and Fe(II) cations, at relatively equal concentration, are simultaneously present in the buffer, together with PSII(-Mn) membranes, there is competition between these two cations for the binding site, which manifests itself in partial inhibition of the Mn(II) oxidation and the blocking of the HA site by Fe(II) cations. If the concentration of Fe(II) cations is several times higher than the concentration of Mn(II), the HA site is completely blocked and the oxidation of Mn(II) cations is inhibited; under saturating light, the effectiveness of this inhibitory effect increases. This may be due to the generation of H2O2 on the acceptor side of the photosystem, which significantly accelerates the rate of the turnover reaction of Mn(II) on the HA site.
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11
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Mahjoubi Y, Rzigui T, Kharbech O, Mohamed SN, Abaza L, Chaoui A, Nouairi I, Djebali W. Exogenous nitric oxide alleviates manganese toxicity in bean plants by modulating photosynthesis in relation to leaf lipid composition. PROTOPLASMA 2022; 259:949-964. [PMID: 34651236 DOI: 10.1007/s00709-021-01713-2] [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: 07/17/2021] [Accepted: 09/29/2021] [Indexed: 06/13/2023]
Abstract
Nitric oxide (NO) is a signaling molecule controlling several steps of plant development and defense process under stress conditions. NO-induced alleviation of manganese (Mn) toxicity was investigated on bean plants submitted for 28 days to 500 µM MnCl2. Manganese excess decreased plant dry weight and elongation and increased levels of reactive oxygen species and lipid peroxidation leading to up-regulation of superoxide dismutase, catalase, and ascorbate peroxidase activities. The inhibitory effects of Mn on plant growth were associated to reduction of light-saturated carbon assimilation (Amax), stomatal conductance (gs), and transpiration (E). By contrast, Mn induced significant increase in the apparent quantum yield (ɸ) and light compensation point (LCP). Interestingly, intracellular CO2 (Ci) remains stable under Mn stress. Concomitantly, leaf membrane lipids have drastically reduced under high Mn concentration. After Mn exposition, leaf fatty acids exhibited a significant loss of linolenic acid, accompanied by an accumulation of palmitoleic, stearic, and linoleic acids leading to alteration of lipid desaturation. NO supply reversed Mn toxicity as evidenced by enhancement of growth biomass and recovery of Amax, E, ɸ, and LCP. Similarly, NO addition has positive effects on leaf lipid content and composition leading to restoration of lipid unsaturation. The modulation of fatty acid composition can be a way to reduce leaf membrane damages and maintain optimal photosynthesis and plant growth. Despite the absence of enough evidences in how NO is involved in lipid and photosynthesis recovery under Mn stress conditions, it is assumed that NO beneficial effects are attributable to NO/Mn cross-talk.
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Affiliation(s)
- Yethreb Mahjoubi
- Faculty of Sciences of Bizerte, LR18ES38 Plant Toxicology and Environmental Microbiology, University of Carthage, 7021, Bizerte, Tunisia
| | - Touhami Rzigui
- Silvopastoral Institute of Tabarka, University of Jendouba, Jendouba, Tunisia
| | - Oussama Kharbech
- Faculty of Sciences of Bizerte, LR18ES38 Plant Toxicology and Environmental Microbiology, University of Carthage, 7021, Bizerte, Tunisia
| | - Salma Nait Mohamed
- Laboratoire de Biotechnologie de l'Olivier, Borj-Cedria Technoparck, 95, 2050, Hammam-Lif, Tunisia
| | - Leila Abaza
- Laboratoire de Biotechnologie de l'Olivier, Borj-Cedria Technoparck, 95, 2050, Hammam-Lif, Tunisia
| | - Abdelilah Chaoui
- Faculty of Sciences of Bizerte, LR18ES38 Plant Toxicology and Environmental Microbiology, University of Carthage, 7021, Bizerte, Tunisia
| | - Issam Nouairi
- Laboratory of Legumes, Biotechnology Center of Borj-Cedria, B.P. 901, 2050, Hammam-Lif, Tunisia
| | - Wahbi Djebali
- Faculty of Sciences of Bizerte, LR18ES38 Plant Toxicology and Environmental Microbiology, University of Carthage, 7021, Bizerte, Tunisia.
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12
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Mineralogical and Genomic Constraints on the Origin of Microbial Mn Oxide Formation in Complexed Microbial Community at the Terrestrial Hot Spring. Life (Basel) 2022; 12:life12060816. [PMID: 35743847 PMCID: PMC9224936 DOI: 10.3390/life12060816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 05/18/2022] [Accepted: 05/26/2022] [Indexed: 11/17/2022] Open
Abstract
Manganese (Mn) oxides are widespread on the surface environments of the modern Earth. The role of microbial activities in the formation of Mn oxides has been discussed for several decades. However, the mechanisms of microbial Mn oxidation, and its role in complex microbial communities in natural environments, remain uncertain. Here, we report the geochemical, mineralogical, and metagenomic evidence for biogenic Mn oxides, found in Japanese hot spring sinters. The low crystallinity of Mn oxides, and their spatial associations with organic matter, support the biogenic origin of Mn oxides. Specific multicopper oxidases (MCOs), which are considered Mn-oxidizing enzymes, were identified using metagenomic analyses. Nanoscale nuggets of copper sulfides were, also, discovered in the organic matter in Mn-rich sinters. A part of these copper sulfides most likely represents traces of MCOs, and this is the first report of traces of Mn-oxidizing enzyme in geological samples. Metagenomic analyses, surprisingly, indicated a close association of Mn oxides, not only in aerobic but also in anaerobic microbial communities. These new findings offer the unique and unified positions of Mn oxides, with roles that have not been ignored, to sustain anaerobic microbial communities in hot spring environments.
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Wang X, Xie GJ, Tian N, Dang CC, Cai C, Ding J, Liu BF, Xing DF, Ren NQ, Wang Q. Anaerobic microbial manganese oxidation and reduction: A critical review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 822:153513. [PMID: 35101498 DOI: 10.1016/j.scitotenv.2022.153513] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 01/24/2022] [Accepted: 01/25/2022] [Indexed: 06/14/2023]
Abstract
Manganese is a vital heavy metal abundant in terrestrial and aquatic environments. Anaerobic manganese redox reactions mediated by microorganisms have been recognized for a long time, which promote elements mobility and bioavailability in the environment. Biological anaerobic redox of manganese serves two reactions, including Mn(II) oxidation and Mn(IV) reduction. This review provides a comprehensive analysis of manganese redox cycles in the environment, closely related to greenhouse gas mitigation, the fate of nutrients, microbial bioremediation, and global biogeochemical cycle, including nitrogen, sulfur, and carbon. The oxidation and reduction of manganese occur cyclically and simultaneously in the environment. Anaerobic reduction of Mn(IV) receives electrons from methane, ammonium and sulfide, while Mn(II) can function as an electron source for manganese-oxidizing microorganisms for autotrophic denitrification and photosynthesis. The anaerobic redox transition between Mn(II) and Mn(IV) promotes a dynamic biogeochemical cycle coupled to microorganisms in water, soil and sediment environments. The discussion of reaction mechanisms, microorganism diversity, environmental influence bioremediation and application identify the research gaps for future investigation, which provides promising opportunities for further development of biotechnological applications to remediate contaminated environments.
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Affiliation(s)
- Xuan Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Guo-Jun Xie
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Ning Tian
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Cheng-Cheng Dang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Chen Cai
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Jie Ding
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Bing-Feng Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - De-Feng Xing
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Nan-Qi Ren
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Qilin Wang
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW 2007, Australia
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14
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Oliver N, Avramov AP, Nürnberg DJ, Dau H, Burnap RL. From manganese oxidation to water oxidation: assembly and evolution of the water-splitting complex in photosystem II. PHOTOSYNTHESIS RESEARCH 2022; 152:107-133. [PMID: 35397059 DOI: 10.1007/s11120-022-00912-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 03/03/2022] [Indexed: 06/14/2023]
Abstract
The manganese cluster of photosystem II has been the focus of intense research aiming to understand the mechanism of H2O-oxidation. Great effort has also been applied to investigating its oxidative photoassembly process, termed photoactivation that involves the light-driven incorporation of metal ions into the active Mn4CaO5 cluster. The knowledge gained on these topics has fundamental scientific significance, but may also provide the blueprints for the development of biomimetic devices capable of splitting water for solar energy applications. Accordingly, synthetic chemical approaches inspired by the native Mn cluster are actively being explored, for which the native catalyst is a useful benchmark. For both the natural and artificial catalysts, the assembly process of incorporating Mn ions into catalytically active Mn oxide complexes is an oxidative process. In both cases this process appears to share certain chemical features, such as producing an optimal fraction of open coordination sites on the metals to facilitate the binding of substrate water, as well as the involvement of alkali metals (e.g., Ca2+) to facilitate assembly and activate water-splitting catalysis. This review discusses the structure and formation of the metal cluster of the PSII H2O-oxidizing complex in the context of what is known about the formation and chemical properties of different Mn oxides. Additionally, the evolutionary origin of the Mn4CaO5 is considered in light of hypotheses that soluble Mn2+ was an ancient source of reductant for some early photosynthetic reaction centers ('photomanganotrophy'), and recent evidence that PSII can form Mn oxides with structural resemblance to the geologically abundant birnessite class of minerals. A new functional role for Ca2+ to facilitate sustained Mn2+ oxidation during photomanganotrophy is proposed, which may explain proposed physiological intermediates during the likely evolutionary transition from anoxygenic to oxygenic photosynthesis.
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Affiliation(s)
- Nicholas Oliver
- Physics Department, Freie Universität Berlin, Arnimallee 14, 14195, Berlin, Germany
| | - Anton P Avramov
- Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, OK, 74078, USA
| | - Dennis J Nürnberg
- Physics Department, Freie Universität Berlin, Arnimallee 14, 14195, Berlin, Germany
| | - Holger Dau
- Physics Department, Freie Universität Berlin, Arnimallee 14, 14195, Berlin, Germany
| | - Robert L Burnap
- Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, OK, 74078, USA.
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15
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Roy I, Wang C, Smieszek N, Li X, Tsapatsaris L, Chakrapani V. Formation of the Metastable Mn III Water Oxidation Intermediate in Birnessite is Controlled by a Dissolution-Deposition Process Involving Labile Mn II. CHEMSUSCHEM 2022; 15:e202200062. [PMID: 35253389 DOI: 10.1002/cssc.202200062] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/25/2022] [Indexed: 06/14/2023]
Abstract
Birnessite, the closest naturally occurring analog of the Mn4 CaO5 cluster of photosystem II, is an important model compound in the development of bio-inspired electrocatalysts for the water oxidation reaction. The present work reports the formation mechanism of the key MnIII intermediate realized through the study of the effects of several electrolyte anions and cations on the catalytic efficiency of birnessite. In situ spectroelectrochemical measurements show that the activity is controlled by a dynamic dissolution-oxidation process, wherein MnIII is formed through the oxidation of labile uncomplexed MnII that reversibly shuttles between the birnessite and the electrolyte in a manner similar to the photoactivation in photosystem II. The role of electrolyte cations of different ionic radii and hydration strengths is to control the interlayer spacing, whereas electrolyte anions control the extent of deprotonation of complexed MnII in the lattice. Both in turn govern the shuttling efficiency of uncomplexed MnII and its subsequent electro-oxidation to MnIII .
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Affiliation(s)
- Indroneil Roy
- Howard P. Isermann Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York, 12180, USA
| | - Chenying Wang
- Howard P. Isermann Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York, 12180, USA
| | - Nicholas Smieszek
- Howard P. Isermann Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York, 12180, USA
| | - Xinran Li
- Howard P. Isermann Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York, 12180, USA
| | - Leonidas Tsapatsaris
- Howard P. Isermann Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York, 12180, USA
| | - Vidhya Chakrapani
- Howard P. Isermann Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York, 12180, USA
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16
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Narzi D, Guidoni L. Structural and dynamic insights into Mn 4Ca cluster-depleted Photosystem II. Phys Chem Chem Phys 2021; 23:27428-27436. [PMID: 34860219 DOI: 10.1039/d1cp02367e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the first steps of natural oxygenic photosynthesis, sunlight is used to oxidize water molecules to protons, electrons and molecular oxygen. This reaction takes place on the Mn4Ca cluster located in the reaction centre of Photosystem II (PSII), where the cluster is assembled and continuously repaired through a process known as photoactivation. Understanding the molecular details of such a process has important implications in different fields, in particular inspiring synthesis and repair strategies for artificial photosynthesis devices. In this regard, a detailed structural and dynamic characterization of Photosystem II lacking a Mn4Ca cluster, namely apo PSII, is a prerequisite for the full comprehension of the photoactivation. Recently, the structure of the apo PSII was resolved at 2.55 Å resolution [Zhang et al., eLife, 2017, 6, e26933], suggesting a pre-organized structure of the protein cavity hosting the cluster. Anyway, the question of whether these findings are a feature of the method used remains open. Here, by means of classical Molecular Dynamics simulations, we characterized the structural and dynamic features of the apo PSII for different protonation states of the cluster cavity. Albeit an overall conformational stability common to all investigated systems, we found significant deviations in the conformation of the side chains of the active site with respect to the X-ray positions. Our findings suggest that not all residues acting as Mn ligands are pre-organized prior to the Mn4Ca formation and previous local conformational changes are required in order to bind the first Mn ion in the high-affinity binding site.
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Affiliation(s)
- Daniele Narzi
- Department of Physical and Chemical Science, Università dellAquila, LAquila, Italy.
| | - Leonardo Guidoni
- Department of Physical and Chemical Science, Università dellAquila, LAquila, Italy.
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17
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Moghaddam NJ, Feizi H, Mohammadi MR, Bagheri R, Chernev P, Song Z, Dau H, Najafpour MM. A Chemical Evolution‐Like Method to Synthesize a Water‐Oxidizing Catalyst. ChemElectroChem 2021. [DOI: 10.1002/celc.202101105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Navid Jameei Moghaddam
- Department of Chemistry Institute for Advanced Studies in Basic Sciences (IASBS) Zanjan 45137-66731 Iran
| | - Hadi Feizi
- Department of Chemistry Institute for Advanced Studies in Basic Sciences (IASBS) Zanjan 45137-66731 Iran
| | | | - Robabeh Bagheri
- Surface Protection Research Group Surface Department Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences 519 Zhuangshi Road Ningbo 315201 China
| | - Petko Chernev
- Freie Universität Berlin Fachbereich Physik Arnimallee 14 14195 Berlin Germany
- Uppsala University Department of Chemistry – Ångströmlaboratoriet Lägerhyddsvägen 1 75120 Uppsala Sweden
| | - Zhenlun Song
- Surface Protection Research Group Surface Department Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences 519 Zhuangshi Road Ningbo 315201 China
| | - Holger Dau
- Freie Universität Berlin Fachbereich Physik Arnimallee 14 14195 Berlin Germany
| | - Mohammad Mahdi Najafpour
- Department of Chemistry Institute for Advanced Studies in Basic Sciences (IASBS) Zanjan 45137-66731 Iran
- Center of Climate Change and Global Warming Institute for Advanced Studies in Basic Sciences (IASBS) Zanjan 45137-66731 Iran
- Research Center for Basic Sciences & Modern Technologies (RBST) Institute for Advanced Studies in Basic Sciences (IASBS) Zanjan 45137-66731 Iran
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18
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Oliver T, Sánchez-Baracaldo P, Larkum AW, Rutherford AW, Cardona T. Time-resolved comparative molecular evolution of oxygenic photosynthesis. BIOCHIMICA ET BIOPHYSICA ACTA. BIOENERGETICS 2021; 1862:148400. [PMID: 33617856 PMCID: PMC8047818 DOI: 10.1016/j.bbabio.2021.148400] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 02/01/2021] [Accepted: 02/12/2021] [Indexed: 12/15/2022]
Abstract
Oxygenic photosynthesis starts with the oxidation of water to O2, a light-driven reaction catalysed by photosystem II. Cyanobacteria are the only prokaryotes capable of water oxidation and therefore, it is assumed that the origin of oxygenic photosynthesis is a late innovation relative to the origin of life and bioenergetics. However, when exactly water oxidation originated remains an unanswered question. Here we use phylogenetic analysis to study a gene duplication event that is unique to photosystem II: the duplication that led to the evolution of the core antenna subunits CP43 and CP47. We compare the changes in the rates of evolution of this duplication with those of some of the oldest well-described events in the history of life: namely, the duplication leading to the Alpha and Beta subunits of the catalytic head of ATP synthase, and the divergence of archaeal and bacterial RNA polymerases and ribosomes. We also compare it with more recent events such as the duplication of Cyanobacteria-specific FtsH metalloprotease subunits and the radiation leading to Margulisbacteria, Sericytochromatia, Vampirovibrionia, and other clades containing anoxygenic phototrophs. We demonstrate that the ancestral core duplication of photosystem II exhibits patterns in the rates of protein evolution through geological time that are nearly identical to those of the ATP synthase, RNA polymerase, or the ribosome. Furthermore, we use ancestral sequence reconstruction in combination with comparative structural biology of photosystem subunits, to provide additional evidence supporting the premise that water oxidation had originated before the ancestral core duplications. Our work suggests that photosynthetic water oxidation originated closer to the origin of life and bioenergetics than can be documented based on phylogenetic or phylogenomic species trees alone.
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Affiliation(s)
- Thomas Oliver
- Department of Life Sciences, Imperial College London, London, UK
| | | | | | | | - Tanai Cardona
- Department of Life Sciences, Imperial College London, London, UK.
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19
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Hong H, Lee JM, Yun J, Kim YJ, Kim SI, Shin H, Ahn HS, Hwang SJ, Ryu W. Enhanced interfacial electron transfer between thylakoids and RuO 2 nanosheets for photosynthetic energy harvesting. SCIENCE ADVANCES 2021; 7:7/20/eabf2543. [PMID: 33980487 PMCID: PMC8115919 DOI: 10.1126/sciadv.abf2543] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 03/29/2021] [Indexed: 06/12/2023]
Abstract
The harvesting of photosynthetic electrons (PEs) directly from photosynthetic complexes has been demonstrated over the past decade. However, their limited efficiency and stability have hampered further practical development. For example, despite its importance, the interfacial electron transfer between the photosynthetic apparatus and the electrode has received little attention. In this study, we modified electrodes with RuO2 nanosheets to enhance the extraction of PEs from thylakoids, and the PE transfer was promoted by proton adsorption and surface polarity characteristics. The adsorbed protons maintained the potential of an electrode more positive, and the surface polarity enhanced thylakoid attachment to the electrode in addition to promoting ensemble docking between the redox species and the electrode. The RuO2 bioanode exhibited a five times larger current density and a four times larger power density than the Au bioanode. Last, the electric calculators were successfully powered by photosynthetic energy using a RuO2 bioanode.
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Affiliation(s)
- Hyeonaug Hong
- Department of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Jang Mee Lee
- Global Innovative Center for Advanced Nanomaterials (GICAN), School of Engineering, Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - JaeHyoung Yun
- Department of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Yong Jae Kim
- Department of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Seon Il Kim
- Department of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - HyeIn Shin
- Department of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Hyun S Ahn
- Department of Chemistry, College of Science, Yonsei University, Seoul 03722, Republic of Korea
| | - Seong-Ju Hwang
- Department of Materials Science and Engineering, College of Engineering, Yonsei University, Seoul 03722, Republic of Korea.
| | - WonHyoung Ryu
- Department of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea.
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