Turning manganese into gold: Efficient electrochemical CO2 reduction by a fac-Mn(apbpy)(CO)3Br complex in a gas–liquid interface flow cell
Publication date: 15 July 2021Source: Chemical Engineering Journal, Volume 416Author(s): Jonathan Filippi, Laura Rotundo, Roberto Gobetto, Hamish A. Miller, Carlo Nervi, Alessandro Lavacchi, Francesco Vizza (Source: Chemical Engineering Journal)
Source: Chemical Engineering Journal - February 27, 2021 Category: Chemistry Source Type: research

The geochemical behavior of trace metals and nutrients in submerged sediments of the Three Gorges Reservoir and a critical review on risk assessment methods
In this study, no significant risk from either TMs or nutrients was identified.PMID:33638085 | DOI:10.1007/s11356-021-12827-8 (Source: Environmental Science and Pollution Research International)
Source: Environmental Science and Pollution Research International - February 27, 2021 Category: Environmental Health Authors: Bin Wang Shu Chen Yuwei Chen Nelson Belzile Rui Zheng Yuankun Yang Kaibin Fu Yongcan Chen Binliang Lin Zhaowei Liu Jian Sun Source Type: research

Phototriggered cytotoxic properties of tricarbonyl manganese(I) complexes bearing α-diimine ligands towards HepG2
J Biol Inorg Chem. 2021 Feb 27. doi: 10.1007/s00775-020-01843-7. Online ahead of print.ABSTRACTReaction between bromo tricarbonyl manganese(I) and N,N'-bis(phenyl)-1,4-diaza-1,3-butadiene ligands, bearing different electron-donating and electron-withdrawing groups R = OCH3, Cl, and NO2 in the ortho- and para-positions on the phenyl substituent, afforded [MnBr(CO)3(N-N)] complexes. The influence of the character and position of the substituent on the dark stability and carbon monoxide releasing kinetics was systematically investigated and correlated with the data of the time-dependent density functional theory calculations....
Source: Journal of Biological Inorganic Chemistry : JBIC - February 27, 2021 Category: Chemistry Authors: Ahmed M Mansour Krzysztof Radacki Rabaa M Khaled Marwa H Soliman Nour T Abdel-Ghani Source Type: research

Cabbage cultivars influence transfer and toxicity of cadmium in soil-Chinese flowering cabbage Brassica campestris-cutworm Spodoptera litura larvae
Ecotoxicol Environ Saf. 2021 Feb 24;213:112076. doi: 10.1016/j.ecoenv.2021.112076. Online ahead of print.ABSTRACTWe executed a pot experiment to examine the differences of absorption, chemical forms, subcellular distribution, and toxicity of Cd between two cultivars of Chinese flowering cabbage Brassica campestris [Lvbao701 (low-Cd cultivar) and Chicaixin No.4 (high-Cd cultivar)]. Compared to Chicaixin No.4, the presence of Lvbao701 enhanced the proportion of insoluble Cd forms in soil, Lvbao701 roots and leaves had higher proportion of Cd converted into insoluble phosphate precipitates and pectate-or protein-bound forms a...
Source: Ecotoxicology and Environmental Safety - February 27, 2021 Category: Environmental Health Authors: Jin Chen Pan Jin Shimin Huang Yeshan Guo Fengxiao Tan Jianwu Wang Yinghua Shu Source Type: research

Manganese(III) porphyrin oligomers as high-relaxivity MRI contrast agents
Bioorg Med Chem. 2021 Feb 20;35:116090. doi: 10.1016/j.bmc.2021.116090. Online ahead of print.ABSTRACTManganese(III) porphyrins (MnIIIPs) as MRI contrast agents (CAs) have drawn particular attention due to their high longitudinal relaxivity (r1) and unique biodistribution. In this work, two MnIIIP-based oligomers, MnPD and MnPT, were designed to further improve the relaxivity with ease of synthesis. The two compounds were fully characterized and their nuclear magnetic relaxation dispersion (NMRD) profiles were acquired with a fast field cycling NMR relaxometer. Both of the compounds exhibited extended high molar r1 at high...
Source: Bioorganic and Medicinal Chemistry - February 27, 2021 Category: Chemistry Authors: Hui-Shan Lu Meng-Yi Wang Fei-Peng Ying Yuan-Yuan Lv Source Type: research

The geochemical behavior of trace metals and nutrients in submerged sediments of the Three Gorges Reservoir and a critical review on risk assessment methods
In this study, no significant risk from either TMs or nutrients was identified.PMID:33638085 | DOI:10.1007/s11356-021-12827-8 (Source: Environmental Science and Pollution Research International)
Source: Environmental Science and Pollution Research International - February 27, 2021 Category: Environmental Health Authors: Bin Wang Shu Chen Yuwei Chen Nelson Belzile Rui Zheng Yuankun Yang Kaibin Fu Yongcan Chen Binliang Lin Zhaowei Liu Jian Sun Source Type: research

Cabbage cultivars influence transfer and toxicity of cadmium in soil-Chinese flowering cabbage Brassica campestris-cutworm Spodoptera litura larvae
Ecotoxicol Environ Saf. 2021 Feb 24;213:112076. doi: 10.1016/j.ecoenv.2021.112076. Online ahead of print.ABSTRACTWe executed a pot experiment to examine the differences of absorption, chemical forms, subcellular distribution, and toxicity of Cd between two cultivars of Chinese flowering cabbage Brassica campestris [Lvbao701 (low-Cd cultivar) and Chicaixin No.4 (high-Cd cultivar)]. Compared to Chicaixin No.4, the presence of Lvbao701 enhanced the proportion of insoluble Cd forms in soil, Lvbao701 roots and leaves had higher proportion of Cd converted into insoluble phosphate precipitates and pectate-or protein-bound forms a...
Source: Ecotoxicology and Environmental Safety - February 27, 2021 Category: Environmental Health Authors: Jin Chen Pan Jin Shimin Huang Yeshan Guo Fengxiao Tan Jianwu Wang Yinghua Shu Source Type: research

Phototriggered cytotoxic properties of tricarbonyl manganese(I) complexes bearing α-diimine ligands towards HepG2
J Biol Inorg Chem. 2021 Feb 27. doi: 10.1007/s00775-020-01843-7. Online ahead of print.ABSTRACTReaction between bromo tricarbonyl manganese(I) and N,N'-bis(phenyl)-1,4-diaza-1,3-butadiene ligands, bearing different electron-donating and electron-withdrawing groups R = OCH3, Cl, and NO2 in the ortho- and para-positions on the phenyl substituent, afforded [MnBr(CO)3(N-N)] complexes. The influence of the character and position of the substituent on the dark stability and carbon monoxide releasing kinetics was systematically investigated and correlated with the data of the time-dependent density functional theory calculations....
Source: Journal of Biological Inorganic Chemistry : JBIC - February 27, 2021 Category: Chemistry Authors: Ahmed M Mansour Krzysztof Radacki Rabaa M Khaled Marwa H Soliman Nour T Abdel-Ghani Source Type: research

Manganese(III) porphyrin oligomers as high-relaxivity MRI contrast agents
Bioorg Med Chem. 2021 Feb 20;35:116090. doi: 10.1016/j.bmc.2021.116090. Online ahead of print.ABSTRACTManganese(III) porphyrins (MnIIIPs) as MRI contrast agents (CAs) have drawn particular attention due to their high longitudinal relaxivity (r1) and unique biodistribution. In this work, two MnIIIP-based oligomers, MnPD and MnPT, were designed to further improve the relaxivity with ease of synthesis. The two compounds were fully characterized and their nuclear magnetic relaxation dispersion (NMRD) profiles were acquired with a fast field cycling NMR relaxometer. Both of the compounds exhibited extended high molar r1 at high...
Source: Bioorganic and Medicinal Chemistry - February 27, 2021 Category: Chemistry Authors: Hui-Shan Lu Meng-Yi Wang Fei-Peng Ying Yuan-Yuan Lv Source Type: research

The geochemical behavior of trace metals and nutrients in submerged sediments of the Three Gorges Reservoir and a critical review on risk assessment methods
In this study, no significant risk from either TMs or nutrients was identified.PMID:33638085 | DOI:10.1007/s11356-021-12827-8 (Source: Environmental Science and Pollution Research International)
Source: Environmental Science and Pollution Research International - February 27, 2021 Category: Environmental Health Authors: Bin Wang Shu Chen Yuwei Chen Nelson Belzile Rui Zheng Yuankun Yang Kaibin Fu Yongcan Chen Binliang Lin Zhaowei Liu Jian Sun Source Type: research

Phototriggered cytotoxic properties of tricarbonyl manganese(I) complexes bearing α-diimine ligands towards HepG2
J Biol Inorg Chem. 2021 Feb 27. doi: 10.1007/s00775-020-01843-7. Online ahead of print.ABSTRACTReaction between bromo tricarbonyl manganese(I) and N,N'-bis(phenyl)-1,4-diaza-1,3-butadiene ligands, bearing different electron-donating and electron-withdrawing groups R = OCH3, Cl, and NO2 in the ortho- and para-positions on the phenyl substituent, afforded [MnBr(CO)3(N-N)] complexes. The influence of the character and position of the substituent on the dark stability and carbon monoxide releasing kinetics was systematically investigated and correlated with the data of the time-dependent density functional theory calculations....
Source: Journal of Biological Inorganic Chemistry : JBIC - February 27, 2021 Category: Chemistry Authors: Ahmed M Mansour Krzysztof Radacki Rabaa M Khaled Marwa H Soliman Nour T Abdel-Ghani Source Type: research

Phototriggered cytotoxic properties of tricarbonyl manganese(I) complexes bearing α-diimine ligands towards HepG2
J Biol Inorg Chem. 2021 Feb 27. doi: 10.1007/s00775-020-01843-7. Online ahead of print.ABSTRACTReaction between bromo tricarbonyl manganese(I) and N,N'-bis(phenyl)-1,4-diaza-1,3-butadiene ligands, bearing different electron-donating and electron-withdrawing groups R = OCH3, Cl, and NO2 in the ortho- and para-positions on the phenyl substituent, afforded [MnBr(CO)3(N-N)] complexes. The influence of the character and position of the substituent on the dark stability and carbon monoxide releasing kinetics was systematically investigated and correlated with the data of the time-dependent density functional theory calculations....
Source: Journal of Biological Inorganic Chemistry : JBIC - February 27, 2021 Category: Chemistry Authors: Ahmed M Mansour Krzysztof Radacki Rabaa M Khaled Marwa H Soliman Nour T Abdel-Ghani Source Type: research

Phototriggered cytotoxic properties of tricarbonyl manganese(I) complexes bearing α-diimine ligands towards HepG2
J Biol Inorg Chem. 2021 Feb 27. doi: 10.1007/s00775-020-01843-7. Online ahead of print.ABSTRACTReaction between bromo tricarbonyl manganese(I) and N,N'-bis(phenyl)-1,4-diaza-1,3-butadiene ligands, bearing different electron-donating and electron-withdrawing groups R = OCH3, Cl, and NO2 in the ortho- and para-positions on the phenyl substituent, afforded [MnBr(CO)3(N-N)] complexes. The influence of the character and position of the substituent on the dark stability and carbon monoxide releasing kinetics was systematically investigated and correlated with the data of the time-dependent density functional theory calculations....
Source: Journal of Biological Inorganic Chemistry : JBIC - February 27, 2021 Category: Chemistry Authors: Ahmed M Mansour Krzysztof Radacki Rabaa M Khaled Marwa H Soliman Nour T Abdel-Ghani Source Type: research

Phototriggered cytotoxic properties of tricarbonyl manganese(I) complexes bearing α-diimine ligands towards HepG2
J Biol Inorg Chem. 2021 Feb 27. doi: 10.1007/s00775-020-01843-7. Online ahead of print.ABSTRACTReaction between bromo tricarbonyl manganese(I) and N,N'-bis(phenyl)-1,4-diaza-1,3-butadiene ligands, bearing different electron-donating and electron-withdrawing groups R = OCH3, Cl, and NO2 in the ortho- and para-positions on the phenyl substituent, afforded [MnBr(CO)3(N-N)] complexes. The influence of the character and position of the substituent on the dark stability and carbon monoxide releasing kinetics was systematically investigated and correlated with the data of the time-dependent density functional theory calculations....
Source: Journal of Biological Inorganic Chemistry : JBIC - February 27, 2021 Category: Chemistry Authors: Ahmed M Mansour Krzysztof Radacki Rabaa M Khaled Marwa H Soliman Nour T Abdel-Ghani Source Type: research

Phototriggered cytotoxic properties of tricarbonyl manganese(I) complexes bearing α-diimine ligands towards HepG2
J Biol Inorg Chem. 2021 Feb 27. doi: 10.1007/s00775-020-01843-7. Online ahead of print.ABSTRACTReaction between bromo tricarbonyl manganese(I) and N,N'-bis(phenyl)-1,4-diaza-1,3-butadiene ligands, bearing different electron-donating and electron-withdrawing groups R = OCH3, Cl, and NO2 in the ortho- and para-positions on the phenyl substituent, afforded [MnBr(CO)3(N-N)] complexes. The influence of the character and position of the substituent on the dark stability and carbon monoxide releasing kinetics was systematically investigated and correlated with the data of the time-dependent density functional theory calculations....
Source: Journal of Biological Inorganic Chemistry : JBIC - February 27, 2021 Category: Chemistry Authors: Ahmed M Mansour Krzysztof Radacki Rabaa M Khaled Marwa H Soliman Nour T Abdel-Ghani Source Type: research

Phototriggered cytotoxic properties of tricarbonyl manganese(I) complexes bearing α-diimine ligands towards HepG2
J Biol Inorg Chem. 2021 Feb 27. doi: 10.1007/s00775-020-01843-7. Online ahead of print.ABSTRACTReaction between bromo tricarbonyl manganese(I) and N,N'-bis(phenyl)-1,4-diaza-1,3-butadiene ligands, bearing different electron-donating and electron-withdrawing groups R = OCH3, Cl, and NO2 in the ortho- and para-positions on the phenyl substituent, afforded [MnBr(CO)3(N-N)] complexes. The influence of the character and position of the substituent on the dark stability and carbon monoxide releasing kinetics was systematically investigated and correlated with the data of the time-dependent density functional theory calculations....
Source: Journal of Biological Inorganic Chemistry : JBIC - February 27, 2021 Category: Chemistry Authors: Ahmed M Mansour Krzysztof Radacki Rabaa M Khaled Marwa H Soliman Nour T Abdel-Ghani Source Type: research

Manganese-catalyzed Electro-oxidative Azidation-annulation Cascade to Access Oxindoles and Quinolinones
Chem Asian J. 2021 Feb 26. doi: 10.1002/asia.202100121. Online ahead of print.ABSTRACTAn environmentally benign and proficient electro-oxidative tandem azidation-radical cyclization strategy is reported. Manganese catalyzed electrochemical reaction in an undivided cell under room temperature and the use of NaN 3 as the cheapest azide source are the key features of this protocol. Using this approach, a series of oxindole and quinolinone derivatives are synthesized in high yields. The synthesized azide functionality was efficiently converted to various valuable derivatives.PMID:33636034 | DOI:10.1002/asia.202100121 (Source: ...
Source: Chemistry, an Asian Journal - February 26, 2021 Category: Chemistry Authors: Debabrata Maiti Kingshuk Mahanty Suman De Sarkar Source Type: research

Trehalose and N-Acetyl Cysteine Alleviate Inflammatory Cytokine Production and Oxidative Stress in LPS-Stimulated Human Peripheral Blood Mononuclear Cells
Immunol Invest. 2021 Feb 25:1-17. doi: 10.1080/08820139.2021.1891095. Online ahead of print.ABSTRACTBackground: Evidence has shown that inflammation and oxidative stress are implicated in the development of a great number of human diseases. Trehalose possesses various biological effects including antioxidant and anti-inflammatory activities. However, there is little data on the effects of trehalose on human cells including peripheral blood mononuclear cells (PBMCs). Here, we aimed to investigate whether trehalose could attenuate oxidative stress and inflammation induced by lipopolysaccharides (LPS) in PBMCs.Methods: The en...
Source: Immunological Investigations - February 26, 2021 Category: Allergy & Immunology Authors: Ali Reza Bastin Mahdieh Nazari-Robati Hossein Sadeghi Amir Hossein Doustimotlagh Asie Sadeghi Source Type: research

[ASAP] Shallow Groundwater Manganese Merits Deeper Consideration
Environmental Science& TechnologyDOI: 10.1021/acs.est.0c08065 (Source: Environmental Science and Technology)
Source: Environmental Science and Technology - February 26, 2021 Category: Environmental Health Authors: managing.editor at est.acs.org (American Chemical Society) Source Type: research

Nonheme manganese(III) complexes for various olefin epoxidation: Synthesis, characterization and catalytic activity
Publication date: Available online 25 February 2021Source: Inorganica Chimica ActaAuthor(s): Sojeong Lee, Soyoung Park, Myoung Mi Lee, Jiyoung Lee, Cheal Kim (Source: Inorganica Chimica Acta)
Source: Inorganica Chimica Acta - February 26, 2021 Category: Chemistry Source Type: research

Degradation of ofloxacin by a manganese-oxidizing bacterium Pseudomonas sp. F2 and its biogenic manganese oxides
Bioresour Technol. 2021 Feb 14;328:124826. doi: 10.1016/j.biortech.2021.124826. Online ahead of print.ABSTRACTFluoroquinolone antibiotics like ofloxacin (OFL) have been frequently detected in the aquatic environment. Recently manganese-oxidizing bacteria (MOB) have attracted research efforts on the degradation of recalcitrant pollutants with the aid of their biogenic manganese oxides (BioMnOx). Herein, the degradation of OFL with a strain of MOB (Pseudomonas sp. F2) was investigated for the first time. It was found that the bacteria can degrade up to 100% of 5 μg/L OFL. BioMnOx and Mn(III) intermediates significantly co...
Source: Bioresource Technology - February 25, 2021 Category: Biotechnology Authors: Kangjie Li Anlin Xu Donghong Wu Siyan Zhao Tong Meng Yongjun Zhang Source Type: research

Degradation of ofloxacin by a manganese-oxidizing bacterium Pseudomonas sp. F2 and its biogenic manganese oxides
Bioresour Technol. 2021 Feb 14;328:124826. doi: 10.1016/j.biortech.2021.124826. Online ahead of print.ABSTRACTFluoroquinolone antibiotics like ofloxacin (OFL) have been frequently detected in the aquatic environment. Recently manganese-oxidizing bacteria (MOB) have attracted research efforts on the degradation of recalcitrant pollutants with the aid of their biogenic manganese oxides (BioMnOx). Herein, the degradation of OFL with a strain of MOB (Pseudomonas sp. F2) was investigated for the first time. It was found that the bacteria can degrade up to 100% of 5 μg/L OFL. BioMnOx and Mn(III) intermediates significantly co...
Source: Bioresource Technology - February 25, 2021 Category: Biotechnology Authors: Kangjie Li Anlin Xu Donghong Wu Siyan Zhao Tong Meng Yongjun Zhang Source Type: research

Degradation of ofloxacin by a manganese-oxidizing bacterium Pseudomonas sp. F2 and its biogenic manganese oxides
Bioresour Technol. 2021 Feb 14;328:124826. doi: 10.1016/j.biortech.2021.124826. Online ahead of print.ABSTRACTFluoroquinolone antibiotics like ofloxacin (OFL) have been frequently detected in the aquatic environment. Recently manganese-oxidizing bacteria (MOB) have attracted research efforts on the degradation of recalcitrant pollutants with the aid of their biogenic manganese oxides (BioMnOx). Herein, the degradation of OFL with a strain of MOB (Pseudomonas sp. F2) was investigated for the first time. It was found that the bacteria can degrade up to 100% of 5 μg/L OFL. BioMnOx and Mn(III) intermediates significantly co...
Source: Bioresource Technology - February 25, 2021 Category: Biotechnology Authors: Kangjie Li Anlin Xu Donghong Wu Siyan Zhao Tong Meng Yongjun Zhang Source Type: research

[ASAP] High Stability and Long Cycle Life of Rechargeable Sodium-Ion Battery Using Manganese Oxide Cathode: A Combined Density Functional Theory (DFT) and Experimental Study
ACS Applied Materials& InterfacesDOI: 10.1021/acsami.0c21081 (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - February 25, 2021 Category: Materials Science Authors: Bidhan Pandit, Sachin R. Rondiya, Nelson Y. Dzade, Shoyebmohamad F. Shaikh, Nitish Kumar, Emad S. Goda, Abdullah A. Al-Kahtani, Rajaram S. Mane, Sanjay Mathur, and Rahul R. Salunkhe Source Type: research

Manganese catalyzed C-alkylation of methyl < em > N < /em > -heteroarenes with primary alcohols
Chem Commun (Camb). 2021 Feb 24. doi: 10.1039/d1cc00181g. Online ahead of print.ABSTRACTC-Alkylations of nine different classes of methyl-substituted N-heteroarenes, including quinolines, quinoxalines, benzimidazoles, benzoxazoles, pyrazines, pyrimidines, pyridazines, pyridines, and triazines are disclosed. A bench stable earth-abundant Mn(i)-complex catalyzed the chemoselective hydrogen-transfer reaction utilizing a diverse range of primary alcohols as the non-fossil fuel-derived carbon source. The diversified N-heteroarenes (41 examples) were isolated in high yields and selectivities. Water is produced as the sole byprod...
Source: Chemical Communications - February 24, 2021 Category: Chemistry Authors: Akash Jana Amol Kumar Biplab Maji Source Type: research

A single pot template reaction towards a manganese based T1 contrast agent
Angew Chem Int Ed Engl. 2021 Feb 24. doi: 10.1002/anie.202100885. Online ahead of print.ABSTRACTManganese-based contrast agents (MnCAs) emerged as suitable alternatives to gadolinium-based contrast agents (GdCAs). However, due to their kinetic lability and laborious synthetic procedures, only a few MnCAs have found clinical MRI application. In this work, we have employed a highly innovative single pot template synthetic strategy to develop a MnCA, MnL Me , and studied the most important physicochemical properties in vitro . MnL Me displays optimized, r 1 relaxivities at both medium (20 and 64 MHz) and high magnetic fields ...
Source: Angewandte Chemie - February 24, 2021 Category: Chemistry Authors: Sellamuthu Anbu Sabrina H L Hoffmann Fabio Carniato Lawrence Kenning Thomas W Price Timothy J Prior Mauro Botta Andre F Martins Graeme J Stasiuk Source Type: research

[ASAP] Manganese-Catalyzed Electrochemical Tandem Azidation –Coarctate Reaction: Easy Access to 2-Azo-benzonitriles
Organic LettersDOI: 10.1021/acs.orglett.1c00169 (Source: Organic Letters)
Source: Organic Letters - February 24, 2021 Category: Chemistry Authors: Debabrata Maiti, Kingshuk Mahanty, and Suman De Sarkar Source Type: research

Manganese ferrite solid nanospheres solvothermally synthesized as catalyst for peroxymonosulfate activation to degrade and mineralize para-nitrophenol: Study of operational variables and catalyst reutilization
Publication date: June 2021Source: Journal of Environmental Chemical Engineering, Volume 9, Issue 3Author(s): Lucía Mateus, Alicia Torres-Alcázar, María Victoria López-Ramón, Miguel Ángel Álvarez, Carlos Moreno-Castilla (Source: Journal of Environmental Chemical Engineering)
Source: Journal of Environmental Chemical Engineering - February 23, 2021 Category: Chemistry Source Type: research

Synthesis and photoluminescence of manganese(II) naphtylphosphonic diamide complexes
Dalton Trans., 2021, Accepted Manuscript DOI: 10.1039/D1DT00123J, CommunicationMarco Bortoluzzi, Valentina Ferraro, Jesus Castro Manganese(II) halide complexes withN,N,N’,N’-tetramethyl-P-naphtalen-2-ylphosphonic diamide were synthesized from anhydrous MnX2 salts (X = Cl, Br, I) and characterized. Single-crystal X-ray diffraction revealed in all the cases slightly distorted tetrahedral... The content of this RSS Feed (c) The Royal Society of Chemistry (Source: RSC - Dalton Trans. latest articles)
Source: RSC - Dalton Trans. latest articles - February 23, 2021 Category: Chemistry Authors: Marco Bortoluzzi Source Type: research

Structure of 3'-PO(4)/5'-OH RNA ligase RtcB in complex with a 5'-OH oligonucleotide
RNA. 2021 Feb 22:rna.078692.121. doi: 10.1261/rna.078692.121. Online ahead of print.ABSTRACTRtcB enzymes comprise a widely distributed family of manganese- and GTP-dependent RNA repair enzymes that join 2',3'-cyclic phosphate ends to 5'-OH ends via RtcB-(histidinyl-N)-GMP, RNA 3'-phosphate, and RNA3'pp5'G intermediates. RtcB can ligate either 5'-OH RNA or 5'-OH DNA strands in vitro. The nucleic acid contacts of RtcB are uncharted. Here we report a 2.7 Å crystal structure of Pyrococcus horikoshii RtcB in complex with a 6-mer 5'-OH DNA oligonucleotide HOA1pT2pG3pT4pC5pC6, which reveals enzymic contacts of Asn202 to the...
Source: RNA - February 23, 2021 Category: Genetics & Stem Cells Authors: Ankan Banerjee Yehuda Goldgur Stewart Shuman Source Type: research

Structure of 3'-PO(4)/5'-OH RNA ligase RtcB in complex with a 5'-OH oligonucleotide
RNA. 2021 Feb 22:rna.078692.121. doi: 10.1261/rna.078692.121. Online ahead of print.ABSTRACTRtcB enzymes comprise a widely distributed family of manganese- and GTP-dependent RNA repair enzymes that join 2',3'-cyclic phosphate ends to 5'-OH ends via RtcB-(histidinyl-N)-GMP, RNA 3'-phosphate, and RNA3'pp5'G intermediates. RtcB can ligate either 5'-OH RNA or 5'-OH DNA strands in vitro. The nucleic acid contacts of RtcB are uncharted. Here we report a 2.7 Å crystal structure of Pyrococcus horikoshii RtcB in complex with a 6-mer 5'-OH DNA oligonucleotide HOA1pT2pG3pT4pC5pC6, which reveals enzymic contacts of Asn202 to the...
Source: RNA - February 23, 2021 Category: Genetics & Stem Cells Authors: Ankan Banerjee Yehuda Goldgur Stewart Shuman Source Type: research

Structure of 3'-PO(4)/5'-OH RNA ligase RtcB in complex with a 5'-OH oligonucleotide
RNA. 2021 Feb 22:rna.078692.121. doi: 10.1261/rna.078692.121. Online ahead of print.ABSTRACTRtcB enzymes comprise a widely distributed family of manganese- and GTP-dependent RNA repair enzymes that join 2',3'-cyclic phosphate ends to 5'-OH ends via RtcB-(histidinyl-N)-GMP, RNA 3'-phosphate, and RNA3'pp5'G intermediates. RtcB can ligate either 5'-OH RNA or 5'-OH DNA strands in vitro. The nucleic acid contacts of RtcB are uncharted. Here we report a 2.7 Å crystal structure of Pyrococcus horikoshii RtcB in complex with a 6-mer 5'-OH DNA oligonucleotide HOA1pT2pG3pT4pC5pC6, which reveals enzymic contacts of Asn202 to the...
Source: RNA - February 23, 2021 Category: Genetics & Stem Cells Authors: Ankan Banerjee Yehuda Goldgur Stewart Shuman Source Type: research

Structure of 3'-PO(4)/5'-OH RNA ligase RtcB in complex with a 5'-OH oligonucleotide
RNA. 2021 Feb 22:rna.078692.121. doi: 10.1261/rna.078692.121. Online ahead of print.ABSTRACTRtcB enzymes comprise a widely distributed family of manganese- and GTP-dependent RNA repair enzymes that join 2',3'-cyclic phosphate ends to 5'-OH ends via RtcB-(histidinyl-N)-GMP, RNA 3'-phosphate, and RNA3'pp5'G intermediates. RtcB can ligate either 5'-OH RNA or 5'-OH DNA strands in vitro. The nucleic acid contacts of RtcB are uncharted. Here we report a 2.7 Å crystal structure of Pyrococcus horikoshii RtcB in complex with a 6-mer 5'-OH DNA oligonucleotide HOA1pT2pG3pT4pC5pC6, which reveals enzymic contacts of Asn202 to the...
Source: RNA - February 23, 2021 Category: Genetics & Stem Cells Authors: Ankan Banerjee Yehuda Goldgur Stewart Shuman Source Type: research

Structure of 3'-PO(4)/5'-OH RNA ligase RtcB in complex with a 5'-OH oligonucleotide
RNA. 2021 Feb 22:rna.078692.121. doi: 10.1261/rna.078692.121. Online ahead of print.ABSTRACTRtcB enzymes comprise a widely distributed family of manganese- and GTP-dependent RNA repair enzymes that join 2',3'-cyclic phosphate ends to 5'-OH ends via RtcB-(histidinyl-N)-GMP, RNA 3'-phosphate, and RNA3'pp5'G intermediates. RtcB can ligate either 5'-OH RNA or 5'-OH DNA strands in vitro. The nucleic acid contacts of RtcB are uncharted. Here we report a 2.7 Å crystal structure of Pyrococcus horikoshii RtcB in complex with a 6-mer 5'-OH DNA oligonucleotide HOA1pT2pG3pT4pC5pC6, which reveals enzymic contacts of Asn202 to the...
Source: RNA - February 23, 2021 Category: Genetics & Stem Cells Authors: Ankan Banerjee Yehuda Goldgur Stewart Shuman Source Type: research

Structure of 3'-PO(4)/5'-OH RNA ligase RtcB in complex with a 5'-OH oligonucleotide
RNA. 2021 Feb 22:rna.078692.121. doi: 10.1261/rna.078692.121. Online ahead of print.ABSTRACTRtcB enzymes comprise a widely distributed family of manganese- and GTP-dependent RNA repair enzymes that join 2',3'-cyclic phosphate ends to 5'-OH ends via RtcB-(histidinyl-N)-GMP, RNA 3'-phosphate, and RNA3'pp5'G intermediates. RtcB can ligate either 5'-OH RNA or 5'-OH DNA strands in vitro. The nucleic acid contacts of RtcB are uncharted. Here we report a 2.7 Å crystal structure of Pyrococcus horikoshii RtcB in complex with a 6-mer 5'-OH DNA oligonucleotide HOA1pT2pG3pT4pC5pC6, which reveals enzymic contacts of Asn202 to the...
Source: RNA - February 23, 2021 Category: Genetics & Stem Cells Authors: Ankan Banerjee Yehuda Goldgur Stewart Shuman Source Type: research

Structure of 3'-PO(4)/5'-OH RNA ligase RtcB in complex with a 5'-OH oligonucleotide
RNA. 2021 Feb 22:rna.078692.121. doi: 10.1261/rna.078692.121. Online ahead of print.ABSTRACTRtcB enzymes comprise a widely distributed family of manganese- and GTP-dependent RNA repair enzymes that join 2',3'-cyclic phosphate ends to 5'-OH ends via RtcB-(histidinyl-N)-GMP, RNA 3'-phosphate, and RNA3'pp5'G intermediates. RtcB can ligate either 5'-OH RNA or 5'-OH DNA strands in vitro. The nucleic acid contacts of RtcB are uncharted. Here we report a 2.7 Å crystal structure of Pyrococcus horikoshii RtcB in complex with a 6-mer 5'-OH DNA oligonucleotide HOA1pT2pG3pT4pC5pC6, which reveals enzymic contacts of Asn202 to the...
Source: RNA - February 23, 2021 Category: Genetics & Stem Cells Authors: Ankan Banerjee Yehuda Goldgur Stewart Shuman Source Type: research

Structure of 3'-PO(4)/5'-OH RNA ligase RtcB in complex with a 5'-OH oligonucleotide
RNA. 2021 Feb 22:rna.078692.121. doi: 10.1261/rna.078692.121. Online ahead of print.ABSTRACTRtcB enzymes comprise a widely distributed family of manganese- and GTP-dependent RNA repair enzymes that join 2',3'-cyclic phosphate ends to 5'-OH ends via RtcB-(histidinyl-N)-GMP, RNA 3'-phosphate, and RNA3'pp5'G intermediates. RtcB can ligate either 5'-OH RNA or 5'-OH DNA strands in vitro. The nucleic acid contacts of RtcB are uncharted. Here we report a 2.7 Å crystal structure of Pyrococcus horikoshii RtcB in complex with a 6-mer 5'-OH DNA oligonucleotide HOA1pT2pG3pT4pC5pC6, which reveals enzymic contacts of Asn202 to the...
Source: RNA - February 23, 2021 Category: Genetics & Stem Cells Authors: Ankan Banerjee Yehuda Goldgur Stewart Shuman Source Type: research

Mechanistic insight into oxygen atom transfer reactions by mononuclear manganese(IV) –oxo adducts
Dalton Trans., 2021, Advance Article DOI: 10.1039/D0DT04436A, PaperPriya Singh, Eleanor Stewart-Jones, Melissa C. Denler, Timothy A. Jackson Rate enhancements in sulfoxidation reactions are often associated with a change in mechanism. Kinetic studies of sulfoxidation reactions by a series of MnIV–oxo complexes reveal large rate changes while retaining an oxygen-atom transfer mechanism. To cite this article before page numbers are assigned, use the DOI form of citation above. The content of this RSS Feed (c) The Royal Society of Chemistry (Source: RSC - Dalton Trans. latest articles)
Source: RSC - Dalton Trans. latest articles - February 23, 2021 Category: Chemistry Authors: Priya Singh Source Type: research

For publication in: Parkinsonism and related disorders Nigral MRI features of asymptomatic welders compared to Parkinson ’s disease patients
This study investigated whether asymptomatic welders exhibit changes in the substantia nigra (SN), the key pathological locus of PD. (Source: Parkinsonism and Related Disorders)
Source: Parkinsonism and Related Disorders - February 23, 2021 Category: Neurology Authors: Eun-Young Lee, Michael R. Flynn, Guangwei Du, Mechelle M. Lewis, Michael Goldenberg, Lan Kong, Richard B. Mailman, Xuemei Huang Source Type: research

Nigral MRI features of asymptomatic welders
This study investigated whether asymptomatic welders display differences in the substantia nigra (SN), the key pathological locus of PD. (Source: Parkinsonism and Related Disorders)
Source: Parkinsonism and Related Disorders - February 23, 2021 Category: Neurology Authors: Eun-Young Lee, Michael R. Flynn, Guangwei Du, Mechelle M. Lewis, Michael Goldenberg, Lan Kong, Richard B. Mailman, Young-Seoub Hong, Xuemei Huang Source Type: research

Molecules, Vol. 26, Pages 1175: Identification of Three Small Molecules That Can Selectively Influence Cellular Manganese Levels in a Mouse Striatal Cell Model
Bowman Manganese (Mn) is a biologically essential metal, critical as a cofactor for numerous enzymes such a glutamine synthetase and kinases such as ataxia-telangiectasia mutated (ATM). Similar to other essential metals such as iron and zinc, proper levels of Mn need to be achieved while simultaneously being careful to avoid excess levels of Mn that can be neurotoxic. A lifetime of occupational exposure to Mn can often lead to a Parkinsonian condition, also known as “manganism”, characterized by impaired gait, muscle spasms, and tremors. Despite the importance of its regulation, the mechanisms underlyin...
Source: Molecules - February 22, 2021 Category: Chemistry Authors: Horning Tang Thomas Aschner Bowman Tags: Article Source Type: research

Blood Trace Element Status in Multiple Sclerosis: a Systematic Review and Meta-analysis
Biol Trace Elem Res. 2021 Feb 21. doi: 10.1007/s12011-021-02621-5. Online ahead of print.ABSTRACTThe aim of this meta-analysis was to investigate whether the blood concentrations of patients with multiple sclerosis (MS) are associated with those of the healthy control group in terms of trace elements including zinc (Zn), iron (Fe), manganese (Mn), magnesium (Mg), selenium (Se), and copper (Cu). A comprehensive search was performed in online databases including PubMed, Scopus, Embase, and Web of Science for studies, which have addressed trace elements in MS up to July 23, 2020. The chi-square test and I2 statistic were util...
Source: Biological Trace Element Research - February 21, 2021 Category: Biology Authors: Elahe Nirooei Seyyed Mohammad Amin Kashani Soroor Owrangi Fatemeh Malekpour Maryam Niknam Fatemeh Moazzen Peyman Nowrouzi-Sohrabi Somaye Farzinmehr Hamed Akbari Source Type: research

Assessment of Concentrations of Heavy Metals in Postmyocardial Infarction Patients and Patients Free from Cardiovascular Event.
This study aimed to assess the concentration of some heavy metals (copper (Cu), zinc (Zn), manganese (Mn), cobalt (Co), and iron (Fe)) in the blood serum of postmyocardial infarction (post-MI) patients and patients free from myocardial infarction (MI) as well as estimate the relationship between the occurrence of MI and increased concentration of heavy metals. The concentration of heavy metals (Cu, Zn, Mn, Co, and Fe) was assessed using the inductively coupled plasma mass spectrometry technique in a group of 146 respondents divided into two groups: post-MI group (study group (SG), n = 74) and group without ca...
Source: Cardiology Research and Practice - February 21, 2021 Category: Cardiology Authors: Nowicki GJ, Ślusarska B, Prystupa A, Blicharska E, Adamczuk A, Czernecki T, Jankowski KJ Tags: Cardiol Res Pract Source Type: research

Carbon fibre electrodes for ultra long cycle life pseudocapacitors by engineering the nano-structure of vertical graphene and manganese dioxides
Publication date: Available online 13 February 2021Source: CarbonAuthor(s): Zhao Sha, Yang Zhou, Feng Huang, Wenmu Yang, Yuyan Yu, Jin Zhang, Shuying Wu, Sonya A. Brown, Shuhua Peng, Zhaojun Han, Chun H. Wang (Source: Carbon)
Source: Carbon - February 21, 2021 Category: Materials Science Source Type: research

Association between maternal urinary manganese concentrations and newborn telomere length: Results from a birth cohort study
CONCLUSIONS: Our findings suggested that maternal Mn concentration during the second trimester was positively associated with newborn TL. These results might provide an epidemiology evidence on the protective role of maternal Mn for newborn TL and offer clues for the early prevention of telomere shortening related diseases.PMID:33609998 | DOI:10.1016/j.ecoenv.2021.112037 (Source: Ecotoxicology and Environmental Safety)
Source: Ecotoxicology and Environmental Safety - February 20, 2021 Category: Environmental Health Authors: Jianing Bi Mingyang Wu Yunyun Liu Lulu Song Lulin Wang Qing Liu Kai Chen Chao Xiong Yuanyuan Li Wei Xia Shunqing Xu Aifen Zhou Youjie Wang Source Type: research

Effects of solution chemistry and humic acid on the transport of polystyrene microplastics in manganese oxides coated sand
Publication date: 5 July 2021Source: Journal of Hazardous Materials, Volume 413Author(s): Miaomiao Tan, Longfei Liu, Minggu Zhang, Yanli Liu, Chengliang Li (Source: Journal of Hazardous Materials)
Source: Journal of Hazardous Materials - February 19, 2021 Category: Environmental Health Source Type: research

Manganese dioxide nanoparticles decorated with chitosan for effective removal of lead and lanthanum ions from water by microwave sorption technique
Publication date: May 2021Source: Materials Science and Engineering: B, Volume 267Author(s): Mohamed E. Mahmoud, Ghada A.A. Ibrahim, Mohamed S. Abdelwahab (Source: Materials Science and Engineering: B)
Source: Materials Science and Engineering: B - February 18, 2021 Category: Materials Science Source Type: research