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Cryo-EM structures of Trypanosoma brucei gambiense ISG65 with human complement C3 and C3b and their roles in alternative pathway restriction
2023 / Nature CommunicationsAfrican Trypanosomes have developed elaborate mechanisms to escape the adaptive immune response, but little is known about complement evasion particularly at the early stage of infection. Here we show that ISG65 of the human-infective parasite Trypanosoma brucei gambiense is a receptor for human complement factor C3 and its activation fragments and that it takes ...
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Photothermal-enabled single-atom catalysts for high-efficiency hydrogen peroxide photosynthesis from natural seawater
2023 / Nature CommunicationsHydrogen peroxide (H2O2) is a powerful industrial oxidant and potential carbon-neutral liquid energy carrier. Sunlight-driven synthesis of H2O2 from the most earth-abundant O2 and seawater is highly desirable. However, the solar-to-chemical efficiency of H2O2 synthesis in particulate photocatalysis systems is low. Here, we present a cooperative sunlight-driven ph...
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A novel hybrid protein composed of superoxide-dismutase-active Cu(II) complex and lysozyme
2023 / Scientific ReportsA novel hybrid protein composed of a superoxide dismutase-active Cu(II) complex (CuST) and lysozyme (CuST@lysozyme) was prepared. The results of the spectroscopic and electrochemical analyses confirmed that CuST binds to lysozyme. We determined the crystal structure of CuST@lysozyme at 0.92 Å resolution, which revealed that the His15 imidazole group of lyso...
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Stretchable and Biocompatible Transparent Electrodes for Multimodal Biosignal Sensing from Exposed Skin
2023 / Advanced Electronic MaterialsReal-time health monitoring technology in daily life requires mechanically robust and transparent electrodes for multimodal biosignal sensing from exposed human epidermis. Here, highly stretchable transparent electrodes comprising a water-dispersed conductive polymer, poly(3,4-ethylenedioxyth iophene):poly(styrenesulfonate) (PEDOT:PSS), and a protic ionic liquid (I...
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Decomposition of 2-naphthol in water and its antibacterial and antiviral activities by LaMnO3 and LaCoO3 in the dark
2023 / Journal of the Ceramic Society of JapanSingle-phase powders of LaMnO3 and LaCoO3, lanthanum-based perovskites, were synthesized using the citric acid combustion method. The surface concentration of La in the obtained powder was higher in LaCoO3 than in LaMnO3. These samples decomposed 2-naphthol in water in the dark. The decomposition reaction is attributed to the Marsvan Krevelen (MvK) mechanism b...
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Bee venom as an alternative for antibiotics against Staphylococcus aureus infections
2023 / Scientific ReportsThe misuse of antibiotics has led to antibiotic-resistant bacterial strains, making it even harder to combat and eliminate their infections. Staphylococcus aureus causes various adverse infections and diseases, including skin abscesses, bloodstream infections, pneumonia, and joint infections. In this study, we aimed to test the cytotoxic and antibacterial effects...
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Hidden chemical order in disordered Ba7Nb4MoO20 revealed by resonant X-ray diffraction and solid-state NMR
2023 / Nature CommunicationsThe chemical order and disorder of solids have a decisive influence on the material properties. There are numerous materials exhibiting chemical order/disorder of atoms with similar X-ray atomic scattering factors and similar neutron scattering lengths. It is difficult to investigate such order/disorder hidden in the data obtained from conventional diffraction me...
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Elucidating Structure Formation in Highly Oriented Triple Cation Perovskite Films
2023 / Advanced ScienceMetal halide perovskites are an emerging class of crystalline semiconductors of great interest for application in optoelectronics. Their properties are dictated not only by their composition, but also by their crystalline structure and microstructure. While significant efforts are dedicated to the development of strategies for microstructural control, significantly...
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High Oxide-Ion Conductivity through the Interstitial Oxygen Site in Sillén Oxychlorides
2023 / Advanced Functional MaterialsOxide-ion conductors are gaining attention as future materials in energy applications, such as solid oxide fuel cells. Many Bi-containing compounds exhibit high oxide-ion conductivity via conventional vacancy mechanism. However, interstitial oxide-ion conduction is rare in Bi-containing materials. Herein, high oxide-ion conductivity is reported through interstitial...
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Improved Performance of Heat Source Free Water-Floating Carbon Nanotube Thermoelectric Generators Controlling Wettability Using Atmospheric-Pressure Plasma Jet and Waterproof Spray
2023 / Advanced Materials InterfacesWater-floating carbon nanotube thermoelectric generators (CNT-TEGs) can effectively power Internet of Things (IoT) applications. CNT-TEGs produce electricity by floating on water to generate a temperature gradient in the CNT films, where water pumping via capillary action causes evaporation-induced cooling in selected areas. However, the amount of electricity requi...
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Flat Solenoidal Ice-Binding Proteins as Scaffolds for Solid-Binders
2023 / Advanced Materials InterfacesSolid interfacing biomaterials is a crucial aspect of bionanotechnology and important for applications such as biosensing. Because of their potentially large contact area, flat solenoidal proteins are ideal scaffolds for designing proteins binding to surfaces of man-made solids such as minerals, metals, and plastics. To explore this opportunity, a naturally occurri...
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Novel Helical Trp- and Arg-Rich Antimicrobial Peptides Locate Near Membrane Surfaces and Rigidify Lipid Model Membranes
2023 / Advanced NanoBiomed ResearchAntibiotics are losing effectiveness as bacteria become resistant to conventional drugs. To find new alternatives, antimicrobial peptides (AMPs) are rationally designed with different lengths, charges, hydrophobicities (H), and hydrophobic moments (μH), containing only three types of amino acids: arginine, tryptophan, and valine. Six AMPs with low minimum inhibi...
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Phosphorylation and stabilization of EZH2 by DCAF1/VprBP trigger aberrant gene silencing in colon cancer
2023 / Nature CommunicationsOur recent work has shown that DCAF1 (also known as VprBP) is overexpressed in colon cancer and phosphorylates histone H2AT120 to drive epigenetic gene inactivation and oncogenic transformation. We have extended these observations by investigating whether DCAF1 also phosphorylates non-histone proteins as an additional mechanism linking its kinase activity to colo...
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Engineered Curli Nanofilaments as a Self-Adjuvanted Antigen Delivery Platform
2023 / Advanced Healthcare MaterialsProteinaceous nanoparticles constitute efficient antigen delivery systems in vaccine formulations due to their size and repetitive nature that mimic most invading pathogens and promote immune activation. Nonetheless, the coadministration of an adjuvant with subunit nanovaccines is usually required to induce a robust, long-lasting, and protective immune response. ...
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Green synthesis, characterization and biomedical applications of Centella asiatica-derived carbon dots
2023 / Carbon LettersMedicinal plant-derived carbon dots are eco-friendly and possess therapeutic properties. Among the medicinal plants studied throughout the world, Centella asiatica (L.) Urb. is known for its medicinal values, especially its neuroceutical and cogniceutical properties. This work discusses the green synthesis of carbon dots (CDs) using C. asiatica leaves as the carbon...
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