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Carboxylated cellulose nanocrystals mediated flower-like zinc oxide for antimicrobial without activation of light.
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State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China. Electronic address:
Conventional light-driven antimicrobial strategies of zinc oxide (ZnO) are limited by inadequate illumination in dark environments. In this study, carboxylated cellulose nanocrystals (MCNC) mediated flower-like ZnO (C@Z) with self-promoted reactive oxygen species release under dark is fabricated. The adsorption of Zn ions on MCNC prompts the growth of ZnO along the (002) crystal plane, forming a flower-like hybrid with superior dispersibility and oxygen vacancies compared to MCNC-free ZnO, which exposes the (100) plane.
View Article and Find Full Text PDFBiological studies reveal the role of trpA gene in biofilm formation, motility, hemolysis and virulence in Vibrio anguillarum.
Microb Pathog
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Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China; Marine Biomedical Science and Technology Innovation Platform of Lin-gang Special Area, Shanghai 201306, China. Electronic address:
Vibrio anguillarum is a pathogen responsible for vibriosis in aquaculture animals. The formation of bacterial biofilm contributes to infections and increases resistance to antibiotics. Tryptophanase and its substrate tryptophan have been recognized as signal molecules regulating bacterial biofilm formation.
View Article and Find Full Text PDFComparison of different freezing rates on post-thaw viability, proliferation, and stemness of sheep spermatogonial stem cells.
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Animal Physiology Division, ICAR-National Institute of Animal Nutrition and Physiology, Adugodi, Bangalore, India-560030.
The application of spermatogonial stem cells (SSC) will be more effective and feasible following the successful cryopreservation and transfer of SSCs in livestock. Like other cells, SSCs are also sensitive to cryoinjury; hence composition of the cryomedia and freezing protocols need to be optimized. The present study aims to optimising the best freezing rates by minimising the ice crystallization and dehydration effect in order to maximize the post-thaw SSCs survivability and stemness characteristics.
View Article and Find Full Text PDFStructural and functional analysis of SAM-dependent N-methyltransferases involved in ovoselenol and ovothiol biosynthesis.
Structure
January 2025
Department of Chemistry, Emory University, Atlanta, GA 30322, USA. Electronic address:
Thio/selenoimidazole Nπ-methyltransferases are an emerging family of enzymes catalyzing the final step in the production of the S/Se-containing histidine-derived antioxidants ovothiol and ovoselenol. These enzymes, prevalent in prokaryotes, show minimal sequence similarity to other methyltransferases, and the structural determinants of their reactivities remain poorly understood. Herein, we report ligand-bound crystal structures of OvsM from the ovoselenol pathway as well as a member of a previously unknown clade of standalone ovothiol-biosynthetic Nπ-methyltransferases, which we have designated OvoM.
View Article and Find Full Text PDFLattice coherency engineering trigger rapid charge transport at the heterointerface of Te/InO@MXene photocatalysts for boosting photocatalytic hydrogen evolution.
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College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, PR China; Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals, Qiqihar University, Qiqihar 161006, PR China. Electronic address:
The establishment of heterojunctions has been demonstrated as an effective method to improve the efficiency of photocatalytic hydrogen production. Conventional heterojunctions usually have random orientation relationships, and heterointerfaces can hinder photogenerated carrier transport due to larger lattice mismatches, thus reducing the photoelectric conversion efficiency. In this study, a novel Te/InO@MXene lattice coherency heterojunction was prepared by leveraging the identical lattice spacing of InO (222) and Te (021) crystal face.
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