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Synthesis of α,β-Unsaturated Carbonyl Compounds via Cu/TEMPO/O2 Aerobic Catalytic System.
Chemistry
January 2025
Shihezi University, School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, North 4th Road, 832003, Shihezi, CHINA.
An N,N,N-type Cu(Ⅱ) complex-catalyzed desaturation method for converting alcohols, ketones, lactones, and lactams to their α,β-unsaturated carbonyl compounds is reported. The dehydrogenation reaction can be conducted with a green terminal oxidant O2 without requiring strong acid/base or stoichiometric oxidants. The Cu(Ⅱ) complex/TEMPO/O2 system uses a non-noble catalyst, and a green terminal oxidant as well as demonstrates high activity and functional group tolerance.
View Article and Find Full Text PDFUltrafast enzyme-responsive hydrogel for real-time assessment and treatment optimization in infected wounds.
J Nanobiotechnology
January 2025
Department of Laboratory Medicine Center, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Guangzhou Medical University, Qingyuan, Guangdong, China.
Monitoring wound infection and providing appropriate treatment are crucial for achieving favorable outcomes. However, the time-consuming nature of laboratory culture tests may delay timely intervention. To tackle this challenge, a simple yet effective HDG hydrogel, composed of hydrogen peroxide (H₂O₂), dopamine, and GelMA polymer, is developed for the ultrafast detection and treatment of Staphylococcus aureus (SA) infections.
View Article and Find Full Text PDFTriacylglycerol mobilization underpins mitochondrial stress recovery.
Nat Cell Biol
January 2025
Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, MO, USA.
Mitochondria are central to myriad biochemical processes, and thus even their moderate impairment could have drastic cellular consequences if not rectified. Here, to explore cellular strategies for surmounting mitochondrial stress, we conducted a series of chemical and genetic perturbations to Saccharomyces cerevisiae and analysed the cellular responses using deep multiomic mass spectrometry profiling. We discovered that mobilization of lipid droplet triacylglycerol stores was necessary for strains to mount a successful recovery response.
View Article and Find Full Text PDFOtolith chemistry suggests population heterogeneity within a genetically homogeneous Indian scad population along Indian coast.
Sci Rep
January 2025
Marine Biotechnology Fish Nutrition and Health Division, ICAR-Central Marine Fisheries Research Institute, Ernakulam North P O, Kochi, Kerala, 682018, India.
The Indian scad, Decapterus russelli is one of the most exploited pelagic resources of India. Population genetic analyses using mitochondrial and nuclear markers indicated a lack of genetic structuring among populations from Indian waters. As this species is highly migratory, it is also important to establish the environmental influence on its population structure.
View Article and Find Full Text PDFArtificial metalloenzyme assembly in cellular compartments for enhanced catalysis.
Nat Chem Biol
January 2025
State Key Laboratory of Chemo/Biosensing and Chemometrics and School of Chemistry and Chemical Engineering, Hunan University, Changsha, China.
Artificial metalloenzymes (ArMs) integrated within whole cells have emerged as promising catalysts; however, their sensitivity to metal centers remains a systematic challenge, resulting in diminished activity and turnover. Here we address this issue by inducing in cellulo liquid-liquid phase separation through a self-labeling fusion protein, HaloTag-SNAPTag. This strategy creates membraneless, isolated liquid condensates within Escherichia coli as protective compartments for the assembly of ArMs using the same fusion protein.
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