It has been shown that heterologous aminoacylation of tRNA by tyrosyl-tRNA synthetase leads to inactivation of the enzyme. Inorganic pyrophosphatase prevents the inactivation and increases the enzyme activity and aminoacylation level in a heterologous system. A putative inactivation mechanism is discussed.
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Biomacromolecules
January 2025
Laboratory for Nonnatural Amino Acid Technology, RIKEN Center for Biosystems Dynamics Research, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan.
Silk fiber, produced by the silkworm , is a protein fiber with an excellent mechanical strength and broad biocompatibility. Multiple approaches, including genetic and chemical methods, must be combined to tailor silk fiber properties for wide applications, such as textiles and biomaterials. Genetic code expansion (GCE) is an alternative method to alter proteins' chemical and physical properties by incorporating synthetic amino acids into their primary structures.
View Article and Find Full Text PDFMolecules
December 2024
Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale delle Scienze, 90128 Palermo, Italy.
Molecular hybridization, which consists of the combination of two or more pharmacophores into a single molecule, is an innovative approach in drug design to afford new chemical entities with enhanced biological activity. In the present study, this strategy was pursued to develop a new series of 6,7-dimethoxy-4-piperazinylquinoline-3-carbonitrile derivatives (-) with potential antibiotic activity by combining the quinoline, the piperazinyl, and the benzoylamino moieties, three recurrent frameworks in antimicrobial research. Initial in silico evaluations were conducted on the designed compounds, highlighting favorable ADMET and drug-likeness properties, which were synthesized through a multistep strategy, isolated, and fully characterized.
View Article and Find Full Text PDFJ Dairy Sci
January 2025
College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, Shandong, China; Bathurst Future Agri-Tech Institute, Qingdao Agricultural University, Qingdao, 266109, Shandong, China. Electronic address:
The growth and reproduction of microorganisms are dependent on nutrient supply. Here, Milk and LB media were utilized as nutrition sources for Escherichia coli, and the changes in bacterial and secretory proteins at 3 time points (3, 9, and 18 h) in the growth cycle were studied using a label-free proteomics technique. The findings revealed that the abundances of bacterial intracellular proteins inosine/xanthosine triphosphatase and universal stress protein F increase dramatically during the growth phase in milk and LB media.
View Article and Find Full Text PDFPharmaceuticals (Basel)
December 2024
Department of Biology, College of Science, Qassim University, Buraydah 51452, Saudi Arabia.
In Saudi Arabia, numerous plant species with promising medicinal properties are cultivated, widely traded, and commonly utilized in traditional medicine, including fenugreek (). This study aimed to comprehensively assess the phytochemical composition and antimicrobial potential of the Saudi cultivar of fenugreek using an integrative approach combining in vitro and in silico methodologies. A comprehensive investigation was conducted on the ethanol extract of fenugreek seeds, assessing its antibacterial, antifungal, properties.
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