A dinuclear Pb(ii) mesocate has been prepared with an unprecedented four-coordinated kernel in which the Pb(ii) lone pair is stereochemically active. This is the first time that this effect has been observed in a supramolecular Pb(ii) helicate or meso-helicate.
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http://dx.doi.org/10.1039/c6dt03106d | DOI Listing |
Genes (Basel)
December 2024
Department of Genetics and Biotechnology, Ivan Franko National University of Lviv, 79005 Lviv, Ukraine.
Background: Glycopeptide antibiotics (GPAs) are a very successful class of clinically relevant antibacterials, used to treat severe infections caused by Gram-positive pathogens, e.g., multidrug resistant and methicillin-resistant staphylococci.
View Article and Find Full Text PDFSpectrochim Acta A Mol Biomol Spectrosc
December 2024
Institute for Theoretical and Applied Electromagnetics RAS, Moscow 125412, Russia; Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region 141700, Russia.
In this study, we have investigated the surface-enhanced Raman scattering (SERS) spectra of myoglobin on silver substrates with different morphology. The aim was to determine the optimal parameters of analyte and substrate preparation for obtaining of high-amplitude SERS spectra of proteins. It is shown that not only the morphology of the silver film, but also the method of analyte molecules deposition on the SERS substrate plays an important role.
View Article and Find Full Text PDFInorg Chem
December 2024
Institute of Chemistry, Hebrew University of Jerusalem, Jerusalem 9190401, Israel.
Thioxanthone (TX) molecules and their derivatives are well-known photoactive compounds. Yet, there exist only a handful of luminescent systems combining TX with transition metals. Recently, we reported a TX-based PSP pincer ligand () that appears as a promising platform for filling this niche.
View Article and Find Full Text PDFMitosis in eukaryotes involves reorganization of the nuclear envelope (NE) and microtubule-organizing centres (MTOCs). In , the causative agent of malaria, male gametogenesis mitosis is exceptionally rapid and divergent. Within 8 minutes, the haploid male gametocyte genome undergoes three replication cycles (1N to 8N), while maintaining an intact NE.
View Article and Find Full Text PDFAn unusual family of bifunctional terpene synthases has been discovered in which both catalytic domains - a prenyltransferase and a cyclase - are connected by a long, flexible linker. These enzymes are unique to fungi and catalyze the first committed steps in the biosynthesis of complex terpenoid natural products: the prenyltransferase assembles 5-carbon precursors to form C geranylgeranyl diphosphate (GGPP), and the cyclase converts GGPP into a polycyclic hydrocarbon product. Weak domain-domain interactions as well as linker flexibility render these enzymes refractory to crystallization and challenge their visualization by cryo-EM.
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