The lytic polysaccharide monooxygenase <i>Jd</i>LPMO10A is the N-terminal domain of the multimodular protein Jd1381. The isolated <i>Jd</i>LPMO10A domain is one of the smallest chitin-active lytic polysaccharide monooxygenases known to date with a size of only 15.5 kDa. <i>Jd</i>LPMO10A is a copper-dependent oxidative enzyme that depolymerizes chitin by hydroxylating the C1 carbon in the glycosidic ...

As part of our efforts to develop rhenium-oxo corroles as photosensitizers for oxygen sensing and photodynamic therapy, we investigated the potential <i>β</i>-perhalogenation of five ReO <i>meso</i>-tris(<i>para</i>-X-phenyl)corroles, Re[T<i>p</i>XPC](O) (X = CF₃, H, F, CH₃, and OCH₃), with elemental chlorine and bromine. With Cl₂, <i>β</i>-octachlorinated ...

A description of the new air quality downscaling model – the urban EMEP (uEMEP) and its combination with the EMEP MSC-W model (European Monitoring and Evaluation Programme Meteorological Synthesising Centre West) – is presented. uEMEP is based on well-known Gaussian modelling principles. The uniqueness of the system is in its combination with the EMEP MSC-W model and the “local fraction” calculation ...

<i>Background</i> - <i>Para</i>-nitrophenyl phosphate, the common substrate for alkaline phosphatase (AP), is available as a cyclohexylamine salt. Here, we report that cyclohexylamine is a non-competitive inhibitor of APs.<br><br> <i>Methods</i> - Cyclohexylamine inhibited four different APs. Co-crystallization with the cold-active <i>Vibrio</i> AP (VAP) was performed and the structure solved.<br><br> ...

A mild, green and highly efficient protocol was developed for the synthesis of substituted phenols via <i>ipso</i>-hydroxylation of arylboronic acids in ethanol. The method utilizes the combination of aqueous hydrogen peroxide as the oxidant and H₂O₂/HBr as the reagent under unprecedentedly simple and convenient conditions. A wide range of arylboronic acids were smoothly ...

¹H NMR spectroscopy has become an important technique for the characterization of transition-metal hydride complexes, whose metal-bound hydrides are often difficult to locate by X-ray diffraction. In this regard, the accurate prediction of ¹H NMR chemical shifts provides a useful, but challenging, strategy to help in the interpretation of the experimental spectra. In this work, ...

Chitin is one of the most abundant renewable organic materials found on earth. The chitin utilization locus in <i>Flavobacterium johnsoniae</i>, which encodes necessary proteins for complete enzymatic depolymerization of crystalline chitin, has recently been characterized but no detailed structural information on the enzymes was provided. Here we present protein structures of the <i>F. johnsoniae</i> ...

Drug discovery and refinement for use in the industry is an important and lucrative field within chemistry. In this regard, computational chemistry has shown to be a valuable tool in assisting drug discovery. A set of intriguing proteins used in drug discovery are cold-adapted enzymes. These enzymes have a lower activation point which makes them of interest in industrial use. In this study, the ...

<i>Background</i> - The genome of <i>Vibrionaceae</i> bacteria, which consists of two circular chromosomes, is replicated in a highly ordered fashion. In fast-growing bacteria, multifork replication results in higher gene copy numbers and increased expression of genes located close to the origin of replication of Chr 1 (<i>ori1</i>). This is believed to be a growth optimization strategy to satisfy ...

Six-coordinate iridium(III) triarylcorrole derivatives, Ir[T<i>p</i>XPC)]L₂, where T<i>p</i>XPC = tris(<i>para</i>-X-phenyl)corrole (X = CF₃, H, Me, and OCH₃) and L = pyridine (py), trimethylamine (tma), isoquinoline (isoq), 4-dimethylaminopyridine (dmap), and 4-picolinic acid (4pa), have been examined, with a view to identifying axial ligands most conducive to ...