The Staphylococcus epidermidis lipase (SeLip, GehC) can be used in flavour-compound production via esterification in aqueous solution. This study reports the crystallization and crystallographic analysis of recombinant GehC (rGehC; Lys303-Lys688) with a molecular weight of 43 kDa. rGehC was crystallized at 293 K using PEG 10 000 as a precipitant, and a 99.9% complete native data set was collected from a cooled crystal at 77 K to a resolution of 1.9 Å with an overall R value of 7.3%. The crystals were orthorhombic and belonged to space group P222, with unit-cell parameters a = 42.07, b = 59.31, c = 171.30 Å, α = β = γ = 90°. Solvent-content calculations suggest that there is likely to be one lipase subunit in the asymmetric unit.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5987743 | PMC |
http://dx.doi.org/10.1107/S2053230X18006775 | DOI Listing |
Phys Chem Chem Phys
January 2025
Kemerovo State University, Krasnaya 6, Kemerovo, 650000, Russia.
The compressibility of crystalline tetrabromophthalic anhydride (TBPA) and 1-ethyl-3-methylimidazolium nitrate (EMN) was studied based on density functional theory including dispersion interactions at pressures below 1 GPa. It is found for the first time that EMN demonstrates negative linear compressibility (NLC) up to ∼0.15 GPa, whereas TBPA shows significant NLC at pressures higher than ∼0.
View Article and Find Full Text PDFJ Adv Res
January 2025
State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Avenida da Universidade, Taipa, Macao 999078, China; Guangdong-Hong Kong-Macau Join Laboratory for Pharmacodynamic Constituents of TCM and New Drugs Research, University of Macau, Avenida da Universidade, Taipa, Macao 999078, China; Department of Pharmaceutical Sciences and Technology, Faculty of Health Sciences, University of Macau, Avenida de Universidade, Taipa, Macao 999078, China. Electronic address:
Introduction: Non-alcoholic fatty liver disease (NAFLD) acts as the primary contributor to non-alcoholic steatohepatitis, fibrosis, cirrhosis, and potentially hepatocellular carcinoma. The flowers of Chrysanthemum indicum, a traditional edible medicinal herb, have been widely used in China for more than 2000 years. However, the function of C.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
Department of Chemical Sciences, University of Naples "Federico II", Via Cintia, 21, 80126 Napoli, Italy; CEINGE Advanced Biotechnologies s.c.a r.l. "Franco Salvatore", Via Gaetano Salvatore 486, 80131 Napoli, Italy. Electronic address:
SARS-CoV-2 encodes a 3C-like protease (3CL) that is essential for viral replication. This cysteine protease cleaves viral polyproteins to release functional nonstructural proteins, making it a prime target for antiviral drug development. We investigated the inhibitory effects of halicin, a known c-Jun N-terminal kinase inhibitor, on 3CL.
View Article and Find Full Text PDFChemistry
January 2025
Yamaguchi University, Department of Chemistry, 753-8512, Yamaguchi, JAPAN.
We report herein the synthesis of an unprecedented isomer of perylene, dicyclohepta[cd,fg]-as-indacene bearing two phenyl groups (1-Ph) by the nickel-mediated intramolecular homocoupling of a 4,4'-biazulene derivative (2). The X-ray crystallographic analysis and theoretical calculations revealed that 1-Ph adopts a unique helically twisted geometry although the local aromaticity of azulene moieties was preserved. The double covalent linkage of the two azulene skeletons imparts significant orbital interaction, which affords near-infrared (NIR) absorption (up to 1720 nm) and remarkable redox behaviors despite its closed-shell electronic structure.
View Article and Find Full Text PDFActa Crystallogr F Struct Biol Commun
February 2025
Graduate School of Life Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo, Hokkaido 060-0810, Japan.
The bacterial enzyme tRNA 2-selenouridine synthase (SelU) catalyzes the conversion of 5-substituted 2-thiouridine (R5S2U) to 5-substituted 2-selenouridine (R5Se2U) at the wobble positions of several tRNAs. Seleno-modification potentially regulates translation efficiency in response to selenium availability. Notably, SelU uses the 2-geranylthiouridine (R5geS2U) intermediate for sulfur removal, and this geranylthiol (geS) is a unique leaving group among tRNA-maturation enzymes.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!