Although the incidence and mortality of SARS-CoV-2 infection has been declining during the pandemic, the problem related to designing novel antiviral drugs that could effectively resist viruses in the future remains relevant. As part of our continued search for chemical compounds that are capable of exerting an antiviral effect against the SARS-CoV-2 virus, we studied the ability of triterpenic acid amides to inhibit the SARS-CoV-2 main protease. Molecular modeling suggested that the compounds are able to bind to the active site of the main protease via non-covalent interactions. The FRET-based enzyme assay was used to reveal that compounds and can inhibit the SARS-CoV-2 main protease at micromolar concentrations.
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http://dx.doi.org/10.3390/molecules28010303 | DOI Listing |
ACS Catal
December 2024
Departments of Biochemistry and Biophysics, Texas A&M University, College Station, Texas 77843, United States.
The 3-chymotrypsin-like protease (3CL-PR; also known as Main protease) of SARS-CoV-2 is a cysteine protease that is the target of the COVID-19 drug, Paxlovid. Here, we report for 3CL-PR, the pH-rate profiles of a substrate, an inhibitor, affinity agents, and solvent kinetic isotope effects (sKIEs) obtained under both steady-state and pre-steady-state conditions. "Bell-shaped" plots of log( / ) vs pH for the substrate (Abz)SAVLQ*SGFRK(Dnp)-NH and p vs pH for a peptide aldehyde inhibitor demonstrated that essential acidic and basic groups of p = 8.
View Article and Find Full Text PDFiScience
December 2024
Institute of Biochemistry and Molecular Biology I, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University Düsseldorf, 40225 Duesseldorf, Germany.
The MICOS complex, essential for cristae organization, comprises MIC10 and MIC60 subcomplexes, with MIC13 as a crucial subunit. mutations cause severe mitochondrial hepato-encephalopathy, cristae defects, and MIC10-subcomplex loss. We demonstrate that depletion of the mitochondrial protease YME1L in KO stabilizes MIC10-subcomplex, restoring MIC60-MIC10 interaction and crista junction (CJ) defects, indicating MIC13 is crucial for MIC10-subcomplex stabilization rather than MIC60-MIC10 bridging.
View Article and Find Full Text PDFArch Dermatol Res
December 2024
Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, Shannxi, China.
Lipid metabolism disorders are frequently noted in atopic dermatitis (AD) patients, prompting the long-term use of lipid-lowering drugs. However, the causal effects of circulating lipids and different lipid-lowering drugs on the risk of AD are not thoroughly understood. Using publicly available genome-wide association studies (GWAS) summary data from two different cohorts, a series of Mendelian randomization (MR) analyses were conducted to explore the causal effects of genetically proxied circulating lipids and lipid-lowering drugs on the risk of AD.
View Article and Find Full Text PDFInt J Nanomedicine
December 2024
Division of Medical Physics and Biophysics, Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Medical University of Graz, Graz, 8010, Austria.
Background: Selenium (Se) is a vital micronutrient for maintaining homeostasis in the human body. Selenium nanoparticles (SeNPs) have demonstrated improved bioavailability compared to both inorganic and organic forms of Se. Therefore, supplementing with elemental Se in its nano-form is highly promising for biomedical applications related to Se deficiency.
View Article and Find Full Text PDFBMC Microbiol
December 2024
School of Life Science, Yunnan Normal University, Kunming, 650500, China.
Background: As an important prokaryotic model organism, Bacillus subtilis has been widely used in the industrial production of a variety of target products. The efficient secretion of target products has always been the main purpose of industrial microbial technology. The modification of gene regulatory networks is an important technical means to construct a factory of microbial cells that efficiently secretes target products.
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