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Biochemical features and biotechnological potential of a proteolytic extract from a psychrophilic Antarctic bacterium.
Braz J Microbiol
January 2025
Laboratorio de Biocatalizadores y sus Aplicaciones, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo, Uruguay.
Proteases are hydrolases that act on peptide bonds, releasing amino acids and/or oligopeptides, and are involved in essential functions in all organisms. They represent an important segment of the global enzyme market, with applications in the food, leather, detergent, and pharmaceutical industries. Depending on their industrial use, proteases should exhibit high activity under extreme conditions, such as low temperatures, e.
View Article and Find Full Text PDFUncovering the naturally occurring covalent inhibitors of SARS-CoV-2 M from the Chinese medicine sappanwood and deciphering their synergistic anti-M effects.
J Ethnopharmacol
January 2025
Center for Clinical Pharmacy, Cancer Center, Department of Pharmacy, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, China, 310014. Electronic address:
Ethnopharmacological Relevance: The Chinese medicine sappanwood is primarily sourced from the dried heartwood of the medicinal plant Caesalpinia sappan Linn., which has been found with a variety of valuable properties including anti-inflammatory, anti-oxidant, and anti-viral effects. Preliminary investigations have demonstrated that sappanwood showed strong anti-SARS-CoV-2 M effects, but the key constituents responsible for SARS-CoV-2 M inhibition and their anti-M mechanisms have not been uncovered.
View Article and Find Full Text PDFBiochemical, structural, and cellular characterization of S-but-3-yn-2-ylglycine as a mechanism-based covalent inactivator of the flavoenzyme proline dehydrogenase.
Arch Biochem Biophys
January 2025
Department of Biochemistry, University of Missouri, Columbia, Missouri 65211, United States; Department of Chemistry, University of Missouri, Columbia, Missouri 65211, United States. Electronic address:
The mitochondrial flavoenzymes proline dehydrogenase (PRODH) and hydroxyproline dehydrogenase (PRODH2) catalyze the first steps of proline and hydroxyproline catabolism, respectively. The enzymes are targets for chemical probe development because of their roles in cancer cell metabolism (PRODH) and primary hyperoxaluria (PRODH2). Mechanism-based inactivators of PRODH target the FAD by covalently modifying the N5 atom, with N-propargylglycine (NPPG) being the current best-in-class of this type of probe.
View Article and Find Full Text PDFGlucocorticoid Resistance Syndrome in 2 Patients With Diverse Genotype.
JCEM Case Rep
February 2025
University of Utah Health, Division of Endocrinology, Salt Lake City, UT 84108, USA.
Glucocorticoid resistance syndrome (GRS) is caused by inactivating pathogenic variants in the glucocorticoid receptor gene . Reduced glucocorticoid receptor signaling leads to decreased tissue sensitivity to cortisol and resultant biochemical hypercortisolism without the classic clinical features of Cushing syndrome. Patients variably present with signs and symptoms of mineralocorticoid and androgen excess from ACTH overstimulation of the adrenal cortex.
View Article and Find Full Text PDFSignal Transduction of Constitutive Activating and Inactivating Eel Lutropin/Choriogonadotropin Receptor (Eel LH/CGR) Mutants by Recombinant Equine Chorionic Gonadotropin (Rec-eCG).
Dev Reprod
December 2024
Carbon-Neutral Resources Research Center, Institute of Genetic Engineering, Hankyong National University, Anseong 17579, Korea.
Lutropin/choriogonadotropin receptor (LH/CGR) is a member of the G protein-coupled receptor superfamily. LH/CGRs in fish and mammalian species have been reported to contain naturally occurring, constitutively activating, and inactivating mutations in highly conserved regions. The present study was designed to determine the functional aspect of eel LH/CGR signal transduction.
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