Integration of experimental studies with mathematical modeling allows insight into systems properties, prediction of perturbation effects and generation of hypotheses for further research. We present a comprehensive mathematical description of the cellular response of yeast to hyperosmotic shock. The model integrates a biochemical reaction network comprising receptor stimulation, mitogen-activated protein kinase cascade dynamics, activation of gene expression and adaptation of cellular metabolism with a thermodynamic description of volume regulation and osmotic pressure. Simulations agree well with experimental results obtained under different stress conditions or with specific mutants. The model is predictive since it suggests previously unrecognized features of the system with respect to osmolyte accumulation and feedback control, as confirmed with experiments. The mathematical description presented is a valuable tool for future studies on osmoregulation in yeast and-with appropriate modifications-other organisms. It also serves as a starting point for a comprehensive description of cellular signaling.
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http://dx.doi.org/10.1038/nbt1114 | DOI Listing |
Curr Microbiol
January 2025
Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Cairo, 11566, Egypt.
Fortimicins (FTMs) are fortamine-containing aminoglycoside antibiotics (AGAs) produced by M. olivasterospora DSM 43868 with excellent bactericidal activities against a wide range of Enterobacteriaceae and synergistic activity against multidrug-resistant (MDR) pathogens. Fortimicin-A (FTM-A), the most active member of FTMs, has the lowest susceptibility to inactivation by the aminoglycoside modifying enzymes (AMEs).
View Article and Find Full Text PDFJ Enzyme Inhib Med Chem
December 2025
Laboratory of Biochemistry and Molecular Biology, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy.
Antibiotic resistance stands as the foremost post-pandemic threat to public health. The urgent need for new, effective antibacterial treatments is evident. Protein-protein interactions (PPIs), owing to their pivotal role in microbial physiology, emerge as novel and attractive targets.
View Article and Find Full Text PDFFront Vet Sci
December 2024
College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China.
During the late laying period, the intestinal barrier of laying hens is susceptible to damage, resulting in enteric infections and even systemic inflammatory responses, posing a major challenge for the poultry industry. Therefore, it is crucial to investigate methods for addressing intestinal inflammation in late laying hens. In order to maximize the production potential of egg laying chickens, farmers usually use various feed additives to prevent damage to the intestinal barrier.
View Article and Find Full Text PDFJ Zhejiang Univ Sci B
April 2024
Department of Biochemistry, and Department of Hepatobiliary and Pancreatic Surgery of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China.
Int J Biol Macromol
December 2024
Key laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-bioengineering, Guizhou University, Guiyang 550025, Guizhou Province, China; College of Agriculture, Guizhou Engineering Research Center for Fruit Crops, Guizhou University, Guiyang 550025, Guizhou Province, China. Electronic address:
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