Small molecules are components of fungal extracellular vesicles (EVs), but their biological roles are only superficially known. is a eukaryotic gene that is required for the activity of benzimidazoles against . In this study, during the phenotypic characterization of mutants expected to lack expression, we observed a reduced EV production. Whole-genome sequencing, RNA-Seq, and cellular proteomics revealed that, contrary to our initial findings, these mutants expressed Nop16 but exhibited altered expression of 14 genes potentially involved in sugar transport. Based on this observation, we designated these mutant strains as Past1 and Past2, representing otentially ltered ugar ransport. Analysis of the small molecule composition of EVs produced by wild-type cells and the Past1 and Past2 mutant strains revealed not only a reduced number of EVs but also an altered small molecule composition. In a model of infection, the Past1 and Past2 mutant strains were hypovirulent. The hypovirulent phenotype was reverted when EVs produced by wild-type cells, but not mutant EVs, were co-injected with the mutant cells in . These results connect EV biogenesis, cargo, and cryptococcal virulence.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11003230 | PMC |
http://dx.doi.org/10.1128/iai.00037-24 | DOI Listing |
J Agric Food Chem
January 2025
College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, China.
Phytoene synthase (PSY) is one of key enzymes in carotenogenesis that catalyze two molecules of geranylgeranyl diphosphate to produce phytoene. PSY is widespread in bacteria, archaea, and eukaryotes. Currently, functional role and catalytic mechanism of archaeal PSY homologues have not been fully clarified due to the limited reports.
View Article and Find Full Text PDFChembiochem
January 2025
Jiangnan University, State Key Laboratory of Food Science and Technology, 1800 Lihu Road, Wuxi, China, 214122, Wuxi, CHINA.
Indigo is widely used in dyes, medicines and semiconductors materials due to its excellent dyeing efficiency, antibacterial, antiviral, anticancer, anti-corrosion, and thermostability properties. Here, a biosynthetic pathway for indigo was designed, integrating two enzymes (EcTnaA, MaFMO) into a higher L-tryptophan-producing the strain Escherichia coli TRP. However, the lower catalytic activity of MaFMO was a bottleneck for increasing indigo titers.
View Article and Find Full Text PDFSci Rep
January 2025
Hubrecht Institute-KNAW and University Medical Center Utrecht, Utrecht, The Netherlands.
Pseudomonas aeruginosa is a Gram-negative bacterium that is notorious for airway infections in cystic fibrosis (CF) subjects. Bacterial quorum sensing (QS) coordinates virulence factor expression and biofilm formation at population level. Better understanding of QS in the bacterium-host interaction is required.
View Article and Find Full Text PDFJ Insect Physiol
January 2025
College of Plant Protection, Northwest A&F University, Yangling 712100, China.
Ambient hypoxia can pose a major threat to the survival of metazoan organisms, especially insect embryos. Hemocyanin exhibits dominant expression in insect embryos, but its specific roles in hypoxia adaptation remain unexplored. Soil-dwelling locust eggs may frequently experience hypoxia during development.
View Article and Find Full Text PDFInsect Sci
January 2025
Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, Biological Science Research Center, Southwest University, Chongqing, China.
Respiration is a vital process essential for organism survival, with most terrestrial insects relying on a sophisticated tubular tracheal network. In the current study, a gene with repetitive sequence was identified within the silkworm genome. Designated as BmMuc91C, it contains a dozen repeated motifs "PSSSYGAPX" and "GGYSSGGX" in its sequence.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!