The Gas family of β-1,3-glucanosyltransferases modify the cell wall by elongating β-1,3-glucan chains. While cells are inviable under standard laboratory growth conditions, they are viable in the presence of an osmotic stabilizer. Even under these conditions however, cells are slow-growing and display cell separation and morphology defects. Here, we isolated and characterized two temperature-sensitive alleles. Our data support that Gas1 is the primary β-1,3-glucanosyltransferase important for cell separation and cell viability and provide useful tools for further analysis of cell wall formation.
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http://dx.doi.org/10.17912/micropub.biology.001144 | DOI Listing |
J Virol
December 2024
Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, New York, USA.
Unlabelled: The therapeutic potential of gene editing technologies hinges on the development of safe and effective delivery methods. In this study, we developed a temperature-sensitive and less immunogenic Sendai virus (ts SeV) as a novel delivery vector for CRISPR-Cas9 and for efficient gene editing in sensitive human cell types with limited induction of an innate immune response. ts SeV demonstrates high transduction efficiency in human CD34 hematopoietic stem and progenitor cells (HSPCs) including transduction of the CD34/CD38/CD45RA/CD90(Thy1)/CD49f stem cell enriched subpopulation.
View Article and Find Full Text PDFbioRxiv
October 2024
Division of Allergy, Immunology and Rheumatology, Department of Pediatrics, University of California-San Diego, La Jolla, CA 92093.
The mutants designated (cell lysis) cause cell lysis at elevated temperatures. The mutation, previously localized to an 80 kilobase region between and on the right arm of chromosome VII, has been used for mutation mapping and in recombination assays, but its genetic identity has remained unknown. Whole genome sequencing of mutant and wild-type strains revealed four missense mutations specific to the mutant strain in the - interval, three of these missense mutations affected essential genes.
View Article and Find Full Text PDFSci Rep
October 2024
Department of Genetics, Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, Dubravska cesta 9, Bratislava, 845 05, Slovakia.
In eukaryotes, chromosomal DNA is equally distributed to daughter cells during mitosis, whereas the number of chromosomes is halved during meiosis. Despite considerable progress in understanding the molecular mechanisms that regulate mitosis, there is currently a lack of complete understanding of the molecular mechanisms regulating meiosis. Here, we took advantage of the fission yeast Schizosaccharomyces pombe, for which highly synchronous meiosis can be induced, and performed quantitative proteomics and phosphoproteomics analyses to track changes in protein expression and phosphorylation during meiotic divisions.
View Article and Find Full Text PDFArch Microbiol
September 2024
Department of Molecular Biology, School of Biological Sciences, Madurai Kamaraj University, Madurai, 625 021, India.
The originally identified transcription-defective fitA76 temperature-sensitive (Ts) mutation defined an allele of pheS. Both fitA/pheS and fitB/pheT were previously proposed to function as transcription factors. Sequencing pheS region of the fitA76 mutant revealed the same G→A transition found in the translation-defective pheS5 mutant.
View Article and Find Full Text PDFCurr Issues Mol Biol
June 2024
Guangxi Key Laboratory of Rice Genetics and Breeding, Rice Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China.
Chloroplasts are organelles responsible for photosynthesis in plants, providing energy for growth and development. However, the genetic regulatory mechanisms underlying early chloroplast development in rice remain incompletely understood. In this study, we identified a rice seedling thermosensitive chlorophyll-deficient mutant, , and the genetic analysis of two F populations suggested that this trait may be controlled by more than one pair of alleles.
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