scholarly journals Studies on enzyme lysing yeast cell from Oerskovia sp. CK. VI. The synergistic effects among .BETA.-1,3-glucanases from Oerskovia sp. CK on lysis of viable yeast cells.

1977 ◽  
Vol 41 (4) ◽  
pp. 671-677 ◽  
Author(s):  
Takaji OBATA ◽  
Ken FUJIOKA ◽  
Shodo HARA ◽  
Yasunosuke NAMBA
Keyword(s):  
Yeast Cell ◽  
Synergistic Effects ◽  
Yeast Cells

scholarly journals Optimizing Transformation Frequency of Cryptococcus neoformans and Cryptococcus gattii Using Agrobacterium tumefaciens

2021 ◽  
Vol 7 (7) ◽  
pp. 520
Author(s):  
Jianmin Fu ◽  
Nohelli E. Brockman ◽  
Brian L. Wickes
Keyword(s):  
Agrobacterium Tumefaciens ◽  
Yeast Cell ◽  
Transformation Efficiency ◽  
Transformation Frequency ◽  
Yeast Cells ◽  
Agar Concentration ◽  
Genetic Tool ◽  
Number Of Factors ◽  
Cryptococcus Spp ◽  
Transformation Systems

The transformation of Cryptococcus spp. by Agrobacterium tumefaciens has proven to be a useful genetic tool. A number of factors affect transformation frequency. These factors include acetosyringone concentration, bacterial cell to yeast cell ratio, cell wall damage, and agar concentration. Agar concentration was found to have a significant effect on the transformant number as transformants increased with agar concentration across all four serotypes. When infection time points were tested, higher agar concentrations were found to result in an earlier transfer of the Ti-plasmid to the yeast cell, with the earliest transformant appearing two h after A. tumefaciens contact with yeast cells. These results demonstrate that A. tumefaciens transformation efficiency can be affected by a variety of factors and continued investigation of these factors can lead to improvements in specific A. tumefaciens/fungus transformation systems.

scholarly journals Bioaccessibility of curcumin encapsulated in yeast cells and yeast cell wall particles

2020 ◽  
Vol 309 ◽  
pp. 125700 ◽  
Author(s):  
Stephen Young ◽  
Rewa Rai ◽  
Nitin Nitin
Keyword(s):  
Cell Wall ◽  
Yeast Cell ◽  
Yeast Cells ◽  
Yeast Cell Wall

scholarly journals Abundances of transcripts, proteins, and metabolites in the cell cycle of budding yeast reveal coordinate control of lipid metabolism

2020 ◽  
Vol 31 (10) ◽  
pp. 1069-1084 ◽  
Author(s):  
Heidi M. Blank ◽  
Ophelia Papoulas ◽  
Nairita Maitra ◽  
Riddhiman Garge ◽  
Brian K. Kennedy ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Lipid Metabolism ◽  
Cell Division ◽  
Yeast Cell ◽  
Budding Yeast ◽  
Yeast Cells ◽  
Dynamic Changes ◽  
Coordinate Control ◽  
Cycle Dependent ◽  
Budding Yeast Cell Cycle

In several systems, including budding yeast, cell cycle-dependent changes in the transcriptome are well studied. In contrast, few studies queried the proteome during cell division. There is also little information about dynamic changes in metabolites and lipids in the cell cycle. Here, the authors present such information for dividing yeast cells.

Killer Toxins of Yeasts: Inhibitors of Fermentation and Their Adsorption

1987 ◽  
Vol 50 (3) ◽  
pp. 234-238 ◽  
Author(s):  
FERDINAND RADLER ◽  
MANFRED SCHMITT
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Cell Wall ◽  
Yeast Cell ◽  
Cell Walls ◽  
Killer Toxin ◽  
Yeast Cells ◽  
Toxin Concentration ◽  
Commercial Preparation ◽  
Killer Toxins ◽  
Original Amount

The killer toxin (KT 28), a glycoprotein of Saccharomyces cerevisiae strain 28, was almost completely adsorbed by bentonite, when applied at a concentration of 1 g per liter. No significant differences were found between several types of bentonite. Killer toxin KT 28 is similarly adsorbed by intact yeast cells or by a commercial preparation of yeast cell walls that has been recommended to prevent stuck fermentations. An investigation of the cell wall fractions revealed that the toxin KT 28 was mainly adsorbed by mannan, that removed the toxin completely. The alkali-soluble and the alkali-insoluble β-1,3- and β-1,6-D-glucans lowered the toxin concentration to one tenth of the original amount. The killer toxin of the type K1 of S. cerevisiae was adsorbed much better by glucans than by mannan.

Visualizing the intracellular membrane system of yeast cells using a laser scanning confocal microscope

1993 ◽  
Vol 51 ◽  
pp. 274-275
Author(s):  
Karen L. McCoy ◽  
Andrew G. Dillin ◽  
Ardythe A. McCracken
Keyword(s):  
Endoplasmic Reticulum ◽  
Yeast Cell ◽  
Mammalian Cells ◽  
Laser Scanning ◽  
Intracellular Localization ◽  
Fluorescent Microscopy ◽  
Confocal Microscope ◽  
Yeast Cells ◽  
Intracellular Membrane ◽  
Laser Scanning Confocal Microscope

Progress has been made in developing new preparative techniques for electron microscopic visualization of the intracellular structures of yeast. In addition, development of the laser scanning confocal microscope (LSCM) has provided improved resolution for fluorescent microscopy. We asked whether the LSCM in combination with new preparative techniques could be used for comparable investigative research of the intracellular organizaton of the yeast cell.To investigate this possibility, a BioRad MRC600 LSCM equipped with a krypton/argon laser and integrated computer imaging capabilities, was used to study various dipliod strains of the yeast Saccharomyces cerevisiae. Cells were treated with the lipophilic, cationic fluorescent dye DiOC6 (3,3’-dihexyloxacarbocyanine iodide), which has been used to visualize intracellular membrane structures, and in particular the endoplasmic reticulum of mammalian cells and living yeast cells. Since one of our interests is the intracellular localization of proteins in the yeast cell, we utilized transformed yeast cells expressing a human gene encoding a protein that inappropriately accumulates in the endoplasmic reticulum (ER).

Polarization of cell growth in yeast. I. Establishment and maintenance of polarity states

2000 ◽  
Vol 113 (3) ◽  
pp. 365-375 ◽  
Author(s):  
D. Pruyne ◽  
A. Bretscher
Keyword(s):  
Cell Cycle ◽  
Yeast Cell ◽  
Signaling Pathways ◽  
Cell Polarity ◽  
Molecular Mechanisms ◽  
Fundamental Property ◽  
Yeast Cells ◽  
Cell Cortex ◽  
Yeast Saccharomyces Cerevisiae ◽  
Dependent Protein

The ability to polarize is a fundamental property of cells. The yeast Saccharomyces cerevisiae has proven to be a fertile ground for dissecting the molecular mechanisms that regulate cell polarity during growth. Here we discuss the signaling pathways that regulate polarity. In the second installment of this two-part commentary, which appears in the next issue of Journal of Cell Science, we discuss how the actin cytoskeleton responds to these signals and guides the polarity of essentially all events in the yeast cell cycle. During the cell cycle, yeast cells assume alternative states of polarized growth, which range from tightly focused apical growth to non-focused isotropic growth. RhoGTPases, and in particular Cdc42p, are essential to guiding this polarity. The distribution of Cdc42p at the cell cortex establishes cell polarity. Cyclin-dependent protein kinase, Ras, and heterotrimeric G proteins all modulate yeast cell polarity in part by altering the distribution of Cdc42p. In turn, Cdc42p generates feedback signals to these molecules in order to establish stable polarity states and coordinate cytoskeletal organization with the cell cycle. Given that many of these signaling pathways are present in both fungi and animals, they are probably ancient and conserved mechanisms for regulating polarity.

Interaction of Yeast Cells with Nanoparticles - an FTIR Study

2012 ◽  
Vol 14 ◽  
pp. 65-73
Author(s):  
M. K. Mukherjee ◽  
A. Gangopadhyay ◽  
N. Das ◽  
A. Sarkar
Keyword(s):  
Drug Delivery ◽  
Yeast Cell ◽  
Laser Irradiation ◽  
Incubation Temperature ◽  
Agar Medium ◽  
Yeast Cells ◽  
Capping Agent ◽  
Work Samples ◽  
Positive Effect

In the present work, samples were prepared allowing yeast to grow simply on YPDA-agar medium at a particular incubation temperature using streaking procedure. Doped specimens of yeast were prepared using YPDA-agar medium in presence of ZnO and TiO2 nanoparticles in a nutrient medium for yeast. ZnO and TiO2 nanoparticles for delivery over yeast cell were prepared with Gum Arabica and Ethanol (CH3CH2OH) respectively as capping agent. Specimens were also developed by laser irradiation on the ZnO doped nanoclusters and pure yeast. FTIR spectroscopy was employed to investigate the effects of nanoclusters and laser irradiation over yeast cell under different conditions. Application of laser irradiation exhibits some positive effect on pure yeast. Effect of ZnO and TiO2 nanocluster doping on yeast are found to be toxic over Yeast Amide in general. Laser irradiation on nanocluster doped yeast cell enhanced the toxicity of nanoclusters. The later part of this study confirms the destruction of Amides in yeast. This preliminary work is an in-vivo application of drug delivery principle using ZnO nanocluster in Gum Arabica background.

scholarly journals Viability and Versatility of the Yeast Cell

2004 ◽  
Vol 12 (3) ◽  
pp. 30-33
Author(s):  
Michelle J. Henry-Stanley ◽  
Carol L. Wells
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Amino Acids ◽  
Yeast Cell ◽  
Candida Utilis ◽  
Paper Industry ◽  
Yeast Cells ◽  
Distilled Spirits ◽  
Eukaryotic Microorganisms ◽  
Brewers Yeast ◽  
Soil And Water

Yeasts are single-celled eukaryotic microorganisms (generally about 5 to 10 microns in diameter) that divide by a budding process and are classified with the fungi. Yeast cells are ubiquitous in our environment and can be found on plants and in soil and water. Yeasts have considerable importance Ln industrial and agricultural settings,Saccharomyces cerevisiae(Figure 1) is also known as “bakers yeast” or “brewers yeast.” Specific strains of yeast are used to make pastries, bread, beer, ale, wine, distilled spirits, and industrial alcohol. In the paper industry,Candida utilisis used to break down die sugars from processed wood pulp. Yeast cells are also nutritious. In some societies, “cloudy” beer (containing yeast cells) provides essential B vitamins, minerals, and amino acids.

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