Related topics: genes , protein , yeast cells
Yeast
hideYeasts are eukaryotic microorganisms classified in the kingdom Fungi, with about 1,500 species currently described; they dominate fungal diversity in the oceans. Most reproduce asexually by budding, although a few do so by binary fission. Yeasts are unicellular, although some species with yeast forms may become multicellular through the formation of a string of connected budding cells known as pseudohyphae, or false hyphae as seen in most molds. Yeast size can vary greatly depending on the species, typically measuring 3–4 µm in diameter, although some yeasts can reach over 40 µm.
The yeast species Saccharomyces cerevisiae has been used in baking and fermenting alcoholic beverages for thousands of years. It is also extremely important as a model organism in modern cell biology research, and is one of the most thoroughly researched eukaryotic microorganisms. Researchers have used it to gather information about the biology of the eukaryotic cell and ultimately human biology. Other species of yeast, such as Candida albicans, are opportunistic pathogens and can cause infections in humans. Yeasts have recently been used to generate electricity in microbial fuel cells, and produce ethanol for the biofuel industry.
Yeasts do not form a specific taxonomic or phylogenetic grouping. At present it is estimated that only 1% of all yeast species have been described. The term "yeast" is often taken as a synonym for S. cerevisiae, but the phylogenetic diversity of yeasts is shown by their placement in both divisions Ascomycota and Basidiomycota. The budding yeasts ("true yeasts") are classified in the order Saccharomycetales.
For more information about Yeast, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with yeast
Within a cell, actin keeps things moving
Dec 17, 2009 |
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(PhysOrg.com) -- Using new technology developed in his University of Oregon lab, chemist Andrew H. Marcus and his doctoral student Eric N. Senning have captured what they describe as well-orchestrated, actin-driven, ...
Newly discovered mechanism allows cells to change state
Dec 09, 2009 |
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Cells are not static. They can transform themselves over time — but change can have dangerous implications. Benign cells, for example, can suddenly change into cancerous ones.
Geneticist reveals molecular view of key epigenetic regulator
Dec 09, 2009 |
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In a paper published this week in the journal Proceedings of the National Academy of Sciences, Dr. Michael Kobor reported the structure and function of a key player in regulating chromatin in yeast and humans.
Superior offspring without genetic modification
Dec 08, 2009 |
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We don't always turn out like our parents. Sometimes we become even better. How this happens is the subject of a new research project at the University of Gothenburg.
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Green tea chemical combined with another may hold promise for treatment of brain disorders
Dec 03, 2009 |
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Scientists at Boston Biomedical Research Institute (BBRI) and the University of Pennsylvania have found that combining two chemicals, one of which is the green tea component EGCG, can prevent and destroy a variety of protein ...
Knockouts in human cells point to pathogenic targets
Nov 26, 2009 |
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(PhysOrg.com) -- Whitehead researchers have developed a new approach for genetics in human cells and used this technique to identify specific genes and proteins required for pathogens.
Understanding DNA Repair and Cancer
Dec 03, 2009 |
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(PhysOrg.com) -- A protein that plays a key role in copying DNA also plays a vital role in repairing breaks in it, UC Davis scientists have found. The work is helping researchers understand how cancer cells can resist radiation ...
Balancing protein intake, not cutting calories, may be key to long life
Dec 02, 2009 |
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Getting the correct balance of proteins in our diet may be more important for healthy ageing than reducing calories, new research funded by the Wellcome Trust and Research into Ageing suggests.
Drug kills cells through novel mechanism
Dec 10, 2009 |
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MIT and Boston University researchers have discovered that the drug hydroxyurea kills bacteria by inducing them to produce molecules toxic to themselves — a conclusion that raises the possibility of finding ...
Fungal footage fosters foresight into plant, animal disease (w/ Video)
Dec 22, 2009 |
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Mold and mildew may be doomed. Researchers are closer to understanding how these and other fungi grow. "Fungi have a big impact on our dinner plate," said Dr. Brian Shaw, Texas AgriLife Research plant pathologist. "We tend ...
Suzaku spies treasure trove of intergalactic metal
Dec 02, 2009 |
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Every cook knows the ingredients for making bread: flour, water, yeast, and time. But what chemical elements are in the recipe of our universe?
Stopping MRSA before it becomes dangerous is possible, researchers find
Dec 03, 2009 |
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Most scientists believe that staph infections are caused by many bacterial cells that signal each other to emit toxins. The signaling process is called quorum sensing because many bacteria must be present ...
Critical protein helps mend damaged DNA
Dec 24, 2009 |
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In order to preserve our DNA, cells have developed an intricate system for monitoring and repairing DNA damage. Yet precisely how the initial damage signal is converted into a repair response remains unclear. Researchers ...
Scientists show how ubiquitin chains are added to cell-cycle proteins
Dec 02, 2009 |
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Researchers from the California Institute of Technology (Caltech) have been able to view in detail, and for the first time, the previously mysterious process by which long chains of a protein called ubiquitin ...
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