News tagged with yeast

Related topics: genes , protein , yeast cells , model organism , cells

Blood test for yeast infections approved

(HealthDay)—The first blood test to detect five strains of yeast that cause rare blood infections in people with weakened immune systems has been approved by the U.S. Food and Drug Administration.

Sep 23, 2014
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Penn yeast study identifies novel longevity pathway

Ancient philosophers looked to alchemy for clues to life everlasting. Today, researchers look to their yeast. These single-celled microbes have long served as model systems for the puzzle that is the aging ...

May 08, 2014
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Yeast provides genetic clues on drug response

Why do people respond differently to the same drug? For the first time, researchers have untangled genetic and environmental factors related to drug reactions, bringing us a step closer to predicting how a drug will affect ...

Apr 10, 2014
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Tretten approved for genetic clotting disorder

(HealthDay)—Tretten (coagulation factor XIII A-Subunit recombinant) has been approved by the U.S. Food and Drug Administration to treat a very rare blood clotting disorder called congenital Factor XIII A-Subunit deficiency.

Dec 23, 2013
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Mitochondria separate their waste

In order to protect themselves from harmful substances, cells need to keep the mitochondria - the boiler room, so to speak - shipshape. Up to now, it was unclear whether this housekeeping work involves sorting ...

Nov 29, 2013
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The skinny on fat and cholesterol

Last week, the Food and Drug Administration proposed banning transfat—partially hydrogenated oil—from restaurants and grocery shelves because it raises bad cholesterol and lowers good cholesterol, contributing to heart ...

Nov 18, 2013
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Yeast

Yeasts 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.

This text uses material from Wikipedia licensed under CC BY-SA