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ergosterol

American  
[ur-gos-tuh-rohl, -rawl] / ɜrˈgɒs təˌroʊl, -rɔl /

noun

Biochemistry.
  1. a colorless, crystalline, water-insoluble sterol, C 28 H 43 OH, that occurs in ergot and yeast and that, when irradiated with ultraviolet light, is converted to vitamin D.


ergosterol British  
/ ɜːˈɡɒstəˌrɒl /

noun

  1. a plant sterol that is converted into vitamin D by the action of ultraviolet radiation. Formula: C 28 H 43 OH

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of ergosterol

First recorded in 1885–90; ergo- 2 + sterol

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Instead, they found that azole-induced reduction of ergosterol increase the activity of cellular mitochondria, the "powerhouse" of the cell, required to produce the cellular "fuel" that drives all metabolic processes in the pathogen cell.

From Science Daily

Together, the teams uncovered the mechanism of the drug: AmB kills fungi by acting like a sponge to extract ergosterol from fungal cells.

From Science Daily

They found that AmBMU’s lower potency wasn’t so much because of a looser binding between it and ergosterol, but the slower pace at which the molecule stripped out the membrane component.

From Science Magazine

Other eukaryotes—organisms with complex cells—produce their own sterols, including stigmasterol in plants and ergosterol in fungi.

From Science Magazine

Further experiments revealed the pathogens were releasing less of a molecule called ergosterol, which made them visible to the ants.

From Science Magazine