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Late embryogenesis abundant proteins : ウィキペディア英語版
Late embryogenesis abundant proteins
Late Embryogenesis Abundant proteins (LEA proteins) are proteins in animals and plants that protect other proteins from aggregation due to desiccation or osmotic stresses associated with low temperature. LEA proteins were initially discovered accumulating late in embryogenesis of cotton seeds. Although abundant in seeds and pollens, LEA proteins have been found to protect against desiccation, cold, or high salinity in a variety of organisms, including the bacterium ''Deinococcus radiodurans'', nematode ''Caenorhabditis elegans'', ''Artemia'' (Brine shrimp), and rotifers.
LEA proteins function by mechanisms which are distinct from those displayed by heat shock molecular chaperones.〔 Although the causes of LEA protein induction have not yet been determined, conformational changes in transcription factors or integral membrane proteins due to water loss have been suggested. LEA proteins are particularly protective of mitochondrial membranes against dehydration damage.
== See also ==

* Cryptobiosis
* Antifreeze proteins

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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