Microsome
- Microsome
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Les microsomes sont des fragments de membranes du réticulum endoplasmique.
Plus précisément, il s'agit de vésicules provenant de la fragmentation du réticulum endoplasmique.
Il existe deux sortes de microsomes :
- les microsomes rugueux (portant des ribosomes) ;
- les microsomes lisses (sans ribosomes).
Il s'agit également de vésicules provenant de la fragmentation de l'appareil de Golgi et de la membrane plasmique lors d'une centrifugation, on parle alors de fraction microsome.
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microsome — n. (Cell biology) a tiny granule in the cytoplasm of a cell; it consists of ribosomes bound to fragments of the endoplasmic reticulum and mitochondria. [WordNet 1.5 +PJC] … The Collaborative International Dictionary of English
microsome — microsome. См. хромидия. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) … Молекулярная биология и генетика. Толковый словарь.
microsome — [mī′krōsōm΄] n. [ MICRO + SOME3] any of a number of minute granules in the cytoplasm of an active cell, that are filled with enzymes and thought to be associated with protein synthesis microsomal adj … English World dictionary
Microsome — In cell biology, microsomes are vesicle like artifacts re formed from pieces of the endoplasmic reticulum (ER) when eukaryotic cells are broken up in the laboratory; by definition, microsomes are not ordinarily present in living cells.[1]… … Wikipedia
microsome fraction — microsome fraction. См. микросомная фракция. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) … Молекулярная биология и генетика. Толковый словарь.
microsome — noun Etymology: International Scientific Vocabulary Date: 1885 1. any of various minute cellular structures (as a ribosome) 2. a particle in a particulate fraction that is obtained by heavy centrifugation of broken cells and consists of various… … New Collegiate Dictionary
microsome — microsomal, microsomial, microsomic, adj. /muy kreuh sohm /, n. Cell Biol. a small inclusion, consisting of ribosomes and fragments of the endoplasmic reticulum and mitochondria, in the cytoplasm of a cell. [1880 85; MICRO + SOME3] * * * … Universalium
microsome — noun /ˈmaɪk.rə.səʊm,ˈmaɪk.rə.soʊm/ A vesicle formed as an artifact of cell disruption … Wiktionary
microsome — One of the small spherical vesicles derived from the endoplasmic reticulum after disruption of cells and ultracentrifugation. [micro + G. soma, body] * * * mi·cro·some mī krə .sōm n 1) any of various minute cellular structures (as a ribosome) 2)… … Medical dictionary
microsome — n. small granule of protoplasm … English contemporary dictionary
