microsome

enUK

mi·cro·some

M0277100 (mī′krə-sōm′)n. A small particle in the cytoplasm of a cell, typically consisting of fragmented endoplasmic reticulum to which ribosomes are attached.

mi′cro·so′mal (-sō′məl), mi′cro·so′mic (-sō′mĭk) adj.

microsome

(ˈmaɪkrəʊˌsəʊm) n (Biology) any of the small particles consisting of ribosomes and fragments of attached endoplasmic reticulum that can be isolated from cells by centrifugal action ˌmicroˈsomal adj

mi•cro•some

(ˈmaɪ krəˌsoʊm)

n. a small vesicle containing fragments of ribosomes and other organelles, formed during cell breakage by centrifugation. [1880–85] mi`cro•so′mal, adj.

Thesaurus

Noun

microsome - a tiny granule in the cytoplasm that is where protein synthesis takes place under the direction of mRNAcytol, cytoplasm - the protoplasm of a cell excluding the nucleus; is full of proteins that control cell metabolismgranule - a tiny grain

Translations

Microsome

microsome

[′mī·krə‚sōm] (cell and molecular biology) A fragment of the endoplasmic reticulum. A minute granule of protoplasm.

Microsome

a fragment in the endoplasmic network (bubbles about 1,000 angstroms diameter), formed when cells are destroyed during the homogenization of animal and plant tissues. The microsome fraction of the homogenate is isolated by differential centrifugation. There are two types of microsomes: smooth-surfaced and rough-surfaced (as a result of the distribution of ribosomes on the latter). Before the technique of separating cellular homogenates was perfected, the microsome fraction also included mitochondria.

microsome

[mi´kro-sōm] any of the vesicular fragments of endoplasmic reticulum produced during disruption and centrifugation of cells. adj., adj microso´mal.

mi·cro·some

(mī'krō-sōm), One of the small spheric vesicles derived from the endoplasmic reticulum after disruption of cells and ultracentrifugation. [micro- + G. sōma, body]

microsome

Any of a heterogeneous group of variably sized and shaped, closed lipoprotein-rich vesicles, which are formed from ruptured endoplasmic reticulum and large polyribosomes when a cell is ultracentrifuged at 100,000 g for 60 minutes.

mi·cro·some

(mī'krō-sōm) One of the small spheric vesicles derived from the endoplasmic reticulum after disruption of cells and ultracentrifugation. [micro- + G. sōma, body]

microsome

see MICROSOMAL FRACTION.

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Words related to microsome

noun a tiny granule in the cytoplasm that is where protein synthesis takes place under the direction of mRNA

Related Words