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Keyword - Microsome (KW-0492)

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Protein found in microsomes, a heterogenous set of vesicles 20-200 nm in diameter and formed from the endoplasmic reticulum when cells are disrupted. The vesicles are isolated by differential centrifugation and are composed of three structural features: rough vesicles, smooth vesicles and ribosomes. Numerous enzyme activities are associated with the microsomal fraction.


Cellular component

Gene Ontology


intracellular membrane-bounded organelle [ GO:0043231 ]


Endoplasmic reticulumMicrosomeCellular component
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Main funding by: National Institutes of Health

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