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GO:0005576
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CC
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extracellular region
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A location, relative to cellular compartments and structures, occupied by a macromolecular machine when it carries out a molecular function. There are two ways in which the gene ontology describes locations of gene products: (1) relative to cellular struc
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GO:0005783
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CC
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endoplasmic reticulum
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The irregular network of unit membranes, visible only by electron microscopy, that occurs in the cytoplasm of many eukaryotic cells. The membranes form a complex meshwork of tubular channels, which are often expanded into slitlike cavities called cisterna
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GO:0005829
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CC
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cytosol
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The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
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GO:0008171
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MF
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O-methyltransferase activity
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Catalysis of the transfer of a methyl group to the oxygen atom of an acceptor molecule.
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GO:0008276
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MF
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protein methyltransferase activity
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Catalysis of the transfer of a methyl group (CH3-) to a protein.
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