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rough endoplasmic reticulum (GO:0005791)
The rough (or granular) endoplasmic reticulum (ER) has ribosomes adhering to the outer surface; the ribosomes are the site of translation of the mRNA for those proteins which are either to be retained within the cisternae (ER-resident proteins , the proteins of the lysosomes, or the proteins destined for export from the cell. Glycoproteins undergo their initial glycosylation within the cisternae.
Related
protein Red (Protein RER, IK factor, cytokine IK, IK, RED, RER)
General
endoplasmic reticulum (GO:0005783)
References
gene ontology: GO:0005791