The rough ER take part in some protein production, it also is involved in protein folding, quality control and dispatch. It is often referred as the manufacturing and packaging system!The Rough ER works with the Smooth ER! In fact, although they appear to be different they are sub-compartments of the same organelle! They both work to make proteins. The Rough ER's membranes are composed of lipids.The surface of rough endoplasmic reticulum is spotted with organelles called ribosomes.
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The rough ER is found all around the cell, but it's denser near the nucleus and the Golgi apparatus.
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