What is the role of the rough endoplasmic reticulum in a cell?

Cells specialising in the production of proteins will tend to have a larger amount of rough ER whilst cells producing lipids (fats) and steroid hormones will have a greater amount of smooth ER ... Many of the proteins are produced in quantity in the cells of the pancreas and the digestive tract and function as digestive enzymes. read more

in cell (biology): The rough endoplasmic reticulum. The RER is generally a series of connected flattened sacs. It plays a central role in the synthesis and export of proteins and glycoproteins and is best studied in the secretory cells specialized in these functions. read more

The endoplasmic reticulum is a membrane-bound structure that is a part of every eukaryotic cell. This organelle plays a large role in the synthesis of large, complex proteins and amino acids. The membranes of an endoplasmic reticulum is lined with ribosomes. read more

rough endoplasmic reticulum This is an extensive organelle composed of greatly convoluted but flattish sealed sacs, which are contiguous with the nuclear membrane. It is called ‘rough’ endoplasmic reticulum because it is studded on its outer surface (the surface in contact with the cytosol) with ribosomes. read more