Endoplasmic Reticulum

The endoplasmic reticulum is a eukaryotic organelle with many functions. The outer surface of the structure is often coated with ribosomes undergoing protein synthesis. Proteins to be processed in other ways, such as addition of sugars, are synthesized and transported into the endoplasmic reticulum. Many biological reactions on nonpolar lipid molecules occur in the endoplasmic reticulum.

See also: Figure 1.13, Protein Targeting, Programmed Destruction of Proteins, Cholesterol Biosynthesis, Biosynthesis of Glycoconjugates, Cytochrome P-450