The main organelle involved in modification and routing of newly...

The main organelle involved in modification and routing of newly synthesized proteins to their destinations is endoplasmic reticulum. The endoplasmic reticulum serves many general functions, including the folding of protein molecules in sacs called cisternae and the transport of synthesized proteins in vesicles to the Golgi apparatus. Correct folding of newly made proteins is made possible by several endoplasmic reticulum chaperone proteins.