Specifically, it's the rough endoplasmic reticulum (RER) that is responsible for protein synthesis. The RER is studded with ribosomes, which are the sites of protein synthesis.
Here's a breakdown:
* Endoplasmic reticulum (ER): A network of interconnected membranes that extends throughout the cytoplasm of eukaryotic cells.
* Rough endoplasmic reticulum (RER): A region of the ER that has ribosomes attached to its surface. These ribosomes synthesize proteins that are then transported into the lumen (the space inside) of the RER for further processing and modification.
So, while the ER as a whole plays a role in various cellular functions, the RER is specifically dedicated to making proteins.
