Electronics, Appliances, Jewelry Protection More than 60 million customers worldwide rely on us to protect their electronics, appliances and jewelry and other major purchases. Backed by an extensive network of service providers, we help keep your life running smoothly when things go wrong.
Ribosomes consist of two major subunitsâthe small ribosomal subunit reads the mRNA, while the large subunit joins amino acids to form a polypeptide chain. Each subunit is composed of one or more ribosomal RNA (rRNA) molecules and a variety of proteins.
The S in the subunit names is a unit of measure and stands for the Svedberg unit. Protein Synthesis. The main job of the ribosome is to make proteins for the cell. There can be hundreds of proteins that need to be made for the cell, so the ribosome needs specific instructions on how to make each protein.These instructions come from the nucleus in the form of messenger RNA. Small subunit-The small subunit really isn't that small, just a bit smaller than the large subunit. 2  It is responsible for the flow of information during protein synthesis. 3  It is called the 40S in eukaryotic cells and the 50S in prokaryotic cells.