Arborwear, LLC 18 years in business 8269 Washington St Chagrin Falls, OH 44023-4507
The Bacterial Ribosome. The bacterial ribosome is a cytoplasmic nucleoprotein particle whose main function is to serve as the site of mRNA translation and protein synthesis. The ribosome has a mass of about 2.5 MDa, with RNA accounting for 2/3 of the mass.It consists of two subunits denoted 30S (small subunit) and 50S (large).uring protein synthesis a ribosome moves along an mRNA molecule, reading the codon and adding the correct amino acid (from the corresponding aminoacyl tRNA) to the growing protein. When a stop codon is reached,translation ceases, and the mRNA and protein are released.
Ribosomes are composed of a large subunit and a small subunit. When these two subunits combine, they form a complete ribosome that is capable of converting genetic code found in RNA into a sequence of amino acids. The ending result is a protein structure. Under a microscope, ribosomes appear to be tiny bead-like structures. These are present in all living cells, including prokaryotes and eukaryotes. These can function in two ways. First, ribosomes can float freely within the cell's cytoplasm. Otherwise, ribosomes can also be attached to a cell structure that is known as the endoplasmic reticulum. As the cell's protein factories, ribosomes locate and combine disparate amino acids using peptide bonds in order to create more complex polypeptide structures (proteins).