A ribosome is a ribonucleoprotein particle found in all cells, both prokaryotic and eukaryotic, responsible for the synthesis of proteins. A ribosome functions as a molecular machine in the translation of strands of messenger RNA (mRNA) and production of a protein. A ribosome links amino acids together in the order specified by the codons of mRNA molecules to form polypeptide chains. A ribosome is made up of a large and a small subunit, each consisting of one or more ribosomal RNA molecules and many ribosomal proteins. The ribosomes and associated molecules are also known as the translational apparatus.
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