Protein synthesis, including polypeptide synthesis, occurs in the cytoplasm on ribonucleoprotein particles known as ribosomes. Messenger RNA (mRNA), which contains the code to direct the synthesis of one or several polypeptide chains, is synthesized by RNA polymerase on the DNA template and is then transported into the cytoplasm. Once in the cytoplasm, the mRNA becomes bound to the ribosomes...
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