The sequence of amino acids that is produced when the gene is translated forms the primary structure of protein and is wholly dependent on the information that is copied from DNA and onto messenger RNA (mRNA).
In the nucleus of the cell, information for synthesis of a particular protein is copied (transcribed) from DNA and onto mRNA.
mRNA then leaves the nucleus with this information and enters the cytoplasm where it attaches to a ribosome . Transfer RNA (tRNA) read (translates) this information and fetches the corresponding amino acids from the pool of free amino acids in the cytoplasm. It brings them to the ribosome where they are linked together into a chain or polymer, which forms the primary structure of the protein.
