Protiens are polymers of amino acids joined by peptide
bonds (proteins are therefore also known as polypeptides).
The number and order of the amino acids contained
in a particular protein are prescribed by theDNAsequence
of that protein’s gene. The mechanism by which a genetic
message is translated from its nucleic acid form to
its polypeptide product is protein synthesis. Translation
occurs at the ribosome, an RNA–protein complex often
called the protein factory of the cell.