Polypeptides are chains of amino acids. Proteins are made up of one or more polypeptide molecules.
A polypeptide is a long, continuous, and unbranched peptide. Proteins consist of one or more polypeptides arranged in a biologically functional way and are often bound to cofactors, or other proteins.
The utilisation of peptide synthesis technology in solving health problems of worldwide importance was mainly dictated by the desire to obtain stable products devoid of the various contaminants often seen in recombinant material (glycosylation variants, proteases, DNA, endotoxins) in record time and in reasonable quantities to perform preclinical testing.