A helical conformation of a polypeptide chain, usually right-handed, with maximal intrachain hydrogen bonding; one of the most common secondary structures in proteins.
There's also pancreatic amylase which breaks down carbohydrates into shorter oligosaccharides, and proteases, like trypsin, which cleaves proteins down into smaller peptides.
This means that their RNA is actually mRNA, and the host cell ribosomes use this mRNA to make a long polyprotein chain, which is then broken into smaller pieces by viral proteases.
Human insulin molecules are stored in clusters of six, thanks to a sticky patch at one end of the peptide – a hydrophobic region that also helps insulin bind to receptors and tell cells to take up glucose.