The 1665â66 epidemic was on a far smaller scale than the earlier Black Death pandemic; it was remembered afterwards as the great plague mainly because it was the last widespread outbreak of bubonic plague in England during the 400-year timespan of the Second Pandemic.
Proteins can also be very important in communication in the body â insulin, for example, is a protein. In fact, if you take away the water, 75% of our bodies are protein. All of these proteins require the right amino acids found in our bodies and our diets to be made. Can't make amino acids.
Amino acids play central roles both as building blocks of proteins and as intermediates in metabolism. The 20 amino acids that are found within proteins convey a vast array of chemical versatility. The precise amino acid content, and the sequence of those amino acids, of a specific protein, is determined by the sequence of the bases in the gene that encodes that protein.