All a-amino acids have trivial names, which
usually reflect the property of that compound or
its source Glycine is so named since it has sweet taste (in Greek glykos
means sweet) and tyrosine was first obtained from cheese (in Greek, tyros
means cheese ) Amino acids are generally represented by a three letter
symbol, sometimes one letter symbol is also used Structures of some
commonly occurring amino acids along with their 3-letter and 1-letter
symbols are given in Table 10