Amino refers to a type of organic compound that contains an amino group, which is made up of a nitrogen atom bonded to two hydrogen atoms. Amino groups are essential components of amino acids, the building blocks of proteins. Proteins play a crucial role in various biological processes, including cell structure, function, and regulation. In the context of nutrition, amino acids are classified into two categories: essential and non-essential. Essential amino acids, such as lysine and tryptophan, must be obtained through diet, while non-essential amino acids can be synthesized by the body. Together, these amino acids contribute to overall health and well-being.