Amino acids (amino acid) contain atoms of carbon, hydrogen, oxygen and nitrogen addition, some products may contain atoms of other elements such as phosphorus, iron and sulfur are tons of amino acids, each kind can be compatible with the bond Cowell. Agilent has a unique name that bound peptides (peptide bond) structure, which is composed of amino acids of a linear line, called peptides, Peptide bond is the bond Cowell Talent occurred between. among the carboxylic C atom of the amino acids.