Amino acids – classification and properties, essential amino acids

Amino acids – classification and properties, essential amino acids
 
  • The word "Protein" was coined by J.J. Berzelius in 1838 and was derived from the Greek word "Proteios" meaning the ‘first rank’ . Proteins are macromolecular polymers composed of amino acids as the basic unit linked by peptide bonds . Amino acids are the fundamental structural units of all proteins .These biopolymers contain carbon, hydrogen, oxygen, nitrogen and sulphur . The elementary composition of most proteins is very similar; approximate percentages are C=50-55, H=6-8, O=20-23, N=15-18 and S=Traces


Last modified: Tuesday, 27 March 2012, 9:15 PM