BY1.1 - Proteins

HideShow resource information


  • Always contain cabon, hydrogen, oxygen and nitrogen
  • Sometimes contain sulfur and phosphorus
  • Examples are:
    • Enzymes
    • Amino acids
    • Hormones
    • Carriers
    • Transport Proteins
  • Formed by amino acids

All have the same basic structure:

The Peptide Bond:

  • The amine group of one amino acid reacts with the carboxyl group of another
  • Removes water and forms a peptide bond and a dipeptide
  • Polypeptide: many amino acids joined together 

Protein Structure:

  • Primary Structure:
    • The sequence of amino acids in a polypeptide chain 
  • Secondary Structure:
    • The shape of the peptide chains


No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Biological molecules resources »