The structure of proteins

The monomers

1. Amino acids
   • Shared features
   • Model rendering
   • Classification and structure
     • Ionisation of amino acids
     • Beta- and gamma-amino acids

First level: sequence

2. Primary structure
   • Peptide bond
   • Peptides and peptide backbone

Second level: conformation

3. Secondary structure
   • Alpha helix
   • Beta pleated sheet
   • Collagen helix
4. Tertiary structure
   • Concept and rendering
   • From primary to tertiary
   • Amphipathy
   • Hydrophobic effect
   • Allosterism

Third level: association

5. Quaternary structure
   • Collagen
   • Haemoglobin
   • Immunoglobulin G