Bonds present in various protein structures



1. Primary structure

Peptide bonds



2. Secondary Structure



Alpha helix -

Peptide bonds, Intramolecular hydrogen bonds



Beta pleated -

Peptide bonds, Intermolecular hydrogen bonds



Collagen helix -

Peptide bonds, Locking effect via proline and hydroxyproline



3. Tertiary Structure

Peptide bonds, Hydrogen bonds, Disulphide bonds, Ionic bonds, Hydrophobic interactions, Van der Waal Forces



4. Quaternary Structure

Peptide bonds, Hydrogen bonds, Hydrophobic interactions, Ionic bonds