Quaternary structure

• when do quaternary structures occur

  • when more than one polypeptide chain (each with a tertiary structure)
  • combine to form a larger protein complex
• what are quaternary proteins sometimes associated with

  • non-protein groups
  • called prosthetic groups
• what else are non-protein groups called

  prosthetic groups
• what are the bonds that quaternary groups have

  • same as tertiary
  • hydrogen bonds
  • ionic bonds
  • hydrophilic interactions
  • hydrophobic interactions
  • disulphide bridges