proteins

• Globular proteins = compact, water soluble and usually roughly spherical.
• Conjugated proteins= globular proteins that contain a non-protein component called a prosthetic group
• Fibrous proteins= formed from long, insoluble molecules
• Examples of fibrous proteins: Collagen, keratin, elastin
• Tertiary structure:

  • hydrophobic and hydrophilic interactions
  • hydrogen bonds
  • ionic bonds
  • disulfide bonds
• Secondary structure= hydrogen bonds
• Primary structure= peptide bonds
• Quaternary structure= same interactions as tertiary but they are between different protein molecules rather than within one molecule