Proteins

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  • Proteins
    • Peptide bond
      • .                  .         .                   .     .                  .        .                  .
    • Condensation reaction
    • Secondary structure
      • a helix
      • B pleated sheet
      • H bonds
        • C=O----H-N
    • Tertiary structure
      • 3D shape
        • Disulphide bridges
        • H bonds
        • Ionic bonds
        • Hydrophobic/ hydrophilic interaction
    • Quaternary structure
      • More than on chain e.g. Haemoglobin
        • Weak Van Der Waals forces
    • Globular
      • Enzyme- specific shape (active site)
    • Fibrous
      • Strength
        • Tendons- collagen
    • Amino acid sequence (26 types)
      • Different sequence- different acid.

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