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TERTIARY STRUCTURE OF PROTEINS

  1. The three-dimensional arrangement of protein structure is referred to as tertiary structure.
  2. The polypeptide chain may undergo folding and coiling to produce the tertiary structure of proteins.
  3. The structural folds have an important bearing of the properties of proteins.
  4. The tertiary structure of a protein brings together active amino acids which are otherwise scattered along the chain.
  5. The tertiary structure of proteins is maintained by several types of bonds such as hydrogen bonds, ionic bonds, Vander Wall’s interactions, disulphide bonds and hydrophobic bonds. 
  6. This type of arrangement ensures stability of the molecule.
  7. Example: Myoglobin
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