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Quaternary structure of protein is_____________?
  • (A)  The arrangement sequence of amino acids in the polypeptide chain
  • (B)  Inter relation between amino acids in a single polypeptide chain
  • (C)  Inter relation of amino acids in 2 polypeptide chains
  • (D)  The inter relation and arrangement of polypeptides in a protein with more than 2 polypeptide chains