Question
Briefly describe the primary, secondary, tertiary and quaternary structures of the peptides and proteins.
Answer :
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Proteins and peptides exhibit a hierarchy of structural organization, starting from the primary structure. The primary structure refers to the linear sequence of amino acids linked by peptide bonds, determined by the genetic code. This sequence dictates the overall shape and function of the protein, as even a single change in the amino acid sequence can significantly alter its properties. In the context of solutions, the primary structure remains stable in dilute aqueous solutions, but interactions with solvents can influence its folding tendency. The secondary structure involves the local spatial arrangement of the polypeptide chain, stabilized mainly by hydrogen bonding between the backbone
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