Question
Explain how alterations in protein secondary or tertiary structure can lead to loss of biological activity.
Answer :
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Proteins derive their biological activity from their specific three-dimensional conformations, which are determined by their primary sequence and stabilized through secondary and tertiary structural interactions. The secondary structure, consisting mainly of alpha-helices and beta-pleated sheets, is stabilized by hydrogen bonds between backbone atoms. The tertiary structure represents the overall three-dimensional folding of a single polypeptide chain, maintained by interactions such as hydrogen bonds, ionic interactions, hydrophobic interactions, and disulfide bridges. Any alteration in these structural levels can disrupt the precise spatial arrangement required
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