Describe the structure of proteins (4 hierarchical levels) with the help of diagrams.

Proteins are essential macromolecules that play a crucial role in the structure, function, and regulation of cells, tissues, and organs. They are composed of long chains of amino acids that fold into specific three-dimensional shapes, enabling them to perform their diverse biological functions. The structure of proteins is described at four hierarchical levels: primary, secondary, tertiary, and quaternary.

Primary Structure:

The primary structure of a protein refers to the sequence of amino acids in a polypeptide chain. Amino acids are linked by peptide bonds, forming a linear sequence. The order of amino acids in the polypeptide chain is determined by the genetic code in the DNA. This sequence dictates the protein’s overall structure and function. Each amino ______ ___ ______ _________ ____ _____ _________ _______ ________ __________ ____.
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