The structure of proteins is defined by four levels of protein organization. These are the primary, secondary, tertiary, and quaternary structures. Starting from the primary structure, the properties and interactions in each component stack one level after another, eventually leading to the functional protein structure.
The primary structure of proteins pertains to the unique amino acid sequence of the polypeptide chain from the N-terminus up to the C-terminus. This sequence defines the possible interactions that can be formed within the polymer.
Briefly describe the four levels of protein structure.
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