Your body contains tens of thousands of different proteins, each with a specific structure and function. The unique three-dimensional shape of each of these diverse proteins is based on several superimposed levels of structure. Which if the following is an accurate statement about proteins?
The primary structure of a protein is the order of amino acids in a polypeptide, as coded for by the DNA of a gene.



Answer :

Proteins are complex molecules that are essential for the functioning of all living organisms. They are composed of amino acids which vary in sequence, size, and shape. The structure of a protein is based on several different levels of organization, from the most basic primary structure to the most complex quaternary structure.

The primary structure of a protein is the specific sequence of amino acids linked together by peptide bonds to form a polypeptide chain. This sequence is determined by the DNA of a gene, which codes for the order of the amino acids. The secondary structure of a protein is made up of hydrogen bonds that form between the peptide backbone of the polypeptide chain. It consists of regular repeating patterns of structure, such as the alpha helix and the beta pleated sheet.

The tertiary structure of a protein is the three-dimensional shape of the polypeptide chain, which is determined by the folding and interactions of the secondary structure elements. The quaternary structure of a protein is the arrangement of two or more polypeptide chains that interact with each other. This structure is determined by the interactions between the tertiary structures of the individual polypeptide chains.

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