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Which best describes the tertiary structure of a protein?

AThe interaction of polypeptide subunits and prosthetic groups
BInteractions forming hydrogen bonds between the amino acids
CThe sequence of amino acids in the polypeptide chain
DThe structure formed from interactions between the amino acid side groups

Verified Answer :

mooncrawler45

C. is the correct answer -  The sequence of amino acids in the polypeptide chain

Amino acids are subunits of proteins, they are the monomer ( building blocks)  of proteins also called polypeptides. Each protein has a unique set of amino acids chain that make them distinctive.

genewho

The structure formed from interactions between the amino acid side groups is the best statement that describes the tertiary structure of a protein.

The tertiary structure of a protein is the set of angles, contacts and conformations of all the atoms of a polypeptide chain that give rise to the folding of said polypeptide.

The forces that stabilize these contacts are mainly the contacts between the side chains of the amino acids but occasionally hydrogen bonds of the polypeptide chain can participate.

In the tertiary structure of a protein, the relevant contacts are those that are established between amino acids that are widely separated in the sequence, but that are close to each other as a result of the plegameint.

The tertiary structure of a protein is directly responsible for its biological properties, since the spatial arrangement of the different functional groups determines their interaction with the various ligands.

We can conclude that the tertiary structure, therefore, is the way in which the polypeptide chain folds in space, that is, how a certain protein is wound.

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