The structure of a polypeptide that is characterized by a three dimensional shape with a characteristic geometry at local regions maintained by hydrogen bonds is
A)primary structure.
B)secondary structure.
C)tertiary structure.
D)quaternary structure.
E)both tertiary and quaternary structures.

Question

Quizplus · Accepted Answer

The three-dimensional shape with characteristic geometry at local regions that is maintained by hydrogen bonds is the hallmark of secondary structure. This structure is formed due to the folding of amino acid chains into local helices (e.g. alpha-helices) or sheets (e.g. beta-sheets) that are stabilized by hydrogen bonds.

The Structure of a Polypeptide That Is Characterized by a Three