The primary structure of a protein refers to its
A) ability to form intrachain hydrogen bonds.
B) amino acid sequence.
C) folding induced by disulfide linkages.
D) ability to form subunit structures.
E) ability to form interchain hydrogen bonds.

Question

Quizplus · Accepted Answer

The primary structure of a protein refers to the sequence of amino acids that make up the polypeptide chain. It is the first level of protein structure and determines the overall folding and function of the protein.

The other choices are incorrect as they refer to other levels of protein structure or do not accurately describe the primary structure. For example, intrachain and interchain hydrogen bonds refer to secondary and tertiary structures, while subunit structures refer to quaternary structure. The formation of disulfide linkages can contribute to protein folding, but it is not specific to the primary structure.

The Primary Structure of a Protein Refers to Its