When a Protein Is Denatured Why Does It Lose Functionality?

When a protein is denatured, secondary and tertiary structures are altered but the peptide bonds of the primary structure between the amino acids are left intact. Since all structural levels of the protein determine its function, the protein can no longer perform its function once it has been denatured.

Why does a denatured protein no longer function?

Because many of the proteins original bonds have been broken, those parts of the molecule are now available to make new bonds with other substances. This changes the way the molecule reacts. Since a protein's function is dependent on its shape, a denatured protein is no longer functional.

What happens when protein is denatured?

Denaturation involves the breaking of many of the weak linkages, or bonds (e.g., hydrogen bonds), within a protein molecule that are responsible for the highly ordered structure of the protein in its natural (native) state. Denatured proteins have a looser, more random structure; most are insoluble.

Marcus Vance

Marcus Vance

Cybersecurity & Digital Privacy Researcher

Marcus Vance is a cybersecurity auditor and technology writer dedicated to educating the public about online safety, data privacy regulations, enterprise security, and emerging cyber threats.