What type of protein is C-reactive protein?

C-reactive protein (CRP) is classified as an acute phase protein that is produced by the liver in response to inflammation. Its levels in the bloodstream increase significantly during inflammatory states, infections, and tissue injuries, serving as a biomarker for various inflammatory conditions. This characteristic of CRP makes its measurement valuable in clinical settings for diagnosing and monitoring diseases associated with inflammation.

In contrast, structural proteins are primarily involved in providing support and shape to cells and tissues, such as collagen and keratin. Transport proteins, like hemoglobin and transferrin, are responsible for carrying substances throughout the body. Storage proteins, such as ferritin and casein, store essential nutrients or molecules for later use. These categories emphasize the specific roles that proteins play in biological systems, highlighting why CRP is uniquely important as an acute phase protein in inflammatory responses.