What is protein assays?

Protein assays are analytical procedures used to quantitatively or qualitatively detect and measure the presence, amount, or activity of proteins in a sample. They are fundamental tools in biochemistry, molecular biology, and drug discovery. Common uses include determining protein concentration, assessing protein purity, studying protein-protein interactions, monitoring protein expression levels, and evaluating the effects of drugs or other treatments on protein activity. Various types of protein assays exist, including colorimetric assays (e.g., Bradford, Lowry, BCA), immunoassays (e.g., ELISA, Western blotting), and activity assays.