Proteomics is the study of the structure, function, and interactions of proteins in a biological system. It involves the large-scale analysis of proteins in order to understand their roles in cellular processes, as well as how they are altered in response to various stimuli or disease states. Proteomics techniques typically involve the use of mass spectrometry, protein microarrays, and other high-throughput methods to identify and characterize proteins on a global scale. This area of research is critical for understanding the complex molecular mechanisms underlying biological processes and for identifying potential therapeutic targets for various diseases.