Update publication information. Proteomics is a science that studies the composition of proteins in cells, tissues or organisms and their changing laws, taking the proteome as the research object. Proteomics essentially refers to the study of protein characteristics at a large-scale level, including protein expression levels, post-translational modifications, protein-protein interactions, etc., thereby obtaining information on disease occurrence, cell metabolism, etc. at the protein level. A holistic and comprehensive understanding of the process.