Peptide chemistry is a branch of chemistry that focuses on the study of peptides, which are short chains of amino acids linked by peptide bonds. Peptides play a crucial role in a wide range of biological processes, such as enzyme catalysis, hormone activity, and cell signaling. Peptide chemistry involves the synthesis, analysis, and modification of peptides to understand their structure, function, and potential applications in areas such as drug development, biomaterials, and biotechnology. Researchers in this field use a variety of techniques, including solid-phase peptide synthesis, recombinant DNA technology, and mass spectrometry, to investigate the properties and behavior of peptides.