Amino acid metabolism is the process by which the body breaks down and synthesizes amino acids, the building blocks of proteins. It plays a crucial role in various physiological functions such as protein synthesis, energy production, and the regulation of gene expression. Amino acids are either obtained from dietary sources or synthesized within the body, and their metabolism is tightly regulated to maintain the balance of amino acids in the body. Disruptions in amino acid metabolism can lead to various health conditions, such as metabolic disorders or deficiencies in essential amino acids. Research in this area aims to understand the underlying mechanisms of amino acid metabolism and its implications for human health and disease.