
Amino acids are the building blocks of life, essential nutrients for the human body, and the fundamental components of proteins. More than 40 amino acids are important in humans, including 10 essential amino acids, more than 20 proteinogenic amino acids, and several amino acids with important physiological functions, collectively referred to as the amino acid profile. The complete amino acid profile covers the key components of amino acid metabolic pathways. Human health and disease are directly or indirectly associated with amino acid metabolism.
