treónín

Threonine is an essential amino acid, meaning the human body cannot synthesize it and must obtain it through diet. Its chemical name is (2S,3R)-2-amino-3-hydroxybutanoic acid, and it is one of the twenty standard amino acids that make up proteins. Threonine possesses a chiral center, leading to different stereoisomers, but only L-threonine is found in proteins. Its side chain contains a hydroxyl group, making it a polar amino acid.

Threonine plays a crucial role in protein synthesis and function. It is a component of collagen, a structural protein vital for connective tissues, skin, and bones. Threonine is also involved in the metabolism of fats and the synthesis of other amino acids, such as glycine and serine. Furthermore, it is a precursor for the production of important biomolecules like phospholipids and glycine derivatives.

Dietary sources of threonine include a variety of protein-rich foods such as meat, poultry, fish, eggs, dairy products, legumes, nuts, and seeds. Deficiencies in threonine are rare in individuals with a balanced diet but can occur in cases of malnutrition or malabsorption disorders. Symptoms of threonine deficiency can include fatigue, mood disturbances, and impaired immune function. The recommended daily intake of threonine varies based on age and physiological status.