Threonine is one of the essential amino acids, meaning our bodies cannot produce it naturally and must obtain it through our diet. It serves as a building block for proteins and is involved in various physiological processes, including skin health. Threonine plays a vital role in collagen synthesis, contributing to the maintenance and repair of our skin tissues. Furthermore, threonine is a precursor for the production of glycine and serine, two amino acids that are essential for the synthesis of phospholipids. These phospholipids are crucial components of our skin cell membranes, helping to maintain their integrity and protect against external stressors. [18]
Jiravanichanun, N., et al., Threonine in Collagen Triple-helical Structure. Polymer Journal, 2006. 38(4): p. 400-403.