L-proline is a non-essential amino acid and one of the main components of collagen, the most abundant structural protein in the human body.
Even though L-proline is a non-essential amino acid, which means it may be synthesized in the human body, it is nevertheless important as a structural component of collagen, a protein that comprises 90% of human connective tissue. Collagen is present in skin, tendons, ligaments, cartilage, joints and bone as well as blood vessels, arteries, veins and lymph vessels. Collagen is also needed for the repair of blood vessels, bruises and broken bones.
L-proline, because of its role in protein synthesis is commonly consumed as a dietary supplement by weightlifters and performance athletes in workout routines.
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