Proline is an amino acid found in high amounts in collagen and the peptide gluten. The collagen superfamily is highly complex and shows a remarkable diversity in molecular and supramolecular organization, tissue distribution and function. However, all its members share a common structural feature, the presence of at least one triple-helical domain, which corresponds to a number of (Gly-X-Y)n repeats (X being frequently proline and Y hydroxyproline) in the amino acid sequence. If you are interested in the latest research on natural supplements and amino acids, consider subscribing to a free natural medicine Newsletter sent by email.

Proline Metabolism
In mammals, L-arginine is classified as a semiessential or conditionally essential amino acid, depending on the developmental stage and health status of the individual. It can be derived from proline or glutamate, with the ultimate synthetic step catalyzed by argininosuccinate lyase.

Proline emails
Q. What are the effects of taking a proline supplement?
   A. I don't know. I have not yet taken a proline capsule by itself to see what it does.

L ornithine is an amino Acid used by the body to make arginine, proline, and polyamines.