proline


proline

One of the nonessential amino acids, found in many proteins, especially collagen. Because the nitrogen atom of its amino group is part of a ring structure (making it a heterocyclic compound), its chemical properties differ from those of the other amino acids in proteins. It is used in biochemical, nutritional, and microbiological research and as a dietary supplement.

This entry comes from Encyclopædia Britannica Concise.
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