Proline

Proline is an amino acid, a building block of proteins found in all living organisms. It is unique because its structure forms a ring that links back to its amino group, making it more rigid than other amino acids. This rigidity helps shape the three-dimensional structure of proteins, especially in areas like connective tissues and enzymes. Proline also contributes to the stability and flexibility of proteins, influencing how they fold and function. It plays essential roles in biological processes, including wound healing and maintaining cellular integrity.