Proline

Proline is an imino acid. It has a molecular weight of 115.13 and its molecular formula is C₅H₉NO₂. It is also classified as a hydrophobic amino acid.

Proline has an aliphatic side chain, which is bonded to the nitrogen atom and the alpha-carbon atom. It influences protein architecture, because it's structure makes it more conformationally restricted than other amino acids ^[1].

References

1. ↑ Biochemistry 6th ed. 2006, J.Berg et al.