And what that does is it increases the stability of the three dimensional structure of Collagen. So Collagen, the most abundant protein in our body, contains proline amino acids that contain hydroxyl groups. These hydroxyl groups, as shown in the following diagram, basically give the Collagen its stability. Now, what happens if we can't produce these hydroxyproline groups? Well, basically, a condition in humans of a disease known as Scurvy is essentially this inability of Collagen to basically produce and modify its own proline molecules in the following way. So, in Scurvy, the body has a deficiency of vitamin C, and vitamin C is needed to basically modify and convert the proline molecules into hydroxyproline.