Now, in the same way that the alpha helix and the beta pleated sheet are stabilized by hydrogen bonds, these abrupt turns are also stabilized by h bonds. And to see what we mean, let's take a look at the following diagram. So, let's suppose we have polypeptide that runs eventually turns in a following direction. So this is, let's say, the nth amino acid in our sequence. This is the n plus one amino acid. This is the n plus two amino acid.