Sample conformations of

<p><b> and </b><b>.</b> Cartoon representation of sample conformations of (a) and (b) . Purple, blue, cyan, and orange represent -helix, -helix, turn, and coil secondary structural motifs, respectively. The licorice-like representation of the proline segment of is given in (b). These structures are plotted by VMD <a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1002501#pcbi.1002501-Humphrey1" target="_blank">[61]</a> using STRIDE <a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1002501#pcbi.1002501-Frishman1" target="_blank">[60]</a> for secondary structure prediction.