The 310-helix is the fourth most common type of secondary structure in proteins after α-helices, β-sheets, and reverse turns (Barlow and Thornton 1988). Approximately 15%–20% of all helices in protein structures are 310-helices, which are commonly found as N- or C-terminal extensions to an α-helix (Barlow and Thornton 1988). 310-Helices in proteins are typically only three to five residues long compared with a mean of 10–12 residues for α-helices (Richardson and Richardson 1988)