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Turns

The polypeptide chain can make very sharp changes in direction using as few as four residues by means of hydrogen bond stabilised $\beta $-turns. These secondary structures often have specific amino acid preferences[Hutchinson & Thornton, 1994] and commonly contain proline and/or glycine residues.


Copyright Bob MacCallum - DISCLAIMER: this was written in 1997 and may contain out-of-date information.