| 2MDU: reference: Circular Permutation of a WW Domain: Folding Still Occurs after Excising the Turn of the Folding-Nucleating Hairpin., Kier BL, Anderson JM, Andersen NH, J Am Chem Soc. 2014 Jan 3. PMID: 24350581 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).