| 2KGB: reference: The effect of the cosolvent trifluoroethanol on a tryptophan side chain orientation in the hydrophobic core of troponin C., Julien O, Mercier P, Crane ML, Sykes BD, Protein Sci. 2009 Jun;18(6):1165-74. PMID: 19472326 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).