| 4CH3: reference: Structural basis for the site-specific incorporation of lysine derivatives into proteins., Flugel V, Vrabel M, Schneider S, PLoS One. 2014 Apr 23;9(4):e96198. doi: 10.1371/journal.pone.0096198. eCollection, 2014. PMID: 24760130 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).