| 4HU7: reference: (4R)- and (4S)-Fluoroproline in the Conserved cis-Prolyl Peptide Bond of the Thioredoxin Fold: Tertiary Structure Context Dictates Ring Puckering., Rubini M, Scharer MA, Capitani G, Glockshuber R, Chembiochem. 2013 Jun 17;14(9):1053-7. doi: 10.1002/cbic.201300178. Epub 2013 May, 27. PMID: 23712956 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).