| 1RRX: reference: Crystallographic evidence for isomeric chromophores in 3-fluorotyrosyl-green fluorescent protein., Bae JH, Paramita Pal P, Moroder L, Huber R, Budisa N, Chembiochem 2004 May 3;5(5):720-2. PMID: 15122645 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).