| 4JGE: reference: Structure of the red fluorescent protein from a lancelet (Branchiostoma lanceolatum): a novel GYG chromophore covalently bound to a nearby tyrosine., Pletnev VZ, Pletneva NV, Lukyanov KA, Souslova EA, Fradkov AF, Chudakov DM, Chepurnykh T, Yampolsky IV, Wlodawer A, Dauter Z, Pletnev S, Acta Crystallogr D Biol Crystallogr. 2013 Sep 1;69(Pt 9):1850-60. doi:, 10.1107/S0907444913015424. Epub 2013 Aug 17. PMID: 23999308 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).