2OGR:
reference: [Three-dimensional structure of yellow fluorescent protein zYFP538 from Zoanthus sp. at the resolution 1.8 angstrom], Pletneva NV, Pletnev SV, Chudakov DM, Tikhonova TV, Popov VO, Martynov VI, Wlodawer A, Dauter Z, Pletnev VZ, Bioorg Khim. 2007 Jul-Aug;33(4):421-30. PMID: 17886433

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).