2OJK:
reference: Refined crystal structures of red and green fluorescent proteins from the button polyp Zoanthus., Pletneva N, Pletnev V, Tikhonova T, Pakhomov AA, Popov V, Martynov VI, Wlodawer A, Dauter Z, Pletnev S, Acta Crystallogr D Biol Crystallogr. 2007 Oct;63(Pt 10):1082-93. Epub 2007, Sep 19. PMID: 17881826

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