3ZQ5:
reference: Spectroscopy and a high-resolution crystal structure of Tyr263 mutants of cyanobacterial phytochrome Cph1., Mailliet J, Psakis G, Feilke K, Sineshchekov V, Essen LO, Hughes J, J Mol Biol. 2011 Oct 14;413(1):115-27. Epub 2011 Aug 23. PMID: 21888915

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