| 1IUM: reference: First evidence for phototropin-related blue-light receptors in prokaryotes., Losi A, Polverini E, Quest B, Gartner W, Biophys J. 2002 May;82(5):2627-34. PMID: 11964249 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).