1DOP:
reference: A model for the photosystem II reaction center core including the structure of the primary donor P680., Svensson B, Etchebest C, Tuffery P, van Kan P, Smith J, Styring S, Biochemistry 1996 Nov 19;35(46):14486-502. PMID: 8931545

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