2Y6X:
reference: Crystal structure of the Psb27 assembly factor at 1.6 A: implications for binding to Photosystem II., Michoux F, Takasaka K, Boehm M, Komenda J, Nixon PJ, Murray JW, Photosynth Res. 2011 Dec 23. PMID: 22193820

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