2PFE:
reference: Mesophile versus Thermophile: Insights Into the Structural Mechanisms of Kinetic Stability., Kelch BA, Agard DA, J Mol Biol. 2007 Jul 20;370(4):784-95. Epub 2007 May 10. PMID: 17543987

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