3QVV:
reference: Directed evolution of sulfotransferases and paraoxonases by ancestral libraries., Alcolombri U, Elias M, Tawfik DS, J Mol Biol. 2011 Aug 26;411(4):837-53. Epub 2011 Jun 24. PMID: 21723874

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