2UV1:
reference: The Crystal Structure of lambda-Gam Protein Suggests a Model for RecBCD Inhibition., Court R, Cook N, Saikrishnan K, Wigley D, J Mol Biol. 2007 Aug 3;371(1):25-33. Epub 2007 May 18. PMID: 17544443

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