2EFW:
reference: An asymmetric structure of the Bacillus subtilis replication terminator protein in complex with DNA., Vivian JP, Porter CJ, Wilce JA, Wilce MC, J Mol Biol. 2007 Jul 13;370(3):481-91. Epub 2007 Mar 2. PMID: 17521668

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