2GAJ: Structure Of Full Length Topoisomerase I From Thermotoga Mar Monoclinic Crystal Form
reference: Crystal Structure of Full Length Topoisomerase I from Thermotoga maritima., Hansen G, Harrenga A, Wieland B, Schomburg D, Reinemer P, J Mol Biol. 2006 May 19;358(5):1328-40. Epub 2006 Mar 23. PMID: 16600296

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