| 4TWZ: reference: Loop L1 governs the DNA-binding specificity and order for RecA-catalyzed reactions in homologous recombination and DNA repair., Shinohara T, Ikawa S, Iwasaki W, Hiraki T, Hikima T, Mikawa T, Arai N, Kamiya N, Shibata T, Nucleic Acids Res. 2015 Jan;43(2):973-86. doi: 10.1093/nar/gku1364. Epub 2015 Jan, 5. PMID: 25561575 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).