1T4G:
reference: Crystal structure of archaeal recombinase RADA; a snapshot of its extended conformation., Wu Y, He Y, Moya IA, Qian X, Luo Y, Mol Cell 2004 Aug 13;15(3):423-35. PMID: 15304222

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