3HYJ:
reference: The structure of a bacterial DUF199/WhiA protein: domestication of an invasive endonuclease., Kaiser BK, Clifton MC, Shen BW, Stoddard BL, Structure. 2009 Oct 14;17(10):1368-76. PMID: 19836336

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