1XNF:
reference: The crystal structure of NlpI. A prokaryotic tetratricopeptide repeat protein with a globular fold., Wilson CG, Kajander T, Regan L, FEBS J 2005 Jan;272(1):166-79. PMID: 15634341

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