1WZU:
reference: Crystal structure of the NAD biosynthetic enzyme quinolinate synthase., Sakuraba H, Tsuge H, Yoneda K, Katunuma N, Ohshima T, J Biol Chem 2005 Jun 3;. PMID: 15937336

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