1NVI:
reference: Structural studies of molybdopterin synthase provide insights into its catalytic mechanism., Rudolph MJ, Wuebbens MM, Turque O, Rajagopalan KV, Schindelin H, J Biol Chem 2003 Apr 18;278(16):14514-22. PMID: 12571227

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