1KQP:
reference: NH3-dependent NAD+ synthetase from Bacillus subtilis at 1 A resolution., Symersky J, Devedjiev Y, Moore K, Brouillette C, DeLucas L, Acta Crystallogr D Biol Crystallogr 2002 Jul;58(Pt 7):1138-46. PMID: 12077433

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