1XL9:
reference: Crystal structure of dihydrodipicolinate synthase (BA3935) from Bacillus anthracis at 1.94 A resolution., Blagova E, Levdikov V, Milioti N, Fogg MJ, Kalliomaa AK, Brannigan JA, Wilson KS, Wilkinson AJ, Proteins. 2006 Jan 1;62(1):297-301. PMID: 16287120

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