1DHP:
reference: The crystal structure of dihydrodipicolinate synthase from Escherichia coli at 2.5 A resolution., Mirwaldt C, Korndorfer I, Huber R, J Mol Biol 1995 Feb 10;246(1):227-39. PMID: 7853400

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