1EDT:
reference: Crystal structure of endo-beta-N-acetylglucosaminidase H at 1.9 A resolution: active-site geometry and substrate recognition., Rao V, Guan C, Van Roey P, Structure 1995 May 15;3(5):449-57. PMID: 7663942

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