3GH4:
reference: Molecular Cloning and Crystal Structural Analysis of a Novel beta-N-Acetylhexosaminidase from Paenibacillus sp. TS12 Capable of Degrading Glycosphingolipids., Sumida T, Ishii R, Yanagisawa T, Yokoyama S, Ito M, J Mol Biol. 2009 Jun 12. PMID: 19524595

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